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PERC 5/i RAID Card: Tips and Benchmarks - Page 269

post #2681 of 7150
Thread Starter 
Quote:
Originally Posted by Dennisjr13 View Post
I attached it to my post if that is of any help.
Try using "Cache IO"

Quote:
Originally Posted by j33pownr View Post
Hey guys I am looking to build a home server using a PERC 5i or 6i under raid5 (3x1T drives) and was wondering what sort of power these cards draw?
A home server generally doesn't need the high performance. You network will probably limit the system before the hard drives (unless you have multiple users hitting the server simutaneously).

The PERC 5/i's power draw is probably around 10-20w. Its Intel IOP333 Processor has a 11w TDP. The RAM uses 2-3w.
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post #2682 of 7150
Sweet...Thanks DuckieHo. I was wanting a shuttle pc which has a pci-e that I can put the perc in and just figured that since the card gets so hot that it used alot of power. I would just need to mod the side of the case for a fan to blow on the card. It would hake a great home theater pc if I can get a quiet fan.

Quote:
A home server generally doesn't need the high performance. You network will probably limit the system before the hard drives (unless you have multiple users hitting the server simutaneously).
For the most part I will have only one PC accessing the files and I agree that I probably dont need the high performance but I am sure there will be times when watching a movie downstairs and someone upstairs needs info from the server. This is why I choose raid5. Higher performance than a standard NAS with redundancy.
As for my network limiting throughput before the harddrives do...I have a netgear gs108 switch. I figure that will be plenty. I dont have 5ssd hdds in raid0. Though that would be cool.
post #2683 of 7150
Thread Starter 
Quote:
Originally Posted by j33pownr View Post
For the most part I will have only one PC accessing the files and I agree that I probably dont need the high performance but I am sure there will be times when watching a movie downstairs and someone upstairs needs info from the server. This is why I choose raid5. Higher performance than a standard NAS with redundancy.
As for my network limiting throughput before the harddrives do...I have a netgear gs108 switch. I figure that will be plenty. I dont have 5ssd hdds in raid0. Though that would be cool.
Since you have a gigabit network, it will probably top out at around 100-120MB/s. Most recent hard drives do 80-110MB/s. In the situation you mention above, the two users will just be reading from the server.... Any RAID5 controller with two hard drives from the last 4 years will be able to do 100MB/s+ reads and saturate the connection. The PERC 5/i main advantage is in RAID5 writes.
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post #2684 of 7150
Im not sure why I was thinking a 1Gb network was 1000MB/s instead of only 120MB/s, duhh (1024/8=128mb/s). Either way I still think this is my cheapest option for hardware raid that can be moved from one computer to the next with relative ease. As well as having alot of expandability for the future.

Thanks for the quick responses DuckieHo.
post #2685 of 7150
Quote:
Originally Posted by Burken View Post
what performance do you have?
Since I have a partition on my volume I can't do the write test, but I ermember being able to write 200 MB/s and I have a read performance of about 200 MB/s too. For mismatched HDD is really decent, before I updated the firmware I was having write speed at 200 BM/s but my read speed was only 80 MB/s, that was deceiving...

I have a BBU and the volume settings are :
Stripe Size: 64 KB (NTFS Formatted to 64 KB clusters)
Disk Cache Policy: Enable
Default Write Policy: Write Back
IO Policy: Cached IO
post #2686 of 7150
i did top out around 80mb but after a week it seems to be limited at 50mb at least transfer from pc to pc....still messing around with everything...
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post #2687 of 7150
Okay, I've built a RAID5 with three 1TB drives and windows is showing it as a 931GB volume...when it should be 1.8TB.
Can someone explain why this is happening?
    
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post #2688 of 7150
Do I need to wait for the VD to initialize before I'll see the full volume at the OS level?
    
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post #2689 of 7150
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Quote:
Originally Posted by ShadowFox19 View Post
Okay, I've built a RAID5 with three 1TB drives and windows is showing it as a 931GB volume...when it should be 1.8TB.
Can someone explain why this is happening?
What does Windows Disk Management report?
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post #2690 of 7150
I have been using my PERC5 card for the last 3 month without problem.

For the last 2 weeks, the card isn't working correctly.

When I boot the computer, the card initialize correctly. But when in Windows, half of the time the drive isn't shown. The other half of the time, the drive is working for 2-5 minutes then the array freeze and Windows eventually drop the drive letter.

I tried to change the PCI-X slot, but only one is working. I just formated (I was on Windows 7, now back to Vista) and same problem again.

There is no problem in the device manager, nor in the MegaRaid Manager (when it work)

If you have any idea, I would appreciate.

Thanks
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