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PERC 5/i RAID Card: Tips and Benchmarks - Page 463

post #4621 of 7178
Quote:
What do people use to manage their Perc 5/6 inside Windows?
Dell OpenManage 6.3 for ESXi ... I haven't tried it in Windows.

LSI MegaRaid Storage Manager for Windows 2.35-01 for Windows Server 2003 and 2008.
post #4622 of 7178
In case anyone was wondering, going from a 4x2TB RAID5 to an 8x2TB RAID6 takes about 2 and a half days. Mine took 40.5 hours for the reconstruction wizard to finish and 11.5 hours for background initialization to finish. You can still access your data while this process is being carried out, but it will likely lengthen your total reconstruction time. I accessed some files from this particular drive on multiple occasions during this rebuild process, but in total most of the time was spent sitting idle.

On a windows box, when the RAID is done reconstructing and initializing, you need to restart the computer for Disk Manager to see the extra unallocated space. Then using Disk Manager in Vista/7, Partition Magic (or gparted boot cd), etc you can extend your partition into the unallocated space. So if you do a reconstruction and you cant see the extra space, don't freak out until you restart.
Edited by DJZeratul - 10/5/10 at 3:54am
    
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post #4623 of 7178
Whee! My Perc 6/i arrived in the mail today!
I insulated the pins for the SMBus issue and strapped a small fan on the processor heatsink.

Now I just need money to get some HDD's to build the array.
Thanks for everyone who has contributed to this sticky.
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post #4624 of 7178
Quote:
Originally Posted by binormalkilla
Either way this is going to be one badass array. You better post some benchmarks here when you get done!
I purchased 6 WD20EADS (22R6B0 23-JUN-2010, 00R6B0 12-JUN-2010) from Newegg. All drives were able to have TLER enabled to 7 seconds and had the WDIDLE3 utility run on them to have spindown disabled. An 8TB RAID50 was created for testing with a 128 KB stripe, Disk Cache Policy enabled, Write Back enabled and Adaptive Read Ahead enabled.

I've attached the the 4K and 1MB HD Tune Results.
4KB Read Average: 107.4 MB/s
4KB Write Average: 202.9 MB/s
1MB Read Average: 300.6 MB/s
1MB Write Average: 215.2 MB/s

They don't seem great to me given other posts I've seen, but I'll let others judge. If anyone has any suggestions on setting changes I'd be interested to hear them.
LL
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post #4625 of 7178
Quote:
Originally Posted by porpoisehork View Post
I purchased 6 WD20EADS (22R6B0 23-JUN-2010, 00R6B0 12-JUN-2010) from Newegg. All drives were able to have TLER enabled to 7 seconds and had the WDIDLE3 utility run on them to have spindown disabled. An 8TB RAID50 was created for testing with a 128 KB stripe, Disk Cache Policy enabled, Write Back enabled and Adaptive Read Ahead enabled.

I've attached the the 4K and 1MB HD Tune Results.
4KB Read Average: 107.4 MB/s
4KB Write Average: 202.9 MB/s
1MB Read Average: 300.6 MB/s
1MB Write Average: 215.2 MB/s

They don't seem great to me given other posts I've seen, but I'll let others judge. If anyone has any suggestions on setting changes I'd be interested to hear them.
So how did you enable TLER? I've only briefly read on the subject.....

Looking good so far though. Your results are about right considering that my 5 drive WD Caviar RAID5 is a little slower....here are my results in Windows 7 from some time ago. I've since reformatted to ext4.

I also have an 8MB block size test if you want to run that for comparison. I ran all of these with the accuracy slider to the max.




EDIT:

It looks like you're taking quite a hit on access time. Maybe you should see how RAID5 performs and compare the two.
LL
Edited by binormalkilla - 10/11/10 at 8:20pm
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post #4626 of 7178
Quote:
Originally Posted by binormalkilla View Post
So how did you enable TLER? I've only briefly read on the subject.....

EDIT:

It looks like you're taking quite a hit on access time. Maybe you should see how RAID5 performs and compare the two.
WDTLER.exe can be downloaded on the internet in a ton of places. WD no longer offers it because people use it on their non-RAID Edition drives. You just create a DOS bootable disk and copy the utility to the disk and then run it on a clean boot. Some drives don't support enabling TLER, and if they don't it can't even read the setting off of the drives. It's actually really easy.

Great catch on the access time. I'm in the process of creating a new RAID *groan* ... I'll report back when I'm done. I should have tested more before copying all my data to it .
post #4627 of 7178
hey guys,

I just got my Perc 6/i too . I am about configure it with 4 X 2TB Hitachi drives in Raid 10. I will be using this setup mainly to save backup images of computers, pictures and home videos and important documents.

So what stripe size should I use? Also, what other setting should I enable/disable/change for optimum performance and stability? I am new to RAID

Cheers
post #4628 of 7178
Quote:
Originally Posted by porpoisehork View Post
An 8TB RAID50 was created for testing with a 128 KB stripe, Disk Cache Policy enabled, Write Back enabled and Adaptive Read Ahead enabled.
Switch to RAID10 or RAID5 and see what your benchmarks look like.

Also do you have a battery? If so, and you are running in write back, you should disable the disk caches. You may also be better off if you disable NCQ and select either always or never read ahead, but this will depend on your exact usage patterns (and a benchmark won't really help here either).
post #4629 of 7178
Hey Guys! I just got a dell perc 5i card off ebay to put into the esxi server that I've built. I will try to get some pics up later this week. This forum has been super helpful in getting the card "modded" for the cooling. Still waiting on one fan from newegg before I go live and start really testing with it. I hope this is ok, if not I'll remove it but I saw some guys linking to cables and such to help out. I found some on ebay that were super cheap and worked perfectly. I bought 3 just in case one was bad. Got 3 for 15 shipped.

http://cgi.ebay.com/NEW-MOLEX-1m-3-f...item1c15f08974

Disclaimer: They are 3 feet in length so they are super long. I have an NZXT Whisper case which is a full tower and I still have extra cable. But for the price and the flexibility in length I thought it'd be good to share with you guys. The cables were fully functional as well.

Also I had to change on setting to get it to be recognized in the x16 slot of my ASUS M4A785TD-V EVO motherboard. In the bios setup you have the setting for Primary Video Controller which allows you to set the primary video controller. The default is [GFX0-GPP-IGFX-PCI] and with that setting it did not recognize the card in the bios or in bootup. After I changed it to recognize the integrated graphics first (IGFX) [IGFX-GFXO-GPP-PCI] it was recognized on bootup.

----edited----

I added pics of my set up below. I added a zalman northbridge heatsink and removed the stock one. I modified a large paper clip to hold it down on the chip with the thermal grease applied. I then clipped the ends of the stock sink and used arctic silvers thermal epoxy and applied it to the additional chip as well. The picture of the case should give you an idea of the length of the cables as well. I'm waiting on this pci fan to put forced airflow across both of the heat sinks. I'll have it tomorrow!

Titan PCI Slot VGA Fan
LL
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Edited by sam24and48 - 10/12/10 at 5:26pm
post #4630 of 7178
Quote:
Originally Posted by porpoisehork View Post
WDTLER.exe can be downloaded on the internet in a ton of places. WD no longer offers it because people use it on their non-RAID Edition drives. You just create a DOS bootable disk and copy the utility to the disk and then run it on a clean boot. Some drives don't support enabling TLER, and if they don't it can't even read the setting off of the drives. It's actually really easy.

Great catch on the access time. I'm in the process of creating a new RAID *groan* ... I'll report back when I'm done. I should have tested more before copying all my data to it .
Cool, I'm going to format a bootable DOS flash drive and get it going tonight.....however enabling TLER on an already active array won't cause any problems, right?

EDIT:
Apparently it's fine to a enable TLER on an existing array, just as I suspected:
Quote:
Update: (2008-09-15) As an answer to some of the posts. Enabling or disabling the TLER settings on your hard drives will not decrease speed or performance and it will not cause you any data loss and you will not have to recreate your arrays or reformat your drives. Changing of the setting is invisible to the system and can be switched without any changes, damage, or problems.
http://hardforum.com/showthread.php?t=1285254

I just formatted my USB drive so now it's time to check it out....

I used the archive from that hard forum link and it didn't detect my drives.

Porpoisehork did you connect the drives via SATA to enabled TLER, or were you able to do it via SAS?
Edited by binormalkilla - 10/12/10 at 3:54pm
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