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ap0calyps

Adaptec HostRAID performance, anyone?

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It's the fastest RAID 0 controller I have come across, but it's still nothing special. Doesn't scale well at ALL compared to IDE RAID.

For example, a single 120GXP IBM drive sustains lets say 30MB/s, so in theory a pair of them in RAID 0 should sustain 60MB/s. With IDE RAID you get pretty close to that. Add a 3rd drive, 90MB/s.

With the 39320R, single X15-36LP sustains 55MB/s, so a pair in RAID 0 should sustain 110MB/s, and it does. Now when I add in a 3rd X15-36lp you would expect transfer rates to go up by roughly 55MB/s, but they DONT. ATTO benchmarks increase about 10MB/s. Same with PCMark and Sandra.

So I wasted $500 Cdn on a 3rd drive for NOTHING because NOBODY seems to be able to do SCSI RAID 0 properly.

Are you running on a 32bit PCI bus?

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I have both the 29320-R and 39320-R and they are definately fast.

I can categorically state they both do Raid 0, Raid 1 and Raid 10 with upto a maximum of 4 disks (per channel for the 39320).

Using 2 x 3 x 15.3 Raid 0 software striped (you can't raid across the channels :( ) ie 6 disks. I get >400mb/s at the start of the disk and >330mb/s at the end. Atto gives upto about 360mb/s.

Is that fast enough? Access time is <6ms. If anyone wants benchies I can email em as I can't host em currently.

Steer clear of zero channel raid tho' - its performance is ****.

Gandelf

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They support RAID10? In the online-manual for the HostRAID (?) it doesn''t say so. Nonetheless, that would be great but not too bad if it doesn't. :)

Is it possible to hook up my old SCSI-Scanner at the external port and at the same time run a few HDDs, utilizing th 29320? Or will the scanner (EPSON) slow down everything?

What about attaching UW (40MB/s) and 320er HDDs - will everyone work at its maximum speed or all at 40MB/s.

Sorry if I'm blind and that's somewhere in the FAQ, I cannot seem to find it. :cry:

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Results with 4 cheetah 15k.3 drives on a 29320LP-R controller:

ZD WinBench 99 Version 2.0

Disk Inspection Tests:

Transfer Rate, Beginning: 245000 kb/s

Transfer Rate, End: 204000 kb/s

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... and no RAID 10 :-(

Adaptec says they MIGHT implement it in a later BIOS release, but not yet.

I was very disappointed, because the current BIOS got a RAID 10 option - which is disabled.

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I've just purchased the 39320 and have it on my mobo right now. Waiting for a psu in the mail.

My setup is as follows:

Supermicro x5dal-g mobo

2x 2.4xeon 533fsb

1gig reg ecc ram

ati raedon 9700 pro

creative audigy 2

toshiba 40x cdrom 50pinscsi

yamaha 16x10x40 cdrw 16mb buffer 50pinscsi

2 x seagate 10k u160 36lp 36gig hard drives

adaptec 39320-R hba

This will be on a clean install of win xp pro.

I'm willing to be a guinea pig for any tests/setups!

!!CAUTION!! Newbie on the field! I just started a thread on how to deal with the scsi hardware setup actually!

System should be up and running by Wednesday of next week.

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What are you using to run the 50 pin optical drives?

You didn't ask me, so sorry for jumping in.

I have a 29320 and on my card there is a 50-pin header. With SCSI-320 devices on the internal LVD connector and Ultra SCSI devices on the 50-pin header, things still initialize at 320 levels for the LVD devices.

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I had a look, and while the 29320-R has a legacy 50 pin connector, the 39320 series doesn't. So looks like he'll need a 68pin->50 pin converter.

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I had a look, and while the 29320-R has a legacy 50 pin connector, the 39320 series doesn't. So looks like he'll need a 68pin->50 pin converter.

Ewwwww ... blech

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I had a look, and while the 29320-R has a legacy 50 pin connector, the 39320 series doesn't. So looks like he'll need a 68pin->50 pin converter.

Youre right Pradeep, I will be forced into using an adapter.

I agree with you boggsie, but I already had the optical drives. After I get over the shock of spending the money from the rest of the setup, I will look for more recent hardware. Baby steps! :D

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Interesting review. Especially the increased STR using RAID 1 on the Tekram.

There is a small typo I think, in the first two graphs:

Tekram DC-390U3B - IM RAID 1 - 2x 10K.6

Tekram DC-390U4B - 1x 10K.6

I assume the 390U3B should be 390U4B?

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The 29320 and 39320 look like they have very good RAID 0 performance.

But I don't think they will do RAID 10, only either RAID 0 OR Raid 1.

Correct. they will not support raid 0+1 (or any mode other than 0 or 1)

I had an opprotunity to talk to adaptec tech support last week because 29320 card was not playing nice in a new system I was building... Ive recently had a chance to test a LSI U320 card, and liked it much better...

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