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PERC 5/i RAID Card: Tips and Benchmarks - Page 47

post #461 of 7150
that looks like its on the ONBOARD controller.. maybe soemthing against the PERC 5/i setup?


BTW GUYS BENCHES FROM ME WILL BE UP TONIGHT! I am nearly done wiring my case!!!!


HD Tune,
HD Tach,
Everest utilities

anything else?
    
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post #462 of 7150
Just got the rest of parts in for my new file server after getting the issues with the cables for the 5/i sorted last week. Card works fine on a G31 chipset (no pin mod). Running a Celeron 430 (woo 35W TDP) on a Gigabyte GA-G31M-ES2L board with 2GB of ram, an oooold 40GB IDE drive for the system (Server 2k8 Standard) and 3x 1.5TB Seagate drives for the RAID5 array. Following are the benches with the stock Dell firmware, 128K stripe, Adaptive Read Ahead and Write Back turned on:



And for grins, this is the 5+ year old server it's replacing, 12x200GB drives (11+1hot spare) in RAID5 on a 3Ware 7506-12 on a SuperMicro Serverworks based board with 2x P3 1.0ghz, 768MB ram, and a U320 9GB boot drive:
post #463 of 7150
Hey guys,

First, let me say this is a great thread with many helpful info on this card, helped me a lot so far

but now I need further help...

Recently I purchased the Dell Perc 5i along with 4 WD 640AAKS drives.
I am using the "good" old DFI Lanparty NF4 Ultra (until future upgrade).

I flashed the card to the latest LSI (v60) Firmware.

Now, the thing is I can't get the board to identify the controller once I set the two main (the X16 size) PCI-E ports to 8X/8X mode.
it is some sort of SLI mode for those who know/knew the board.
I tried the Pin 5/6 trick but to no avail.
The only two methods I managed to get the MB to identify the controller is when the PCI-E ports are set to X16/X2(or it is X1).
So at the beginning I got my VGA card using the X16 port while the Perc5i was chucked full on the X1, HDTach was showing a flat line on the 150 MB/s.
so now I switched the slots and the VGA card is stuck with a PCI-E X2 bandwidth while the card gets all the X16 bandwidth

Anyone has Ideas regarding this ?

And another thing:
performance wise, I ran different setting of the card and it seems to be a bit slow, for instance:
Raid0 with 64K stripe and Adaptive read ahead, i get a flat line around 275 MB/s.




Why is it flat (should be a curve) and why only 275 mb/s when I know 4 of these drives can get more than 400 MB/s at the top and should get around 350 on average.
Am I missing something ?
128K stripe gives better results for both Read and write, what are the cons and pros of using bigger strips like 128/256 ?
I set the array using the LSI MegaRAID Storage manager from Windows, if it matters anything.

Another strange issue regarding different test results: HDTune Vs. HDTach.
I am using Windows XP Pro SP3 with the latest LSI drivers.
with HDTune I get lower read speed and lower access times.
in HDTach I get higher reads but with higher access times.

Here is an example of two benches using the same Array settings:

HDTach (Long Bench):




HDTune (64K)
:




Again, your thoughts/ideas are more than welcome.
Edited by The-Fox - 10/25/08 at 3:58pm
post #464 of 7150
Has anyone tried the Perc 5/i with the basic solid state drives? (OCZ Core, Master Drive OX, etc...) They don't support AHCI which some RAID controllers don't like, and I believe they report themselves as removable, which freaks out some controllers.

I know for sure at least one LSI SAS RAID chip that doesn't work with them (says wrong disk type) but it was older, not the modern ones.
post #465 of 7150
toasted my mobo.. chipped my nb

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post #466 of 7150
Quote:
Originally Posted by DuckieHo View Post
The maximum support memory is 512MB.


For benching, I will be using 3 74GB Raptors. I will compare the PERC 5/i against a SB700. I would do it against a ICH9R but I don't have a spare drive to install an OS. I plan to use the same OS and bench the arrays in RAID0 and RAID5.


BTW, the CPU is ridiculously hot. I need to figure out how to get a better HS on it.
Duckie thx for the great info and review, +rep. Did you try 2x Raptors in RAID0 and run Vista on it? If so, how's it running for you? I kept getting crashes, disk errors with 2x VR's in RAID0 with mobo setup....someone said a RAID controller card will resolve that, is that true?
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post #467 of 7150
Quote:
Originally Posted by XFreeRollerX View Post
toasted my mobo.. chipped my nb

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That blows... You sure your rig gonna be up for the after Thanksgiving LAN party?
    
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post #468 of 7150
Here are a couple benches from me. My array is 5x300Gb SATA1 RAID 5, 64K block size. These drives are quite old now. Maybe 3 years old now.

I will also explain that Vista was running from the array, and I feel that always cripples benchmarks.

Here is a bench mark with the controller in CachedIO mode.


Here is one with the card in DirectIO mode.


Also, I have this card in a PCI-e x4 slot.

After X-Mas I'm getting 5x1Tb Samsung Spinpoint F1's.
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post #469 of 7150
Quote:
Originally Posted by legoman786 View Post
That blows... You sure your rig gonna be up for the after Thanksgiving LAN party?
I have EAR Premium (EVGA Advanced RMA Premium service) they ship me a new board first, gets here in ~1 week and i send them the old one within 1 month.. Ill be totally fine for the LAN.. im pissed cuz I am on the folding team - this will mess up our November month in competition
    
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post #470 of 7150
What settings do you guys have for consistency checks etc? I have turned mine off but do manual scans every now and again. I don't really care for my pc doing anything without me telling it to LOL. How about if a hd dies? will i get notified etc or will i just be running in scary mode till i log into the megaraid storage manager and see it?

PS
I will be adding hds soon, do you guys think it is best to add 1 hd at a time or add all 4 in one bang? If adding more then 1 at a time is even possible, i dont know.
If i do 1 at a time i would have enough storage to backup atleast for the first couple added hd's
Edited by JustusIV - 10/27/08 at 2:24pm
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