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PERC 5/i RAID Card: Tips and Benchmarks - Page 566

post #5651 of 7150
I have bench'd the single disc and it has a sequential read of ~120MB/s. Totally wrong that a single has WAY more perf than the raid5 array (both logical units are on the same card so)...
post #5652 of 7150
Hi,
I'm having some problems with 4x Seagate st2000dl003 in raid5 on a PERC 5i. They are all working perfectly fine, apart from every time I reboot the machine, I have problems with 1 or 2 of the cards not getting detected! Each time this happens I have to reboot until all disks are detected, and then it requires me to re-import the disks and background initialize which takes 8 hours. Sigh!

Any ideas much appreciated. I'm using the latest Dell firmware.
post #5653 of 7150
Quote:
Originally Posted by flacoramos View Post
I have bench'd the single disc and it has a sequential read of ~120MB/s. Totally wrong that a single has WAY more perf than the raid5 array (both logical units are on the same card so)...
Do you have enough airflow around the card to cool it properly?

Can you try to test drives as RAID 0 or RAID 1 ?

Do you have enabled drive's cache ?
post #5654 of 7150
somebody can tell me the perc5i cpu heatsink size?
the 40mm (L) x 40mm (W) x 10mm (H) cooler good for it?
post #5655 of 7150
I had a 40mm x 40mm fan on my stock heatsink before I changed it.
post #5656 of 7150
Okay, I'm stuck, dont know what to do anymore..

I recently built a new filserver with perc 5i as controler card, at first everything worked like a charm. The system were up and running for about a week w/o any problems at all, one morning i found it in BSOD, diddent think that much about it, that happends in windows I guess. It ran on for another 2 days or so and it BSOD again, rebooted, worked for another day. Up until today, where i got 4 BSOD. Now I cant boot the system, it get stuck on "Starting Windows" just sits there forever.

If i diconnect the perc card everything works perfectly. I really dont know what to do to solve the problem. It's running the latest firmware, all hdds conected seems fine, it got forced airflow.. Only thing i havent tried it covering pin 5 o 6 on the controler card. Think that would help me at all? :/

I'm somewhat pissed atm since i can't figure out wth to do.



Thanks..

Update: Hrm, after 20min of "Starting windows" it all of a suden started up.. Strange! Still, how on earth should i get the system stable? Pritty sure it's going to BSOD again..
Edited by vickos - 9/16/11 at 6:13am
post #5657 of 7150
Hello all,

I got a PERC 5i about a month ago on the recommendation of a co-worker, and have been reading through parts of this thread. I finally had the time this week to get it together. At the moment, I have 3 Hitachi 1.5tb drives in raid 5 on it. In the perc bios I was able to create the raid 5 array, initialize it, and run a consistency check on it without a problem. The card sees all 3 of my 1.5tb drives, and reports the volume correctly as 2.7tb. My motherboard bios sees the perc as a SCSI device under the list of hard drives. However, in windows I can't see my array at all. I can see that the drivers for the perc are installed, and there is also a listing for an "LSI virtual device or drive" (working off of sleepy memory here,) and I could also see a SCSI drive listed, although it was with unknown generic drivers. This was using WHS 2011. Disk management doesn't show the array, even as unallocated space. I couldn't find updated drivers (Dell's support site is pretty arcane,) so I made a late-night choice to try Windows 7 instead, just in case it was a problem with WHS 2011…unfortunately, it didn't work there either.

Does one need to install any additional drivers or utilities to get the array to show up? I get the feeling I am just missing something, but at that point I had stayed up way too late and forced myself to go to bed. I'm pretty sure the problem is not the cables since I can actually see the drives in the perc bios.

My motherboard is an older Asus M2A-VM, unknown bios. The firmware on the Perc is not the most current, it ended in 60.

Thanks all!
post #5658 of 7150
I have just built my new server and after running a benchmark on my RAID 5 i was disappointed, Or is this all i get?

Running 4 Seagate Cheetah 15K RPM drives in RAID 5 on a Perc 6i with BBU
Write Back and Read Ahead is on.

post #5659 of 7150
Quote:
Originally Posted by zoddan View Post
I have just built my new server and after running a benchmark on my RAID 5 i was disappointed, Or is this all i get?

Running 4 Seagate Cheetah 15K RPM drives in RAID 5 on a Perc 6i with BBU
Write Back and Read Ahead is on.

In reality you have 3x drives for data + 1 drive for parity - so as the drives are probably 100-120MB/s - 300MB/s is more or less OK, I think
What is the full model number of the drives ?

Try to benchmark your server with CristalDiskMark with 500MB sample.

Do you have OS installed on the same physical drives ?
post #5660 of 7150
The model is ST373455SS

Yes i have 2008 R2 on those drives.


Edited by zoddan - 9/19/11 at 2:48am
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