View Full Version : Hitachi Drives

01-23-2005, 09:57 AM
Hitachi drive issue?
The chipset used by the SeriTek/1V4 and /1VE4 includes an Intel ASIC that doesn't support Spread Spectrum Clocking (SSC). This is a feature designed for SATA III. (We're still at SATA I.) There is even a debate as to whether SSC is even needed for SATA III.

For some reason, Hitachi decided to be different from everybody and enable SSC in all their 7K250 drive. I contacted Hitachi back when I first heard about the issue. They said if I send them a drive, they would disable SSC at the factory. Under pressure from a large OEM and realizing they might lose sales, Hitachi decided to release an alternate version (and part number) for the 7K250s with SSC disabled. That version of Hitachi drive WILL work with the SeriTek 1V4 and 1VE4.

Hhere is the list of part numbers that have SSC disabled and therefore do work with the SeriTek/1V4 and 1VE4:

7K400 (400GB) - 0A30984 and 0A30985
7K250 (250GB) - 0A30340
7K250 (160GB) - 0A30339
7K250 (120GB) - 0A30338
7K250 (80GB) - 0A30337

Barefeats: FirmTek SeriTek IV4 and IVE4 4-channel SATA review (http://www.barefeats.com/firm1V4.html)

Barefeats is the first to announce the new SeriTek cards from FirmTek.
Jan 7, 2005
On January 10th, FirmTek will show their new 4 channel PCI-X host adapters at MacWorld Expo San Francisco. One has to wonder what they are bringing to the crowded table with the SeriTek/1V4 (internal connectors) and SeriTek/1VE4 (external connectors).

Three unique things come to mind after spending some time testing their products.

1. Hot-Swap (1VE4 only) - No other S-ATA card does that.
2. Bootability -
3. Downward Compatibility - Though they are PCI-X rated, they work fine in any Power Mac with PCI slots. They work with OS X, OS 9 -- even OS 8. (Other cards may work in legacy Power Macs but require OS X.)

Barefeats (http://www.barefeats.com/firm1V4.html)

The SeriTek/1SEN2 bundle includes the SeriTek/1EN2 External Dual-Bay Hot-Swap Enclosure and the SeriTek/1SE2 Two-Port External Serial ATA Adapter.

The SeriTek/1EN2 is a rugged, dual-bay Serial ATA (SATA) external hard drive enclosure. It provides versatile hot-swap capabilities with virtually unlimited storage possibilities in a small form-factor package. Built from the ground-up as a true Serial ATA solution, SeriTek/1EN2 features a case made of aluminum for maximum durability and heat dissipation.

The SeriTek/1SE2 Host Adapter extends Serial ATA's 1.5Gbits/sec performance to the outside of the Macintosh computer chassis, enabling users to take advantage of external Serial ATA enclosures such as the SeriTek/1EN2. With two external ports, the SeriTek/1SE2 provides the high bandwidth necessary to meet the needs of performance-hungry applications while offering hot-swap flexibility similar to that of Universal Serial Bus (USB) and FireWire.
MacGurus SeriTek/1SE2 Host Card (http://www.macgurus.com/productpages/sata/FT1003.php)
Review FirmTek SeriTek/1SE2N2 bundle (http://www.amug.org/amug-web/html/amug/reviews/articles/firmtek/1sen2/)

05-25-2005, 06:11 AM
400GB of Storage for your video editing pleasure.
Hitachi Deskstar 7K400 HDD
Category: Storage
by Sergey Romanov

We are taking a closer look at a new Hitachi hard disk drive boasting 400GB storage capacity. The combination of excellent performance with a number of features:

¥ hot-swap Serial ATA
¥ active vibration compensation,
¥ commands for processing streaming data
¥ new electronics that supports the UltraDMA/133 protocol

Where the Serial ATA Deskstar 7K250 used to be slower than its ATA version, the Deskstar 7K400, on the contrary, speeds up. The gain amounts to 60% at most. The developersÕ work is truly astonishing, even though itÕs not perfect: the performance has degenerated on some controllers. Well, the Deskstar 7K250 didnÕt show its best on some controllers, either.

The combination of excellent performance with a number of exciting features like hot-swapping Serial ATA, active vibration compensation, and commands for processing streaming data would make the Deskstar 7K400 a versatile hard disk drive if it were not for its crazy capacity of 400 gigabytes!

Xbitlabs (http://www.xbitlabs.com/articles/storage/display/hitachi-7k400.html)

06-25-2005, 09:18 AM
Choosing ATA or SATA: Hitachi T7K250 (http://www6.tomshardware.com/storage/20050523/hitachi-deskstar-03.html) faster seeks and lower access times for 7.2k drives.

NCQ helps, but well, for now, nothing can really touch the 10k RPM of the Raptor. We see the Seagate here again at the back of the pack.

Western Digital - No surprises here, in terms of raw transfer speed, the 10k spindle speeds of the Raptor makes it untouchable especially as the drive gets full. The next closest drive in this comparison, the Maxtor, could only muster 45 MB/s vs the 52 MB/s of the Raptor. With a 10k spindle speed, nothing can touch the Raptor.

Final Scores -
Raptor - 90%
Hitachi - 86%
Seagate - 91% (for its 5 yr warranty)
Maxtor - 85%

Raptor: Insanely fast performance
Seagate, Raptor: Awesome 5 year warranties
Hitachi: Solid performance
Seagate: Awesome price per GB

Hitachi, Maxtor: Only 3 year warranty
Seagate: Slow seek times, slowest performance of the bunch
Raptor: Cost per GB considerably higher
Conclusions (http://www.hardcoreware.net/reviews/review-277-7.htm)
Tom's Hardware (http://www.tomshardware.com/storage/20050523/index.html) dishes up a review of the latest Hitachi 250GB offering.

In Conclusion:
In the end, the T7K250 wasn't able to beat the reigning champion in the field of peak data transfer rates, the Samsung Spinpoint P120. However, the new DeskStar really shone when it came to access times, taking second place only to Western Digital's Raptor series, which spins at 10,000 RPM.
All in all, the Samsung drive gets our nod.

Hitachi Global Storage Technologies' Deskstar T7K250

Reviewing Maxtor, Seagate, and Western Digital to find out how the T7K250 stacks up against the competition. Almost as fast as Raptor, and the fastest boot time. So if you don't need or want the smaller Raptor, this could be your best choice. (It even beat out the 36GB Raptor.)

The new platters pack 56% more data into the same area than 80GB platters, allowing the drive head to access a given amount of data over a shorter distance. Higher areal densities are probably the most important means of boosting hard drive performance without going to higher spindle speeds.

The T7K250 also supports Native Command Queuing (NCQ). Command queuing can offer significantly better performance in multi-user environments with loads of outstanding I/O requests, but it may not be as useful in less demanding single-user environments.

With a strong WorldBench performance, quick load and boot times, and the lowest noise levels of the pack, the Deskstar seems best suited for desktop and perhaps media center applications.

Model T7K250 - vs - 7K250
Internal transfer rate 105.4MB/s - 94.6MB/s
Sustained transfer rate 32.9-67.8MB/s - 29.7-61.4MB/s
Average read seek time 8.5 8.5ms
Average typical seek time 8.5 - 8.8ms
Average rotational latency 4.17ms - 4.17ms
Spindle speed 7,200-RPM
Cache size 8MB
Platter size 125GB 80GB
Available capacities 160, 250GB - 80, 120, 160, 250GB
Idle acoustics 2.8 bels 2.6-3.0 bels
Idle power consumption 6.2W 5.6-7.6W
Native Command Queuing? Yes - No
T7K250 (http://techreport.com/reviews/2005q2/hgst-t7k250/index.x?pg=1)

Access times (http://www6.tomshardware.com/storage/20050523/hitachi-deskstar-07.html) All in all, the Samsung drive gets our nod if you're only looking for an upgrade to increase your storage space. If the new drive is also intended to house your operating system, we suggest the new Hitachi drive instead. Raptor, T7K250, Cuda 7200.8, DiamondMax 10 (http://www.hardcoreware.net/reviews/review-277-1.htm)
Comparison random I/O performance (http://www.hardcoreware.net/reviews/review-277-4.htm) which would be more indicative of an OS X boot drive and help in a scratch RAID setup.

08-06-2005, 09:47 AM
7K500 Hitachi PATA/SATA
Technical specs of the Hitachi 7K500.

# Highest capacity available in the industry
# 56 hours of HDTV broadcast
# 125,000 high quality, 4 minute MP3 recordings
# Faster system boot-up
# SATA II - 3.0 Gb/s interface
# 300MB/s burst data rate for faster data access
# Optimum performance in multi-drive systems
# Data integrity enhanced throughout circuits
# Reduces system hear/cooling requirements
# Enables industry-leading acoustics
# Protects user data when power is removed
# Rotational speed - 7200 RPM
# Interface standard - SATA II - 3.0Gb/s (Serial) and ATA Ultra 133 (Parallel)
# Average seek time - 8.5 ms
# Rotational vibration safeguard
# ATA-7 streaming feature set
# Latching SATA connector
# RoHS Compliant

Sustained data rate (MB/sec) 64.8 - 31
Media transfer rate (max. Mbits/sec) 817

www.hgst.com - Deskstar 7K500 (http://www.hitachigst.com/hdd/support/7k500/7k500.htm)

The Deskstar 7K500 is one of the first half-terabyte SATA drives on the market. It's also one of the first to feature a 3.0-Gbps SATA II interface, which is twice as fast as the original SATA 1.0 specification. This speedy new transfer rate rivals that of enterprise-class SCSI drives.

Hitachi's Smooth Stream technology, based on the ATA-7 AV Streaming Feature Set, enhances video streaming by allowing the host to control the drive's error-recovery process, thus tuning the drive to capture video data streams. Hitachi expects to see it used in high-capacity DVRs, which require hard drives optimized for the high-speed transfer of digital video.

A single-chip SATA controller with Native Command Queuing speeds the control of commands sent from the host processor to the drive. HitachiÍs Rotational Vibration Safeguard technology ensures stability in high-vibration environments such as when multiple drives are installed in a single enclosure.

Fast and capacious, the Deskstar 7K500 also satisfies the Restriction of Hazardous Substances (RoHS) compliance, a directive recently issued by the European Union to reduce lead and other hazardous substances from electronic products by August 2006. All Hitachi hard drives introduced in 2005 and beyond will be RoHS-compliant.

Having half a terabyte of storage space on a single spindle is risky because it's an awful lot of data to lose. System builders should encourage their customers to purchase some sort of backup device that can store as much as the hard drive they're using.

SAN JOSE, Calif., April 4, 2006 Ð Hitachi Global Storage Technologies

( Hitachi) today announced two new 3.5-inch hard drives that extend the company's long-standing tradition of performance and capacity leadership. The Deskstar¨ T7K500 and Deskstar 7K160 feature 7,200 RPM spin speeds and 3Gb/s SATA interfaces to deliver maximum performance in mainstream and high-performance PCs, gaming systems and low duty cycle servers. The new drives use 160GB+ per platter technology to deliver up to one-half terabyte (500GB) of storage capacity in a one-, two- and three-disk design. The reduced platter count and proven Deskstar design platform optimize the drives for high-volume manufacturing and streamlined product qualifications.

Hitachi will continue to provide its award-winning Deskstar 7K500 for customers that require extended operation and higher duty cycles. These 500 GB drives include enterprise-class features that enhance reliability for nearline storage applications such as disk-to-disk backup and high-bandwidth applications like digital video editing.
Hitachi 160GB platter T7K500 and 7K160 (http://www.hitachigst.com/portal/site/en/menuitem.368c8bfe833dee8056fb11f0aac4f0a0/index.jsp?epi-content=GENERIC&folderPath=%2Fhgst%2Faboutus%2Fpress%2Finternal_ne ws%2F&docName=20060404_deskstar_.html&beanID=804390503&viewID=content)

03-16-2007, 06:53 AM
Hitachi GST's 1TB Deskstar 7K1000 drive (http://www.techworld.com/storage/news/index.cfm?newsid=7717) spinning at 7,200rpm with a 3GBit/s serial ATA interface. The drive uses perpendicular recording, has five platters, a read access time of 8.5msecs and a write time of 9.2msecs. It has a cache of 32MB and an 8.7ms average seek time.

A couple reviews are up.

PCWorld (http://www.pcworld.com/article/id,130598-page,1/article.html)
Hitachi Deskstar 7K1000 in RAID 0: Is Two Terabytes really better than One? (http://www.anandtech.com/printarticle.aspx?i=2969)
7K1000: Terabyte Storage arrives on the Desktop (http://www.anandtech.com/storage/showdoc.aspx?i=2949)
A7K1000 specs (http://www.hitachigst.com/tech/techlib.nsf/products/Ultrastar_A7K1000)
Enterprise Edition PCWorld (http://www.pcworld.com/article/131123-1/article.html)

The 7K1000 performs extremely well in the Anti-Virus and Defragmentation test where its 32 MB cache benefits read operations with results that mirror the PCMark 2005 tests.

The Raptors once again finish at or near the top in our gaming tests due to their rotational and random access speeds. Our 7K1000 drive finishes ahead of the other 7200rpm drives with a great deal of benefit going to the 32 MB cache and high sustained transfer rates. In the RAID 0 results we see the Raptor scores improving 38% in The Sims2 and 55% in BF2. The 7K1000 benefits greatly from RAID 0 in these tests with improvements of 50% in The Sims2 and 90% in BF2 with the Raptors once again showing their strength in gaming.

We need to remember these tests reflect pure hard drive performance. RAID 0 will provide outstanding results in synthetic benchmarks but really does nothing in actual applications.

The overall performance of this drive is excellent and close enough to the WD1500ADFD Raptor drive that we consider it a worthy adversary in most situations. The Raptors are still the drives to own for most benchmarking purposes or those simply wanting the best overall performance in a SATA drive regardless of price or capacity.

We found the write performance and sustained transfer rates to be excellent and class leading in several of our test results. The drive also offers a very balanced blend of performance across a wide variety of business and home applications. The 7K1000 even has the best overall thermal and acoustic characteristics of the high performance 7200rpm drives in our tests.

the drive does not perform as expected in handling large block sizes of data in sequential order. Conversely, the Achilles heel of the Seagate 750GB drive was its inability to handle large files in non-sequential order. Hitachi has overcome this for this most part with a large 32MB cache and from all apparent indications firmware that is tuned with operational balance in mind or even favoring non-sequential read/writes. This is a luxury it can afford due to its cache size and areal density advantages over the other drives in our test group.

We consider the Hitachi Deskstar 7K1000 the best 7200rpm drive we have tested to date.

Specs (pdf) (http://www.hitachigst.com/tech/techlib.nsf/techdocs/67A68C59B27368FC862572570080FC70/$file/Deskstar7K1000_010307_final.pdf)

... it appears the drives will not be widely available for another week or so now.

Raptors in RAID 0 Review (http://www.anandtech.com/storage/showdoc.aspx?i=2101)

ZoneBench Results (http://www.hardmac.com/news/2007-06-19/#6909)

07-10-2007, 09:37 AM
Hitachi 7K200: (http://www.hardmac.com/news/2007-07-10/#6989) Fast, Faster, the Fastest

- Lionel (lionel@macbidouille.com) - 14:20:39

Gilles installed a 200GB Hitachi 7K200 2.5" HD in his MacBook Pro (186 GB true storage capacity once formatted). This drive spins at 7200-rpm and first benchmarks illustrate its performance level:

This drive can reach more than 80MB/s data transfer speed (reading mode).

SR Forum discussion (http://forums.storagereview.net/index.php?showtopic=25527&hl=) of Hitachi 1TB drive.