Page 3 of 3 FirstFirst 1 2 3
Results 41 to 56 of 56

Thread: SATA Controllers

  1. #41
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Cards that support SSC

    FirmTek SeriTek (all) do not currently list any support for SSC.

    Sonnet does have cards that support Spread Spectrum Clocking.

    Sonnet Tempo-X cards (4+4 and 8) both state support for SSC.
    http://www.sonnettech.com/product/tempo-x_esata8.html
    http://www.sonnettech.com/product/tempo-x_esata44.html
    The older 2-port card fails to mention SSC and only lists "1.0 spec"
    http://www.sonnettech.com/product/tempo_serial_ata.html
    Sonnet eSATA FAQ

    Some SATA 2.5 specification drives from Hitachi include support for SSC and enabled. It can be disabled via software (requires PC). Seagate 7200.9 now enables SSC, no word on if or when SeaTools will be updated to change setting (also requires access to a PC). WD Raptors may be changed via jumpers.

    @ Hitachi:

    Hitachi Feature Tool Usage Instructions
    ... Change SATA Settings This allows the user to change the Hard Drive’s maximum
    supported interface speed or Enable / Disable Spread Spectrum Clocking. ...
    Hitachi Feature Tool Usage Instructions (pdf)

    Support | Downloads
    ... Warning!: Switching your drive to support 3.0Gb/s, or enabling spread spectrum clocking
    and then using it, may render your drive unusable in a system that can ...
    Feature Tool (v1.99)

    This is a DOS-bootable tool for changing various ATA features. The Feature Tool allows you to control some of the features of our Deskstar and Travelstar high performance ATA hard disk drives and supports 48-bit addressing, so it will work with the new large capacity drives.

    This version adds support for our latest drives. Changes include:

    * Added new product support
    * Updated documentation and install packages to reflect changes

    The Feature Tool allows you to:

    * Enable or disable the read-ahead or write cache.
    * Change the drive Automatic Acoustic Management settings to the:
    o Lowest acoustic emanation setting (Quiet Seek Mode), or
    o Maximum performance level (Normal Seek Mode).
    * Change the predefined capacity of the drive. This option can be used in situations where there is a BIOS limitation and the drive is not recognized. See the PDF Users Guide for specific details.
    * Switch the Ultra DMA mode
    * Change Advanced Power Mode - allows you to change between the lowest power consumption and the highest power consumption (maximum performance level).
    * Show Drive Temperature - shows the current drive temperature in Celsius and Fahrenheit.
    * Configure SATA interface - adjust maximum speed and enable/disable Spread Spectrum Clocking.

    Feature Tool (v1.99)
    Optional features such as Native Command Queuing, Asynchronous Notification, Staggered Spin-Up, Hot Plugability, Link Power ManagementTM, new cabling configurations, Port Multiplier, Port Selector, and ClickConnect to name a few.
    Last edited by TZ; 11-14-2005 at 09:25 AM.

  2. #42
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Port Multiplier Guide

    MacGurus Port Multiplier Guide
    Sonnet Tempo E4 PM PCI-Express SATA Host Card

    FireWire Depot Multilane SATA II
    The SATA II - 3Gbps 1-to-5 port multiplier bridge board ($160) connects up to five SATA drives to a port multiplier SATA PCI host adapter. The four hot swap SATA drive enclosure with Infiniband / Multiplane ($550) is a compact SATA drive backplane enclosure with four independent SATA hot swap channels.

    FireWire Depot's Multilane / InfiniBand to 4x SATA ports PCI bracket ($50) is a four-channel multilane, Infiniband Serial ATA pass-through PCI bracket. The Multilane / Infiniband Device adapter ($50) is a device-side interconnect adapter that allows 4x SATA devices to be accessed. The five-drive SATA hot swap enclosure ($600) provides a high-performance link between a single SATA host port and five SATA removable hard disk trays without internal cabling. FWDepot PM
    AMUG SilverSATA V port multiplier
    A lot of in-depth information (and education) on this technology. Excellent "how-to" with photos, benchmarks, and very thorough. A few (of the many) items discussed:

    The WiebeTech PCI-11 PCI-X host adapter used in this review, does not provide boot capability, does not pass through SMART drive temperatures or status, has some problems with deep sleep, and has no on screen SATA mounting feedback like the FirmTek host adapters provide.

    Using a single SATA cable per drive setup performed over 29% better on average and over 40% better when empty while writing data to the RAID. Using the port multiplier method with a single cable provided significantly slower performance. While using a port multiplier is the latest SATA development it may have some trade offs. If you are going to create a five drive RAID, using the single cable per hard drive method with a FirmTek host adapter will provide faster performance.

    In the three drive striped RAID test above the single SATA cable per drive method of mounting was still 16% faster while writing data to the RAID, but the read rate was very close to the results produced by the port multiplier method using the PCI-11 host adapter.

    When the need to expand disk capacity is greater than the need for absolute speed, a port multiplier system will be a better choice than the single drive per cable method. Another situation that would give a SATA port multiplier system an advantage would be if the computer only has a single SATA port. If a MacBook Pro used the ExpressCard/34 slot to add port multiplier SATA connectivity, this would allow the MacBook to mount up to five SATA hard drives instead of just one.
    AMUG: SilverSATA V
    http://www.wiebetech.com/products/silversata.php
    Addonics 5x1 eSATA Port Multiplier
    Addonics today announced its 5x1 eSATA Port Multiplier (PM), which allows multiple drives to be connected to a SATA controller via a single eSATA port for expanded storage and high-speed 3GB/sec transfers.

    The Addonics PM fits inside the Addonics Storage Tower, its compact aluminum drive enclosure that allows users to mix and match multiple drive interfaces as well as hard drive or optical storage devices. The Adonnics PM is also designed to fit any standard SCSI enclosure that has 2 bays or larger and has a 50-pin Centronic SCSI connector on the back plane. The Port Multiplier can be set up to support each drive individually or as a RAID or JBOD (just a bunch of disks). Using multiple PMs, the Addonics 4-Port eSATA controllers can support as many as 20 SATA hard drives via a single controller. It is available for $90.
    Storage Tower
    Port Multiplier
    http://www.sata-io.org/portmultiplier.asp

  3. #43
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Sonnet Tempo SATA E4P PCIe PM

    AMUG: Port Multiplier PCIe SATA Host Adapter
    A Review of the Sonnet Tempo SATA E4P Four Port External PCI Express Host Adapter
    By Arthur Whalem

    The PowerMac G5 Dual-Core and Quad-Core models have four PCI Express slots. PCI Express slot 1 which is the bottom slot has 16 lanes. It is designated as "1" 16x on the PowerMac G5 PCIe frame. This16x PCIe slot is the fastest slot in the PowerMac G5. It is factory configured for use with the Apple pre-installed video card. Slots 2 and 4 are empty when your new PowerMac G5 arrives. They both provide 4x speed. At 250 MBps per lane, a four-lane (4x) slot can transfer data at up to 1GB per second which should be similar in speed to a 64-bit 133MHz PCI-X slot which has a theoretical maximum speed of 1067 MB per second. The Apple PowerMac G5 PCIe bus slot 3 is rated at a speed of 8x. At 250 MBps per lane, an eight-lane (8x) slot can transfer data at up to 2GB per second. That is almost twice as fast as a 64-bit 133MHz PCI-X slot.

    "Each slot uses a standard connector that can accommodate a card of any size. This means a four-lane card works perfectly in an eight-lane slot. If the card has more lanes than the slot, the card adjusts to the bandwidth available and ÒdownshiftsÓ to that data rate. With the high-bandwidth architecture in the new Power Mac G5, your system will not only achieve faster performance today, but will be ready for future technologies as well. For example, 10-gigabit networking technology, which can achieve up to 2.5 GBps of data throughput, will require an eight-lane slot."

    "Q. Can I operate a Sonnet PCIe x4 card in a PCIe x8 or x16 slot? A. Not at this time." While I have found that mounting a RAID with the Tempo SATA E4P in the 8x PCIe slot 3 may work, it will occasionally not be recognized when booting. I tested the Tempo SATA E4P in slot 3 as the Apple Technology Overview indicated it should work.

    In three out of twenty tests of rebooting a PowerMac G5 Quad with the Tempo SATA E4P installed in slot 3, the card was not recognized by the Macintosh. When this situation occurs you can open system profiler and the E4P card will not show up under the PCI cards tab. Restarting the computer usually enabled the Tempo SATA E4P in system profiler. Every reboot with a Tempo SATA E4P in slot 3 is one more chance that it will not be recognized. There appears to be a hardware problem with the Tempo SATA E4P that does not allow it to work consistently while installed in an 8x slot.

    The Sonnet Tempo SATA E4P does not have boot capability. FirmTek SATA host adapters provide this feature for PowerMac models with PCI or PCI-X slots. However, no company has released a PCI Express SATA host adapter for the Macintosh that supports booting so far.

    System Requirements
    Mac OS X Version 10.2 and later.
    Windows XP support.
    Supports up to four external SATA 3.5" drives using direct cable method.
    Supports up to twenty external hard drives using four, five bay PM enclosures.

    http://www.sonnettech.com/product/tempo_sata_e4p.html

    Q. How can I distinguish between the newer Tempo-X eSATA products supporting 3 Gigabit speeds and the older cards that supported 1.5 Gb speeds?
    A. The new 3 Gigabit/second eSATA cards contain a rather large Marvell chip with the string “88SX6081” on it. Previous generation eSATA cards had a Marvell chip labeled “88SX5081”. Additionally, you can check your Macintosh System Profile. When you select the installed eSATA card, the Device ID will show either “0x6081” or “0x5081”.


    http://www.sonnettech.com/support/fa...ta_faq.html#q8

    Barefeats takes Hitachi 7K500s and finds out just how well 8 and 12 drives deliver for uncompressed video applications at even 90% full on a 4.8TB array.
    http://www.barefeats.com/hard72.html
    Last edited by TZ; 06-23-2006 at 11:48 AM.

  4. #44
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Choosing PM SATA

    Quote Originally Posted by ricks
    First consideration needs to always be how to backup those precious data files. As you look at solutions to the basic needs, plan to double it so you have sufficient (identical capacity) backup as well. I know, ouch! But data security is job one.
    Performance in current port multipliers:

    A single port multiplier cable and board will pass a maximum of 225 MB/sec.

    A single drive empty will push a little under 70, most under 65 MB/sec.

    Add the numbers up. As you add drives in a RAID0 eventually you get more than 225 MB/sec with 4 or 5 drives. But as the drives fill up the speed drops below 225 no matter which way they are attached.

    For most purposes there is no speed hit taken with a port multiplier enclosure. Really only for a scratch disk would it matter and that only because the direct connected drives would be capable of a bit more speed when empty.

    For videographers port multiplication is the best of all worlds giving expandability and performance. It just doesn't matter how fast an array is when empty, only maintaining enough sustained throughput to get your job done matters. All the 'extra' speed in the world does nothing to improve workflow.

    For uncompressed 1080i 444 High Definition it takes 8 drives minimum to handle the bandwidth required. Matters not one bit whether those drives are direct connected or port multiplier fed. You still need 8 drives.

    I believe the new Port Multiplier SATA storage is THE killer option today. Speedy and expandable, port multiplier (PM) enclosures allow you room to grow. Other features like hotswap capability will allow you to archive out hard drives for off line storage. PM SATA storage has pretty much taken over our entire photographer's market. We are absolutely bonkers around here right now just keeping up with stock to fill the orders. Not a bad thing, just shows how the new technology is rockin our market.

    This stuff works. Sonnet did a great job with the host cards that support port multiplication, PCI-X here and PCIe here. These cards allow up to 5 drives off each port. Speed when the drives are not in a striped RAID is identical to direct connected drives. I probably wouldn't use a PM setup for a scratch disk RAID but for everything else it performs superbly.

    Being as how you can attach a bunch of 4 or 5 bay enclosures to it it has growth into the future that no other storage method can match. As you get into larger and larger formats with todays camera backs going to 16 megapixels, 20 and even over 30 - your needs are only going to grow into the future. Port Multiplier SATA is the only way I know that can keep on growing with that. Only get the number of drives you need now, even get a 4 bay with just 2 drives and add 2 more later. WHen you need more next year, just add another enclosure and set of by then even cheaper per GB drives.

    Whatever you do, plan your purchase in pairs! One drive for data, one drive for backup. I like to use an application to make the backup on a schedule. We use SyncronizeProX for this and get along with it very well. Many of our photographer customers are getting pairs of enclosures. One for the data drives and the other for the backup. This may be larger in capacity than you need, but you get the idea. The beauty of the 2 enclosure setup is the separation of the backup. Different cables, different port multiplier card, different power supply. All this lends a little more security to the backup.

    We are all really excited with the new SATA technologies. You will find it the most economical and speediest solution to be had. No bridges converting the data stream and reducing reliability. I believe this is the proper solution for the job.

    Rick
    Last edited by TZ; 06-24-2006 at 09:36 AM.

  5. #45
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Addonics Port Multiplier

    SATA PM, installation, hot swap, adding drive activity lights, compatible host adapters and performance. Several tests demonstrate how performance differs between direct connections and port multiplier setups.

    AMUG: Five Drive eSATA Port Multiplier Upgrade

  6. #46
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb FirmTek's SATA ExpressCard/34

    FirmTek's SATA ExpressCard/34 Host Adapter for the MacBook Pro $119.95
    http://www.firmtek.com/seritek/seritek-2se2-e/

    Reviewed by Barefeats this thing is FAST!
    http://www.barefeats.com/hard71.html

  7. #47
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Default FirmTek 2 Port PCI Express SATA II host adapter

    FirmTek Is Showing Their 2 Port PCI Express SATA II host adapter has two external ports and will cost $99.95. Will be available in the third quarter of this year.

  8. #48
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Addonics 5X1 eSATA Port Multiplier

    Five Drive eSATA Port Multiplier Upgrade
    Expanding Enclosure Options

    This board enables up to five SATA hard drives to share a single port on a SATA host adapter with port multiplier capability. The Addonics 5X1 eSATA Port Multiplier is designed to be used internally in an Addonics Storage Tower or with many of the standard 2 bay or larger SCSI enclosures available on the market. The beauty of the port multiplier is that it enables an SATA host adapter to mount up to five hard drives on a single port.

    AMUG Review Addonics 5X1 eSATA Port Multiplier

    Addonics is shipping the 5X1 eSATA Port Multiplier (PM) (AD5SAPM-E) for $85. Addonics 5X1

    I was testing the Silicon Image 1.1.0 Mac driver. The SATARAID5 application that allows the drives to be seen by the SiI-3124 host adapter writes a chunk of code to the hard drive in a part of the drive that Disk Utility does not erase.


    Quote Originally Posted by ricks
    MIght not be the best board source to publish here. We carry the same board only with the correct firmware to run on a Mac. Lycom builds them, Addonics just slaps their name on it.
    MacGurus Port Multiplier Burly enclosures
    Last edited by TZ; 06-19-2006 at 04:43 AM.

  9. #49
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb SeriTek/2SE2-E PCI Express eSATA

    FirmTek Announces First Shipments of SeriTek/2SE2-E PCI Express eSATA
    Adapter for the Latest Macintosh G5 (and now Mac Pro).

    PCI Express (also known as PCIe) gives each device dedicated
    bandwidth and access to the system controller. Under this design
    standard, slots are defined by the number of data lanes included;
    usually one, four, eight or sixteen, each supporting up to 250 Mbps.
    The new G5s include a 16-lane slot intended for a graphics, as well as
    two slots with four lanes and one slot with eight. Cards must be
    specially designed to work with this new standard.

    As a PCI Express card, the SeriTek/2SE2-E is solely intended for use
    with the new Dual and Quad-Core G5 systems and PCs that utilize the PCI
    Express bus. This new card design is not compatible with older PCI-X or
    PCI slots.

    FirmTek's SeriTek/2SE2-E adapter for the latest G5 and PCs running
    Windows and Linux is available now from FirmTek's network of resellers
    and from the FirmTek website, with estimated retail pricing of
    USD$99.95. For more information or to order, please visit FirmTek's
    website.

    www.firmtek.com/seritek/seritek-2se2-e

    Bootable PCI Express SATA Solution

    AMUG Review FirmTek SeriTek/2SE2-E

    I know people have been waiting for a PCI Express SATA controller for the Mac Pro, support for EFI, Boot Camp, Port Multiplier.
    Quote Originally Posted by ataMan
    - would be very surprised if the 2SE2-E with 5.2.0 firmware won't work. It works now with PortMultiplier, all Seagate drives (including the somewhat problematic discontinued firmware 2.AEA), SSC off, SSC on. Same with Hitachi 400 GB SATA-1 drives.

    - 5.2.0 is actually bootable. It boots for instance from the Port Multiplier. In the fact, this is industry's first card which supports an OS booting from Port Multiplier. Under Windows or DOS I am not aware, there is a card which boots Port Multiplier. Luckily, "this" OS is MacOS-X. The card also has "Turbo Boot" feature. Will migrate to "Turbo Boot" slowly over all past products and in the future it will be standard.

    http://www.amug.org/amug-web/html/am.../firmtek/2se2e

    (was actually turbo-booting since 5.1.6 but it was kept it low-profile because the entire OF driver had to be re-written from the scratch, so it needed some time to mature)

    - There are some candies for PC/Bootcamp users. And it works with MacPro, of course.
    Last edited by TZ; 11-12-2006 at 08:36 AM.

  10. #50
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Sonnet Tempo SATA firmware update

    Sonnet Tempo SATA - 2.0.4b1
    firmware update for serial ATA PCI cards


    Description: This beta software updates any compatible Tempo SATA card's flash ROM (firmware) to driver version 2.0.4b1; compatible models include all Marvell-based PCI-X and PCIe Tempo SATA cards. This version adds full support for Silicon Image 4726 and 4723 chip-based port multiplier enclosures, such as the LaCie Biggest S2S, when used with Tempo SATA E4P and Tempo SATA X4P cards. If you are using drive enclosures without port multipliers, or if you are using a Tempo SATA card other than the two listed here, we recommend you use the Version 2.0.3 firmware updater.

    Note:
    This software runs only under Mac OS X.

    http://www.sonnettech.com/downloads/...#sata_firmware
    Sonnet engineers are working on a sleep issue. If the computer sleeps with drives connected it probably will not wake. Looks like disabling sleep is the only cure until a fix comes out. That means BOTH uncheck 'Sleep Hard Drives whenever possible' and set system sleep to Never!
    There will most likely be a firmware fix for this in the soonish future. Impossible to predict when since a fix needs to go through QA testing before release. At that time I will update this to indicate the new firmware.
    Description: Installation of this software provides support for Tempo Serial ATA host controllers (except the 2-port Tempo Serial ATA model) on Windows XP or Windows XP x64 based computers with an available PCIe, PCI-X or PCI slot.

    *Support for port multipliers under Windows currently limited to Silicon Image 3726 chip-based products such as Sonnet's Fusion 500P enclosure. Silicon Image 4726 chip-based port multipliers are not supported at this time; check this page for future updates.
    Sonnet firmware 2.02 or later:

    If you are using Sonnet Tempo-X 4+4 eSATA PCI-X controller for your Barracuda 7200.9 (SSC disabled) 500 GB drives or RAID contact Sonnet for appropriate firmware upgrade to fix wake from sleep and RAID support problems.
    Last edited by TZ; 06-24-2006 at 08:06 AM.

  11. #51
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Multilane Infiniband

    Customers use multilane for both storage and connectivity. Products using multilane for storage tend to top out with 16 drives most of the time, between one and four RAID cards, although a few products are up to 24 drives.

    Infiniband connectors are also commonly seen here for 10Gbps connections.

    Description

    Like Fibre Channel, PCI Express, and many other modern interconnects, InfiniBand uses a bidirectional serial bus so that it can avoid the signal skew problems of parallel busses when communicating over relatively long (room- or building-scale) distances. Although it is a serial connection, it is very fast, with 2.5 gigabits per second (Gbit/s) links in each direction per connection. InfiniBand also supports double and quad data rates for 5 Gbit/s or 10 Gbit/s respectively. Links use 8B/10B encoding so every 10 bits sent carry 8 bits of data, such that the actual data rate is 4/5ths the raw rate. Thus the single, double and quad data rates carry 2, 4 or 8 Gbit/s respectively.

    Links can be aggregated in units of 4 or 12, called 4X or 12X. A quad-rate 12X link therefore carries 120 Gbit/s raw, or 96 Gbit/s of user data. Most systems today use a 4X single data rate connection, though the first double-data-rate products are already entering the market. Larger systems with 12x links are typically used for various cluster and supercomputer interconnects and for inter-switch connections.

    The most common configuration of the PCI bus is a 32-bit 33MHz version that provides a bandwidth of 133MB per second, although the 2.2 version of the specification allows for a 64-bit version at 33MHz for a bandwidth of 266MB per second and even a 64-bit 66MHz version for a bandwidth of 533MB per second. Even today's powerful desktop machines have lots of capacity available with the PCI bus in the typical configuration, but server machines are starting to hit the upper limits of the shared bus architecture. The availability of multiport Gigabit Ethernet NICs, along with one or more Fibre Channel I/O controllers can easily consume even the highest 64-bit, 66MHz version of the PCI bus.

    To resolve this limitation on the bandwidth of the PCI bus, a number of solutions are becoming available in the market as interim solutions such as PCI-X and PCI DDR (Mellanox Technologies, "Understanding PCI Bus, 3GIO, and InfiniBand Architecture"). Both of them are backwards compatible upgrade paths to the current PCI bus. The PCI-X specification allows for a 64-bit version of the bus operating at the clock rate of 133 MHz, but this is achieved by easing some of the timing constraints. The shared bus nature of the PCI-X bus forces it to lower its fanout in order to achieve the high clock rate of 133 MHz.

    A PCI-X system that is running at 133 MHz can have only one slot on the bus, two PCI-X slots would allow a maximum clock rate of 100 MHz, whereas the four slot configuration would drop down to a clock rate of 6 MHz (Compaq Computer Corporation, "PCI-X: An Evolution of the PCI Bus," September 1999, TC990903TB.). So, despite the temporary resolution of the PCI bandwidth limitation through these new upgrade technologies, there is a long term solution needed that cannot rely on a shared bus architecture.

    InfiniBand breaks through the bandwidth and fanout limitations of the PCI bus by migrating from the traditional shared bus architecture into a switched fabric architecture.


    Each connection between nodes, switches, and routers is a point-to-point, serial connection. This basic difference brings about a number of benefits:


    • Because it is a serial connection, it only requires four as opposed to the wide parallel connection of the PCI bus.
    • The point-to-point nature of the connection provides the full capacity of the connection to the two endpoints because the link is dedicated to the two endpoints. This eliminates the contention for the bus as well as the resulting delays that emerge under heavy loading conditions in the shared bus architecture.
    • The InfiniBand channel is designed for connections between hosts and I/O devices within a Data Center. Due to the well defined, relatively short length of the connections, much higher bandwidth can be achieved than in cases where much longer lengths may be needed.


    Other related interesting developments include the definition of the SCSI RDMA Protocol (SRP) over InfiniBand which is work in progress and the definition of the Sockets Direct Protocol (SDP) whose goal is to define a sockets type API over InfiniBand.

    An Introduction to InfiniBand Architecture

  12. #52
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb AppleTalk over AirPort networks

    Problems accessing AppleTalk over AirPort networks with Intel-based Macs (#2) We continue to report an issue where users are unable to wirelessly access AppleTalk services (printers, etc.) through various routers when using an Intel-based Mac.

    The latest case example comes from a reader:

    "We have typically have this problem. None of the new MacBooks can access AppleTalk printers over AirPort. They find the printers on RJ45 (Ethernet). PowerPC-based Macs always work well."

    This issue should not be appearing with Apple's AirPort base stations. If you are experiencing this issue with an AirPort unit, make sure that both your AirPort card and base station firmware (Dual-Ethernet, Express, Extreme) are up-to-date. Also, make sure you are running Mac OS X 10.4.7 or later. If you are still having this problem with an AirPort base station after updating firmware, please let us know.

    The reason this problem manifests is that some types of Ethernet packets (the individual units of data sent over the network) including IP-over-Ethernet use a specific format: 12 bytes of destination and source addresses, plus a two byte "type" field. AppleTalk packets, however, use a "SNAP" frame, which is a slightly different format.

    All wireless 802.11 packets, those used by WiFi hardware, are actually SNAP frames.

    So, when you have a device connected via wire -- a printer connected via an Ethernet cable, for instance, it is sending regular Ethernet packets. The wireless router then has to translate the packets into SNAP format. In reverse, it has to change SNAP packets back into regular Ethernet packets.

    The problem, as they say, is a loss in translation. Some SNAP packets need to be specially handled, or else they will end up mangled and unable to be transferred. Some wireless hardware has problems with this translation process, causing the inability to access wired AppleTalk devices over the wireless network.


    MacFixit Report

  13. #53
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb SeriTek 2SE2-E 5.2.0 firmware Port Multiplier

    I know people have been waiting for a PCI Express SATA controller for the Mac Pro, support for EFI, Boot Camp, Port Multiplier.
    Quote Originally Posted by ataMan
    - would be very surprised if the 2SE2-E with 5.2.0 firmware won't work. It works now with PortMultiplier, all Seagate drives (including the somewhat problematic discontinued firmware 2.AEA), SSC off, SSC on. Same with Hitachi 400 GB SATA-1 drives.

    - 5.2.0 is actually bootable. It boots for instance from the Port Multiplier. In the fact, this is industry's first card which supports an OS booting from Port Multiplier. Under Windows or DOS I am not aware, there is a card which boots Port Multiplier. Luckily, "this" OS is MacOS-X. The card also has "Turbo Boot" feature. Will migrate to "Turbo Boot" slowly over all past products and in the future it will be standard.

    http://www.amug.org/amug-web/html/am.../firmtek/2se2e

    (was actually turbo-booting since 5.1.6 but it was kept it low-profile because the entire OF driver had to be re-written from the scratch, so it needed some time to mature)

    - There are some candies for PC/Bootcamp users. And it works with MacPro, of course.

  14. #54
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Multilane 8-Bay HD

    http://www.amug.org

    AMUG have published (as usual) an excellent test of the EnhanceBox E8-ML SATA Hot Swap Multilane 8-Bay HD enclosure coupled to a HighPoint RocketRAID 2322 to create a very fast RAID 5 setup for the Apple Mac Pro.

    Performance is simply amazing: read and write performance of 420MB/sec while redundancy provided by RAID 5 was successfully tested .

    Add an Eight Bay RAID 5 to the Apple Mac Pro

  15. #55
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb Mac Pro PCIe SATA

    Tempo SATA E4P
    Sonnet Technologies is shipping the Tempo SATA E4P ($299.95) four port external serial ATA PCI Express host adapter with a new Mac Pro driver. AMUG previously reviewed the Sonnet Tempo E4P installed in a PowerMac G5 and we thought it would be interesting to see how it performs when used with an Apple Mac Pro 2.66 GHz model.

    MacPro Compatible Sonnet Tempo E4P PCIe SATAII Host Card

    HighPoint RocketRAID 2322
    AMUG: EnhanceBox E8-ML SATA Multilane 8-Bay Enclosure

    two multilane data ports are provided to connect the hard drives mounted inside the EnhanceBox E8-ML to the SATA host adapter. Macintosh users will find the HighPoint RocketRAID 2322 external Mini-SAS to PCIe SATA II RAID controller is a perfect solution for connecting the EnhanceBox E8-ML enclosure to an Apple Mac Pro. The RocketRAID 2322 can be used with two external mini-SAS to Infiniband (screw) cables (model Ext-MS-1MSB) to support up to eight hard drives mounted inside the EnhanceBox E8-ML.

    Why would AMUG choose the RocketRAID 2322 for use with the EnhanceBox E8-ML?

    The reason is that when the RocketRAID 2322 is used with two external mini-SAS to Infiniband (screw) cables (model Ext-MS-1MSB) it can support up to eight hard drives mounted inside the EnhanceBox E8-ML enclosure with a single PCIe card. In addition, the RocketRAID 2322 supports RAID 0, RAID 1, RAID 5, RAID 1/0 and RAID 5/0. No other Macintosh compatible PCIe SATA host adapter provides all of these features with the EnhanceBox E8-ML.


    HighPoint RocketRAID 2314 PCIe SATA 3G Host Adapter with RAID 5 support

    this new RocketRAID 2314 PCIe SATA 3G host adapter comes with four standard external eSATA connectors. They have added a key feature -- the ability to recover data stored in a bad sector and relocating it in a good sector.

    Key features include:
    - S.M.A.R.T. monitoring of individual drives
    - support for RAID 0, 1, 5 and 10
    -
    automatic rebuilding of a degraded RAID set
    - staggered drive spinup
    - Port Multiplication (coming first week of April)


    The RAID 5 configuration uses the space of one hard drive for parity information, while RAID 5/0 uses the space of two hard drives for parity data. This causes the RAID size to shrink and the performance to be slightly reduced in each of the corresponding columns. However, RAID 5 and 5/0 will provide redundancy while RAID 0 does not. Users that are looking for redundancy in a disk array while still supporting over 420MB/sec average performance results, will find that using the EnhanceBox E8-ML with the RocketRAID 2322 in a RAID 5 configuration provides a powerful option.

    HighPoint RocketRAID 2322 External Mini-SAS to PCIe SATA II RAID Controller


  16. #56
    Join Date
    Jan 2001
    Location
    Mobius Strip
    Posts
    13,045

    Lightbulb SeriTek/2SE4 PCI-X Port Multiplier

    Bootable PCI-X 4-Port SATA PM Host Adapter
    FirmTek SeriTek/2SE4 PCI-X Serial ATA Host Adapter for the Apple PowerMac

    The SeriTek/2SE4 utilizes Disk Utility to setup individual hard drives or RAIDs. It supports sleep mode, hot swap and passes hard drive SMART data to Mac OS X. The ability to use SMART data to monitor hard drive temperatures and drive status is a nice feature that the standard Silicon Image SiI-3124 Mac drivers currently do NOT support. FirmTek had to build their own SiI-3124 driver to provide these features to Macintosh users. With the FirmTek SeriTek/2SE4 SATA host adapter installed, PCI-X PowerMac G5 users can enjoy SATA PM connectivity, boot capability and easily monitor hard drive temperatures.

    http://www.firmtek.com/seritek/

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •