PERC 5/i RAID Card: Tips and Benchmarks - Page 275 - Overclock.net

ShadowFox19 · 06-30-09

@DJZeratul - What version of the BIOS/firmware are you running on your 6i?

zha50 · 06-30-09

I see alot of fast single sequential transfer speeds in these Raid5 setups.

What i'm intrested in is how fast can a PERC5 in R5 handle MULTIPLE SIMULTANEOUS reads. I find my 4x1tb array, while sustaining 250mb read, it bogs and dies down once i read another file, to a total read speed of about 100mb/s.

Would adding more disks to the array help with multiple sequential reads of large files?

bigstretch · 07-01-09

Hello,

I've been doing a lot of reading on PERC 5I/E cards because I can't seem to get my cards to work.
I tried installing it in my Dell Vostro 410 into the PCI-E 16x slot by using the onboard VGA for video but just started beeping.
Purchased 2 HP xw4300 with 1 PCI-E x16 and 1 x8 (wired 4x) and when I insert the PERC 5i it beeps 5 times pauses 2 seconds and then 5 times again. I did some reading in the HP manual and it means there's something wrong with the memory.
http://godzilla.kennedykrieger.org/fmri/xw4300Setup.pdf

Quote:

Red Power LED blinks five times,
once every second, followed by a
two-second pause.
5 Pre-video memory error 1. Reseat DIMMs.
2. Replace DIMMs one at a time to
isolate faulty module.
3. Replace third-party memory with HP
memory.
4. Replace the system board.

If I remove the PERC 5i and reboot the system, EVERYTHING works great.

I'm hoping someone might have an idea because my next step is purchasing a mobo I know works with a PERC 5i but I don't really want to build another system and spend more money...

Thanks,
BigStretch

bigstretch · 07-01-09

I landed on something that might be my issue...
http://forums.2cpu.com/archive/index.php/t-84882.html

Apparently it doesn't work on all motherboards. But you would assume that a workstation motherboard made to support RAID cards would work?

zha50 · 07-01-09

It maybe that the PCIe16 is a PEG slot and usually only works with graphic cards in them.

My PERC5/i works fine on both my desktop P45 and P35 ASUS boards.

bigstretch · 07-01-09

Ok thanks!

Looks like I'll have no choice but to purchase an ASUS P5Q-E (as it seems to have what I need)

zha50 · 07-01-09

Should be fine. It just most mATX NON Enthusiast boards, WITH onboard VGA have problems with using cards that are not VGA in them. There are exceptions with some Gxx intel chipset boards though.

BLinux · 07-01-09

Quote:

Originally Posted by zha50

I see alot of fast single sequential transfer speeds in these Raid5 setups.

What i'm intrested in is how fast can a PERC5 in R5 handle MULTIPLE SIMULTANEOUS reads. I find my 4x1tb array, while sustaining 250mb read, it bogs and dies down once i read another file, to a total read speed of about 100mb/s.

Would adding more disks to the array help with multiple sequential reads of large files?

actually, my benchmarks were done with at least 2 threads, both writing 12GB in parallel.

http://www.overclock.net/6289493-post2491.html

I've tested up to 60 simultaneous threads and the performance scales within the boundaries of the PERC5/i's capabilities. Bear in mind, I was using a high performance file system like XFS which is very efficient at parallel throughput...

bruestle2 · 07-01-09

I know these RAID cards can handle more than 8 hard drives. I have seen pictures of it. What do I need to do to split the connection up more?

Tator Tot · 07-01-09

Quote:

Originally Posted by bruestle2

I know these RAID cards can handle more than 8 hard drives. I have seen pictures of it. What do I need to do to split the connection up more?

Just different SAS cables.

07-01-09	#2746 (permalink)
bigstretch New to Overclock.net Join Date: Jul 2009 Posts: 3 Rep: 0 Unique Rep: 0 Trader Rating: 0	Ok thanks! Looks like I'll have no choice but to purchase an ASUS P5Q-E (as it seems to have what I need) Last edited by bigstretch : 07-01-09 at 01:37 AM

		Overclock.net - Overclocking.net > Components > Hard Drives & Storage > RAID Controllers and Software
PERC 5/i RAID Card: Tips and Benchmarks

07-01-09	#2744 (permalink)
bigstretch New to Overclock.net Join Date: Jul 2009 Posts: 3 Rep: 0 Unique Rep: 0 Trader Rating: 0	I landed on something that might be my issue... http://forums.2cpu.com/archive/index.php/t-84882.html Apparently it doesn't work on all motherboards. But you would assume that a workstation motherboard made to support RAID cards would work?

Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)