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PERC 5/i RAID Card: Tips and Benchmarks - Page 467

post #4661 of 7150
Quote:
Originally Posted by insanity213 View Post
In short, I have a Dell PE2950 w/ a 5i inside of it. I assume that its the integrated model (being that it came with the server and has the backplane and all). Can I flash to the LSI firmware to this card and do I want to? I don't need to interop with another motherboard because I'm in a Dell server so there's no benefit there, but would I get some performance bump by using the LSI firmware?
The Dell card uses a custom Dell bootloader and this can cause 'warmboot' problems ... see the first few pages of the thread where this is discussed and see if this is something you possibly want to deal with. I have a 2950 as well. I would not flash the LSI firmware given the 2950 is designed to work with the card the way it is, but ymmv.

Quote:
Originally Posted by insanity213 View Post
Also, I planned on using 4k sector drives. As long as my stripe size and partition starting points are all in multiples of 4 I should be in good shape, correct?
I have used 4K drives (WD15EADS) and 512k drives (WD20EARS) which have the same performance specs and gave pretty much the same benchmarks in HD Tune. I thought the 4k drives were giving me performance issues at one point if you run across that thread, but I actually had to replace the MB. As far as aligning them, I have no idea how you do that through the Perc since it creates and manages the partitions for you. However, I've had no performance issues that I can tell, so it may be doing it correctly.

I would suggest you look at disabling TLER and Drive Parking if possible with the drives you buy (those are Western Digital terms, other manufactures user other terms). I didn't disable drive parking and used 60% of the rated Load Cycle Counts in 5 months of operation. See this post for links.

I'm not in any way suggesting WD drives. Though I've had no issues with the RAID 5 of WD15EARS (can't enable TLER), a friend and I bought 14 WD20EADS and 5 were bad. People in this thread seem to really like the Samsung Spinpoints, and they have great ratings on NewEgg, but I'm not sure if you can disable head parking / TLER with those.
post #4662 of 7150
Anyone tried to mix EADS and EARS drives on a 5i?

If so, would the EARS drive need to have 7-8 jumpered?
post #4663 of 7150
Quote:
Originally Posted by insanity213 View Post
Hey everyone,

This thread has been great - perhaps too great. There's a whole lot of info in here so I'm still a bit confused on card revisions and firmwares.

In short, I have a Dell PE2950 w/ a 5i inside of it. I assume that its the integrated model (being that it came with the server and has the backplane and all). Can I flash to the LSI firmware to this card and do I want to? I don't need to interop with another motherboard because I'm in a Dell server so there's no benefit there, but would I get some performance bump by using the LSI firmware?

Also, I planned on using 4k sector drives. As long as my stripe size and partition starting points are all in multiples of 4 I should be in good shape, correct?

Lastly, I've been pretty happy with Ubuntu lately on my desktops, but it seems Redhat/Centos has the easiest to install utilities for these cards. What OS would you guys recommend? I need this thing to be stable and can't be bothered compiling custom apps, kernels, modules, etc...
stay with the Dell firmware; you'll be a happier person since you're in a Dell server anyway. the Dell PERC5/I is not 100% the same card as the LSI reference design; Dell owns the intellectual property of their PERC design, so it is definitely not an LSI design.

don't know if the 4k sectors will work out for you, i haven't tried it. let us know how it goes...

if you just want to get something up and running, stable, and easily install the Dell OMSA tools to manage the server, then stick with RHEL or CentOS, or maybe SLES. Support for Ubuntu is getting better, but it'll cost you a few extra hours trying to find "work arounds" for a few issues...
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TAIPEI
(10 items)
 
AURORA
(13 items)
 
 
MotherboardGraphicsRAMHard Drive
ASRock X99 Extreme11 EVGA GTX 980 Superclocked 32GB 8x4GB Corsair LPX Samsung XP941  
Hard DriveCoolingOSMonitor
Western Digital 3TB RE Noctua NH-D15 Fedora 21 Linux Samsung S27D590C 
PowerCase
Seasonic SS-1200XP Cooler Master Cosmos II 
CPUMotherboardGraphicsRAM
Dual Quad-core L5430 2.66Ghz 12mb cache Intel 5000 chipset ATI ES1000 64GB FBDIMM DDR2 PC2-5300 667Mhz 
Hard DriveOSPower
WD3000FYYZ PERC H700 w/ 512MB cache CentOS 7.2.1511 950W x2 
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post #4664 of 7150
Quote:
Originally Posted by roche View Post
Anyone tried to mix EADS and EARS drives on a 5i?

If so, would the EARS drive need to have 7-8 jumpered?
Yes, with very bad results from what I've read, though I don't remember if it was here or another forum. Give it a Google and you should find it fairly easy, I found it when trying to pick one of those drive types for the raid.

I didn't jumper my ears array and it's been running great.
Edited by porpoisehork - 10/19/10 at 6:14pm
post #4665 of 7150
I just created a new virtual disk with my Perc 6/i with 4 X 2TB Hitachi Drives in RAID 10, ~4TB usable space. But windows will not see the new virtual drive, Windows XP 32 bit.

Is there a limitation on the max size Windows XP 32 bit can see? Can I do anything to make Windows see my new virtual disk?

Thanks
post #4666 of 7150
Quote:
Originally Posted by diehardfan View Post
I just created a new virtual disk with my Perc 6/i with 4 X 2TB Hitachi Drives in RAID 10, ~4TB usable space. But windows will not see the new virtual drive, Windows XP 32 bit.

Is there a limitation on the max size Windows XP 32 bit can see? Can I do anything to make Windows see my new virtual disk?

Thanks
You will need to create a GPT volume.
http://en.wikipedia.org/wiki/NTFS#Maximum
Quote:
Because partition tables on master boot record (MBR) disks only support partition sizes up to 2 TB, dynamic or GPT volumes must be used to create NTFS volumes over 2 TB. Booting from a GPT volume to a Windows environment requires a system with EFI and 64-bit support.

http://www.microsoft.com/whdc/device...e/gpt_faq.mspx


I've never done this myself so someone else may be able to give you some tips.
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post #4667 of 7150
Quote:
Originally Posted by binormalkilla View Post
You will need to create a GPT volume.
http://en.wikipedia.org/wiki/NTFS#Maximum



http://www.microsoft.com/whdc/device...e/gpt_faq.mspx


I've never done this myself so someone else may be able to give you some tips.
actually, Disk Management does not even detect it, so cannot even convert to GPT volume.
btw, I am not using this array as boot just to store backup images and important files.

But HD Tune sees it and was able to do some benchmarks, but only detects 2199GB which I read other people had the same problem as might be probram bug, not too worried about what HD Tune is seeing for now.
post #4668 of 7150
Quote:
Originally Posted by diehardfan View Post
actually, Disk Management does not even detect it, so cannot even convert to GPT volume.
btw, I am not using this array as boot just to store backup images and important files.

But HD Tune sees it and was able to do some benchmarks, but only detects 2199GB which I read other people had the same problem as might be probram bug, not too worried about what HD Tune is seeing for now.
I'm not sure then....I hardly ever boot into Windows anymore.
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post #4669 of 7150
Quote:
Originally Posted by porpoisehork View Post
Yes, with very bad results from what I've read, though I don't remember if it was here or another forum. Give it a Google and you should find it fairly easy, I found it when trying to pick one of those drive types for the raid.

I didn't jumper my ears array and it's been running great.
If you ever see the thread again or something I'd appreciate it cause I didn't find solid answers.
post #4670 of 7150
Sorry if this was answered before. I've been searching and couldn't find the right info.

I just bought a perc 6i from a friend and it didn't come with the cable/bbu. Can someone tell me if perc 5i bbu/cables are compatible before I order one from ebay?

Also, maybe someone has a good link to a decent priced one?

Thanks in advance!


EDIT:
Finally got the correct part numbers and answered my own question..

BBU PERC5i / PERC6i
http://www.epartsandmore.com/product...roducts_id=326

BBU Cable
http://www.epartsandmore.com/product...roducts_id=263
Edited by vanisher - 10/21/10 at 12:52pm
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