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PERC 5/i RAID Card: Tips and Benchmarks - Page 239

post #2381 of 7174
Thread Starter 
Quote:
Originally Posted by ara View Post
I would just like some advice on SAS drives. I might be able to get a couple. Also I'm getting the Perc 5/i with two cables. Is the SATA cables compatible with SAS? i.e. Will I be able to run 6x1TB in Raid 5 plus 2x300GB SAS in Raid 0 or Raid 1 on this card at the same time? I'm battling finding decent information on SAS.
There are different SAS connector types: http://en.wikipedia.org/wiki/Serial_...CSI#Connectors

The PERCs have two SFF-8484 plugs. Since SFF-8484 isn't SFF-8482/SATA, a standard SATA plug will not work.

You can run 5xRAID5 + 2xRAID0 fine. However, I am not sure if the card will support SAS and SATA in mix mode though. Especially if on the same port.
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post #2382 of 7174
Quote:
Originally Posted by DuckieHo View Post
There are different SAS connector types: http://en.wikipedia.org/wiki/Serial_...CSI#Connectors

The PERCs have two SFF-8484 plugs. Since SFF-8484 isn't SFF-8482/SATA, a standard SATA plug will not work.

You can run 5xRAID5 + 2xRAID0 fine. However, I am not sure if the card will support SAS and SATA in mix mode though. Especially if on the same port.
I modified my 3 SAS drives to fit on the sata connector and had one sata drive of a 5 drive raid5 array and it worked.
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post #2383 of 7174
Thread Starter 
Quote:
Originally Posted by ounderfla69 View Post
I modified my 3 SAS drives to fit on the sata connector and had one sata drive of a 5 drive raid5 array and it worked.
So it does work with mix drives?
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post #2384 of 7174
Sweet...thanks for the tips/confirmation guys...time to test it out..
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post #2385 of 7174
Quote:
Originally Posted by ounderfla69 View Post
I modified my 3 SAS drives to fit on the sata connector and had one sata drive of a 5 drive raid5 array and it worked.
How exactly did you do this if I may ask. Does it do anything to the performance?
post #2386 of 7174
I also intend to use SAS drives, but don't want to mod them.

I hope to use this type of cable to attach the drives (note - cheaper ones are available - this was the best link I could find. Prices are similar to the SATA versions, just search for "SFF-8484 to SFF-8482 cable" & something should come up).

SAS connectors will work on SATA drives, but SATA connectors do not work withough modification on SAS drives (as I understand it).

With the above cable you should be able to attach either SAS or SATA drives to the PERC. You can mix types, but only in separate Virtual Drives (no mixing SAS & SATA in 1 RAID volume).
post #2387 of 7174
Hi all,

Well I thought I'd post some benchmarks of my perc5 raid array as it seems to be performing nicely now that all the mbr/gpt partition size stuff has been sorted.

PC Specs are:
Quad core Q9400, 4GB DDR2, P5QL-EM motherboard, Dell Perc5/i with BBU and LSI 7.0.1-0066 firmware, Windows Server 2008 Standard x64 and latest megaraid drivers.

RAID Controller is set to: Adaptive read/write back/cached io
Array is made up of five 1TB Western Digital GreenPower - three of them bought recently and 32MB Cache drives (WD10EADS) and two of them older 16MB Cache drives (WD10EACS). It's configured as one big 3.8TB RAID5 array.
Raid stripe size is 64kB and formatted as NTFS with 32kB blocks (as most of the stuff I have on it is media)

HDTune reports the


I've taken some screenies of the LSI MegaRaid Storage Manager software for windows if anyone is interested.
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post #2388 of 7174
i believe i read it somewhere....but when you do a soft reset...the card is no longer detected until you do a hard reset right?...was there a fix for this or is it just how it is...
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post #2389 of 7174
Quote:
Originally Posted by the_beast View Post
I also intend to use SAS drives, but don't want to mod them.

I hope to use this type of cable to attach the drives (note - cheaper ones are available - this was the best link I could find. Prices are similar to the SATA versions, just search for "SFF-8484 to SFF-8482 cable" & something should come up).
on eBay you can find it cheaper: Serial SAS 32-PIN to 4 SAS 29-PIN + 4-PIN Power Cable
Edited by RobiNet - 5/5/09 at 8:03pm
post #2390 of 7174
I have a question:

I just installed one of these cards in my MOBO (SuperMicro X7DBE). I am running on WinXP32bit. I have four 750GB HDs attached to the card. I was able to install and initialize the card, but the unit does not show up in "My Computer". Neither it does in "Disk Management". It does show in the "Device Manager" as another hard drive.

In other words, the device seems to be installed but i am unable to access it.

Do anybody knows any solution for this problem?
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