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rhunt000
05-07-2001, 07:34 PM
I have two Quantum Atlas 10K II with 8 MB Cache running off an Orange Micro U2W/Firewire card connected with GD TPO-LVD w/GD Terminator (2015). The RAID 0 was formatted using SoftRaid 2.2.2. I have an XLR8 500 MHz G4 ZIF with 512 MB Ram in a Beige G3. Using QuickBench, I am getting

SR=56.66
SW=47.84
RR=52.24
RW=47.33

These are numbers for one of my 7 volumes. The rest are somewhere around those numbers. Do these sound like everything is working well? What do you think my bottleneck is at this point (if there is one)? I'm wondering if it's the card or my PCI bus speed. Thanks for any help.

Do

magician
05-08-2001, 02:16 AM
i would say that, for OrangeMicro Ultra2 LVD circuitry sharing a bridged board with FireWire on one PCI slot....the fact that it works at all is a bonus. Those numbers are fine, IMO.

rhunt000
05-08-2001, 06:25 AM
Just for the record, with only one drive I was getting
SR=30
SW=26

With a second drive formatted to RAID 0 with SoftRaid
SR=40
SW=36

By just replacing my inexpensive cable with the Granite Digital Cabling
SR=56
SW=50

That is a pretty awesome increase for just changing out a cable. Of course, I don't mean to downplay the importance of the cable, but it was just so easy to do.

tm311
05-08-2001, 06:42 AM
hmmmmmmmmmmmmmmmmmmmmmm............

magician
05-08-2001, 04:47 PM
where did that inexpensive cable come from?

how are you terminating the bus?

rhunt000
05-08-2001, 05:18 PM
I got the inexpensive cable off of e-bay after I got my scsi drive. It has the terminator built in. I guess I'm saying that right.

rhunt000
05-09-2001, 05:20 AM
I guess what I am really asking is do you think the Miles2 would give me another good bump or is my Beige G3 limited somewhere else and maybe I am getting close to the max for 2 drives. Thanks. Oh yeah, are there any tricks to speeding up the write performance? I have "write cache" on.

rhunt000
05-16-2001, 07:06 PM
Well, I have answered my own question. With pure delight mind you. By scrapping the OM combo card and replacing it with the Miles2 Ultra2, I now am getting:

SR=66.2
SW=53.5
RR=65.6
RW=50.8

I actually got up to 70 Read on the extended test (2 MB) and 60 Write (10 MB). My Beige G3 is now humming and I love it! My hats off to the Gurus. You have been incredibly helpful and I am grateful.

Thanks.

rhunt000
05-16-2001, 07:18 PM
Atto ExpressPro Tools reports:

PR=75.2
SR=74.4
PW=62.7
SW=62.3

Sorry, I'm just excited.

Louie
05-16-2001, 11:00 PM
There is certainly something to be said here!

drallen
05-16-2001, 11:40 PM
Do you need some drugs for your whiplash?

Great numbers for 10K drives...

Wow,

Mark

magician
05-17-2001, 12:54 AM
whoo!

and the funny thing is, the Miles2 is really an Ultra2 card....not even Ultra160.

it really is the little card that could. It just performs.

rhunt000
05-17-2001, 09:58 AM
Now I just need to figure out how to turn this into something productive. In other words, I need to make some money! http://macgurus.com/infopop/emoticons/icon_smile.gif

Louie
05-18-2001, 01:11 PM
Think twice before buying Orange Micro SCSI cards.

rhunt000
05-19-2001, 05:37 PM
Ok, I'm hooked. Can anyone share any knowledge with going from a two drive RAID 0 to a three drive RAID 0, as far as Read/Write performance is concerned? Based on my setup, is there an approximate % increase one should see? Thanks.

Richard

magician
05-19-2001, 11:49 PM
that might be an easier question to answer if it is rephrased.

Santilli
05-20-2001, 06:35 AM
I thought this was a thread about Viagra....

gs

rhunt000
05-20-2001, 06:49 AM
Magician:
How do you mean? I've pondered your statement and I keeping hearing popping noises in my head with little puffs of smoke coming out my ears. http://macgurus.com/infopop/emoticons/icon_smile.gif

Santilli:
LOL, not yet, but maybe one of these days. http://macgurus.com/infopop/emoticons/icon_wink.gif

rhunt000
05-20-2001, 09:51 AM
I'm trying to get creative here, but this may be silly. I removed my internal cd rom drive and now a hard drive resides there. Has anyone ever removed the floppy drive from their desktop, slid the cable that was connected to the floppy through the cd bay opening and used it externally? I'm trying to think of a way to free up room for another hard drive. If that makes sense, are there external cases available for a once internal floppy?

Thanks,

Richard

Ton
05-20-2001, 10:14 AM
Dunno about a beige...
I mounted a HD in the bay where once was the floppy drive in a 9500.
Very little space for the cabling though. Never missed the floppy drive.

[This message has been edited by Ton (edited 20 May 2001).]

rhunt000
05-21-2001, 06:30 AM
So based on Santilli's response in the "boot from raid 0" thread, is it true to say that 75 mb/sec is about as fast as I am going to get in my beige? So adding more hard drives won't really help? Is it the controller at this point or the pci bus speed? I thought i read somewhere that you could approach theoretical burst speeds. Anyway, now I don't know what i'm talking about. Well, actually I never did. http://macgurus.com/infopop/emoticons/icon_smile.gif

Thanks,
Richard

Louie
05-21-2001, 11:22 PM
I believe he means sustained rates. I see 120 burst rates in a PTP.

magician
05-22-2001, 07:28 PM
sustained reads will be higher--much higher, depending on how many Cheetahs you throw at the thing, assuming you are running an ATTO UL3D or UL3S.

sustained writes will max between 69-75MB/sec. At least, that has been my experience here, in bG3 with an ATTO UL3D and UL3S. Same thing, it appears, in Yose.

to get beyond 75MB/sec sustained writes, looks like you need a Sawtooth.

rhunt000
05-23-2001, 07:16 AM
What about with the Miles2?

magician
05-24-2001, 12:21 PM
Miles2 maxes out at 40MB/sec sustained writes.

sustained reads scale up nicely beyond 100MB/sec. Sustained writes, however, using one board in a single-channel config, cap at 40MB/sec.

dual Miles2 in a dual-channel config will deliver sustained writes between 69-75MB/sec. Sustained writes scale up, depending on the number and type of drives.

rhunt000
05-25-2001, 08:47 AM
Going from two to four hard drives didn't improve. I can't afford to try out any more. But I'm extremely happy with where I am at. So, no real loss just knowledge gained. It's time to start saving for a sawtooth, 8 cheetah's and an 8 disk burly enclosure! Drool. I will never forsake my beige though. It has a home.