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PERC 5/i RAID Card: Tips and Benchmarks - Page 147

post #1461 of 7149
DJZeratul, many thanks for your suggestions regarding application of the fan. I thought the fan was smaller than 60mm in the pic but I see you've revised it to 50mm. If only I could find a 40mm/50mm fan that has as high a CFM as yours. 50mm ones I'm looking at are approximately 10CFM.
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post #1462 of 7149
Yeah, i wrote 60 accidentally and re-read my post and realized it would be bad advice to recommend such a huge fan lol.

im using this fan:

http://review.zdnet.com/product/cool...e-fan/32507734

i found a couple on amazon for like $2.29 USD

heres one on newegg for 1.99

http://www.newegg.com/Product/Produc...82E16835104007

BUT ITS ONLY ~10CFM
    
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post #1463 of 7149
DJZeratul, thanks again for the info. I can't find anything on Link Depot fans in Australia. I guess they don't normally make their way down here.

The "best" fan I've found, based on size and CFM, is this:
http://cgi.ebay.com.au/ws/eBayISAPI....m=370097711905

What are people's thoughts on it?
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post #1464 of 7149
Noise: 34 dBa

that coupled with its small size will mean its 34 dBa of super high pitched whine. I would advise against it.

Plus its only 40mm so im not sure if you would be able to use zip ties on it. You could easily screw it in to the heatsink though.

check this one out:

http://cgi.ebay.com.au/New-Evercool-...3286.m63.l1177

US based seller but its only $6.50 USD shipped to AU, so its not too bad

10.5 CFM and honestly since intel says its only 4CFM required thats more than double what you need.
Edited by DJZeratul - 3/10/09 at 10:03pm
    
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post #1465 of 7149
DJZeratul, thanks again! The sound won't be too annoying as it'll be stuck on our comms room. However mounting it may be an issue, so I will make a 50mm one my priority.

I was also looking at that fan earlier. If Intel say 4CFM is all that's required, I believe I can live with 10CFM! I might even get a 2nd just in case...

Only drawback, in my eyes, is the lack of motherboard connector on the fan - would be good to monitor and know when it stops operating.
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post #1466 of 7149
i got my perc 5i with bbu off ebay last week, updated it to the latest dell firmware and so far it has been running great. i have it running under ubuntu 9.04 alpha 5 in my storage server with 4x1TB wd caviar black drives in raid 5. os recognized it out of the box which was great - no need for drivers or recompiling kernel. volume is setup with 64kb stripe size, write back and adaptive read ahead with ext4 filesystem, and so far its been great. of course it runs pretty hot so i installed this hsf on the iop chip using arctic alumina thermal adhesive.
http://www.newegg.com/Product/Produc...82E16835103155. i also added a small heat sink on the raid processor.

a few questions:

1. can someone point me to a compatible 512mb stick of ram i can upgrade to?

2. although it works fine under linux, i did notice something which im curious about. like i mentioned, the os recognized it out of the box:

Code:
ar@nas:~$ lspci | grep -i dell
03:0e.0 RAID bus controller: Dell PowerEdge Expandable RAID controller 5
however, i noticed this in dmesg:
Code:
[  441.174932] sd 6:2:0:0: [sdb] Very big device. Trying to use READ CAPACITY(16).
[  441.174976] sd 6:2:0:0: [sdb] 5857345536 512-byte hardware sectors: (2.99 TB/2.72 TiB)
[  441.175030] sd 6:2:0:0: [sdb] Write Protect is off
[  441.175033] sd 6:2:0:0: [sdb] Mode Sense: 1f 00 00 08
[  441.175107] sd 6:2:0:0: [sdb] Write cache: disabled, read cache: disabled, doesn't support DPO or FUA
i'm wondering about the last line specifically - i had set write back and adaptive read ahead in the perc bios, so why would it be saying read/write cache is disabled? has anyone else using a perc 5i in linux seen this?

3. has anyone managed to get dell's omsa software working in linux?
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post #1467 of 7149
Quote:
Originally Posted by fadetoblack View Post
1. can someone point me to a compatible 512mb stick of ram i can upgrade to?
http://www.newegg.com/Product/Produc...82E16820144149

Quote:
Originally Posted by fadetoblack View Post
3. has anyone managed to get dell's omsa software working in linux?
I think the LSI MegaRaid Manager is Java based so you could get that to run on linux easily. Im not sure if OMSA has any advantages over the LSI tool because the LSI tool has worked well enough for me that i didnt install OMSA on the linux box I put a PERC into.

Sorry i cant help with #2, im not running my card on Linux at the moment. The other card on Linux i had never exhibited that behavior.
Edited by DJZeratul - 3/11/09 at 12:47am
    
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post #1468 of 7149
thanks for the reply. i'll check out megaraid manager.

one more question - is it worth flashing to the lsi firmware? are there any advantages using it over the newest dell firmware? i noticed in the first post that some people have had issues using the lsi fw so i decided not to do it.
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post #1469 of 7149
what I noticed:

1. the throughput of the card is less with Dell firmware. Its anywhere between 10-15%.
2. the stripe size is limited to 128k in Dell firmware for raid0 and raid5.
3. the soft reboot doesn't recognize the card some of the times with LSI firmware. No such issue with dell firmware so far.

I moved back to Dell's firmware because I couldn't get the LSI drivers installed. So, it was a weird combo of Dell's bootloader, LSI firmware and Dell drivers! Got rid of the odd man out!
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post #1470 of 7149
Quote:
Originally Posted by DJZeratul View Post
http://www.newegg.com/Product/Produc...82E16820144149



I think the LSI MegaRaid Manager is Java based so you could get that to run on linux easily. Im not sure if OMSA has any advantages over the LSI tool because the LSI tool has worked well enough for me that i didnt install OMSA on the linux box I put a PERC into.

Sorry i cant help with #2, im not running my card on Linux at the moment. The other card on Linux i had never exhibited that behavior.
that stick won't work, i tried it. you need registered (buffered) ecc ram like this.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820134288
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