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PERC 5/i RAID Card: Tips and Benchmarks - Page 195

post #1941 of 7172
Quote:
Originally Posted by USlatin View Post
It might be your 400W PSU. You might be pushing it too hard. Just a thought. A better PSU can't hurt anyway.
Thanks, but I think that's unlikely. 400W is more than sufficient for this config, and it was running fine before installing the Perc. In fact, a Highpoint rocketraid was installed and swapped for the Perc. No other changes were made.

In fact, I'm beginning to suspect the mobo. It has an on-board video adapter, which takes memory from the main memory banks. Maybe this causes some conflict with the PCI x16 slot or the Perc.
Edited by microkid - 3/31/09 at 10:45pm
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post #1942 of 7172
Anyone playing with perc6i.
Thank you
post #1943 of 7172
Quote:
Originally Posted by devsk View Post
Did you tape the 5/6 pins for the card to work? If you did, you can not use stand-by mode anymore. It will trigger corruptions because the card will not sleep when vista sleeps.

Try turning every auto-standby feature off.
I'm afraid I wasn't aware of that. I did tape off pins 5 and 6 and indeed frequently put my computer to sleep. The weird thing is that with the Dell firmware, I didn't see any corruptions anymore, even though I didn't change my sleeping patterns .

Would you know if hibernate would work as an alternative to the stand-by mode?
post #1944 of 7172
Quote:
Originally Posted by SockMan! View Post
Could you tell us the exact LSI firmware version you used? It should be something like "7.0.1-00##" where ## is the firmware revision.
I had a look at my firmware archive and save that the name of the ROM file is 7.0.1-0064_SAS_1068_FW_Image_APP-1.12.220-0560. So I guess it's 7.0.1-0064.
post #1945 of 7172
Quote:
Originally Posted by zonique View Post
Would you know if hibernate would work as an alternative to the stand-by mode?
Hibernation involves loading the ram into HD contents then powering the entire system down. Because everything is off it will be functionally the same as you shutting down instead of sleeping (nothing will corrupt if everything is lights out).
post #1946 of 7172
Posted an question a few pages back, seems to have been lost in the process.

I can bench my R5 array at about 200mb/s average.

But once i start TWO pulls from the array to SEPARATE hard disks, the array lags like hell and total throughput drops from ~110mb/s to something like 50mb/s, 25mb/s to each disk.
EDIT: They are pulls of two DIFFERENT files, both a large(>8GB) ISO and MKV.

Im about to pull it down and try a larger stripe size. Currently on 128k, going to 256k.

Settings are
4 disk RAID5
WB, ARA, Cached IO, Disk cache enabled.

0066 LSI firmware.

Anyone got this problem? It issue seems much worse then even a single disk performance.
Edited by zha50 - 4/1/09 at 4:21am
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post #1947 of 7172
below are screens from RAID 5 and RAID 0 run on ICH10R with 4x Hitachi 160 GB old drives - HDS721616PLA380

4KB SectorSize (system), 32KB StripSize (raid), 64KB BlockSize (HD Tach)

RAID 5 is on front of drives - 22 MB from each drive = 89 MB


RAID 0 - after RAID 5 = 476 GB


now is the question ... how much faster will be RAID 5 on PERC 5/i with 512 MB cache and 4 or even 8 of SAS drives - 36 GB, 10K rpm ? 2x, 3x ?

estimated costs:
a) $170 new card + $30 battery with cable + $30 2xSAS cables + $240 for 8x 36GB 10K rpm SAS new drives = $470
b) $130 refurbished card with battery and cable + $30 2xSAS cables + $240 for 8x 36GB 10K rpm SAS new drives = $400

post #1948 of 7172
Quote:
Originally Posted by RobiNet View Post
now is the question ... how much faster will be RAID 5 on PERC 5/i with 512 MB cache and 4 or even 8 of SAS drives - 36 GB, 10K rpm ? 2x, 3x ?

estimated costs:
a) $170 new card + $30 battery with cable + $30 2xSAS cables + $240 for 8x 36GB 10K rpm SAS new drives = $470
b) $130 refurbished card with battery and cable + $30 2xSAS cables + $240 for 8x 36GB 10K rpm SAS new drives = $400
$240 for 8 of them? Which make/model?
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post #1949 of 7172
Quote:
Originally Posted by Manyak View Post
$240 for 8 of them? Which make/model?
on eBay you can find Fujitsu - refurbished - but seller in local store swear that they are new - ST936701SS or MAY2036RC.
post #1950 of 7172
Quote:
Originally Posted by RobiNet View Post
on eBay you can find Fujitsu - refurbished - but seller in local store swear that they are new - ST936701SS or MAY2036RC.
Meh, those aren't that good, not worth the money you'd spend on them. The platter density is way too low, you'd be better off with giant 7200RPM drives instead.
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