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PERC 5/i RAID Card: Tips and Benchmarks - Page 244

post #2431 of 7172
Okay new question about the PERC:

When transferring files from my network share to my RAID-6 array that I made, all of my OS's free memory gets taken. Now heres the kicker, it only happens when I am writing to my RAID-6 array. I can transfer all day and night from my network to my RAID-0 array, or from my Raid 6 array to my RAID-0 array. As soon as I start writing to my RAID-6 array, it just seems like any free memory I have is taken.

Now I understand that this is the disk cache, but why the hell does it use that much memory when transferring a file?

Here's a SS of what I'm talking about:

post #2432 of 7172
Maybe thats my issue at the moment, after doing mass transfers, its cached the **** out of itself and windows sits there stupid. My machine ain't no slouch (PII 920 2.8 QC, 4gb etc)
post #2433 of 7172
I have had my PERC 5/i for about 6 months now and love it. But currently I am having some issues with it.

It has been working flawlessly since I got it up and going, but 2 days ago I had a power outage. The machine has a BBU and the machine wasn't down longer than 20min.

When the machine come back up I didn't think there was a problem until I tried to transfer some files.

The i/o was pathetic. Started logged into the machine and run a few disk performance checks and the the raid was doing about 1.5MB/s. When I am normally used to seeing 150MB/s+. I can access everything on the machine it seems but any i/o on the RAID is terrible.

Everything in the RAID BIOS says the drives are good.

Can someone point me in a direction to try and diagnose the problem? Thanks
post #2434 of 7172
Quote:
Originally Posted by kur1j View Post
I have had my PERC 5/i for about 6 months now and love it. But currently I am having some issues with it.

It has been working flawlessly since I got it up and going, but 2 days ago I had a power outage. The machine has a BBU and the machine wasn't down longer than 20min.

When the machine come back up I didn't think there was a problem until I tried to transfer some files.

The i/o was pathetic. Started logged into the machine and run a few disk performance checks and the the raid was doing about 1.5MB/s. When I am normally used to seeing 150MB/s+. I can access everything on the machine it seems but any i/o on the RAID is terrible.

Everything in the RAID BIOS says the drives are good.

Can someone point me in a direction to try and diagnose the problem? Thanks
due to the failure, perhaps it's doing a consistency check? have you checked the card to see if it is running any processes like a consistency check? if that's the case, you can adjust the resource allocation for consistency checks to something lower (though, the check will then take longer). Or, if when you're not using it, allocate more resources to the check so it can get done sooner while you're asleep.

don't ask me for specific commands on how to check if you're in the windows world. i use the Dell open manage command line tools. the MegaCli tool I'm sure can do the same thing.
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TAIPEI
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post #2435 of 7172
Quote:
Originally Posted by BLinux View Post
due to the failure, perhaps it's doing a consistency check? have you checked the card to see if it is running any processes like a consistency check? if that's the case, you can adjust the resource allocation for consistency checks to something lower (though, the check will then take longer). Or, if when you're not using it, allocate more resources to the check so it can get done sooner while you're asleep.

don't ask me for specific commands on how to check if you're in the windows world. i use the Dell open manage command line tools. the MegaCli tool I'm sure can do the same thing.
I dropped into single user mode in freeBSD and did a fsck and it looks like the thing is back.

It must have been doing what you were talking about and I just didn't give it enough time. Thanks for the help.
post #2436 of 7172
Correct me if I am wrong please...but my card has the latest LSI firmware...when i tried installing the drivers from LSI it wouldn't work. I had to get drivers from Dell to install it. Is this correct or did I do something wrong?
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post #2437 of 7172
i've been using the forum search to see if people are selling these perc 5/i but recently the search tool keeps saying no results found. anyone else have this problem? also, does anyone know if anyone is sell a perc 5/i? i found a listing on ebay but it doesn't come with cables. i'll be using a cosmos 1000 so i think i'll have to buy longer cables anyways.
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post #2438 of 7172
Go to Device manager and open up the array's property page, and there should be a caching option there. If the box saying "enabled advanced performance" is checked, uncheck it. And maybe try without a cache at all.
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post #2439 of 7172
ungx0013: I bought mine from songmin on ebay and very happy with his delivery and the card! I got the cables from him also though and they were pretty long I thought (50cm+ easily) and good quality, plus no waiting around for a DX delivery

iceboi714: don't think there's much difference in the drivers that dell/lsi provide for windows tbh. I have the latest LSI firmware, and mine's still detected as a Dell Perc5/i in windows.
But if you have the LSI firmware then you can install the LSI MegaRAID Storage Manager software which gives you heaps of configurable options.
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post #2440 of 7172
Quote:
Originally Posted by Radix999 View Post
ungx0013: I bought mine from songmin on ebay and very happy with his delivery and the card! I got the cables from him also though and they were pretty long I thought (50cm+ easily) and good quality, plus no waiting around for a DX delivery
LOL I just picked up another one and it was from him too...
I figured out why my transfer speed was so slow...For some reason have both NIC enabled on my main comp slowed it down. I disabled one and the transfer speed shot up. Approx 70MB Write and 80-90 Read from the Server.

These numbers were from vista when i was transferring the files
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