Need help with LSI 9260

T

Transporter_GW

Limp Gawd
Joined
Nov 9, 2006
Messages
288
Hi,

I am runnig the LSI 9260 Raid card with 4 of the corsair X256 and I can only get read of around 240 on HD Tune, Can anyone give me a hand with this issue.

Thanks,
 
Transporter_GW said:
Hi,

I am runnig the LSI 9260 Raid card with 4 of the corsair X256 and I can only get read of around 240 on HD Tune, Can anyone give me a hand with this issue.

Thanks,
Click to expand...

Try the MegaCli "-CfgEachDiskRaid0" option to simulate a JBOD and see if you can localize the problem to a single drive. If not, test different stripe sizes and LD parameters.
 
Gonna need some more information.

What type of RAID are you using? Whats your stripe?

From you have said it seems that your drives are in a JBOD configuration.
You would need to use a RAID0/5/6 across more than 1 drive to see increased speeds.
 
wyldfire said:
Try the MegaCli "-CfgEachDiskRaid0" option to simulate a JBOD and see if you can localize the problem to a single drive. If not, test different stripe sizes and LD parameters.
Click to expand...

Can you explain how I am suppose to simulate it and where do i get the MegaCli, I am new to the the controller area.
 
nitrobass24 said:
Gonna need some more information.

What type of RAID are you using? Whats your stripe?

From you have said it seems that your drives are in a JBOD configuration.
You would need to use a RAID0/5/6 across more than 1 drive to see increased speeds.
Click to expand...

I will post some screen shots late today but it is Raid 0 across 4 SSD
 
Can you explain how I am suppose to simulate it and where do i get the MegaCli, I am new to the the controller area.
Click to expand...

LSI has MegaCli packages for the controllers on their website. You can probably use the WebBIOS to do the same, but it's convenient not to have to reboot every time. I haven't tried the "MegaRAID Storage Manager " but it might do the same thing.

The "simulation" is just the way the drives show up -- independently, like they would with a JBOD.
 
Lsi.jpg


HDTune.jpg


Everest.jpg
 
I think I got it resolved, can anyone give me some input if their is anything else i can do or is that it?
 
That looks about right to me.

Might want to try matching the Stripe, and FileSystem block sizes to see what yeilds you the best real world results.
 
the LSI has an adaptive cache. it is going to learn your usage patterns and adjust to your usage as time goes. it is called a 'learning cycle' in the MSM panel. your best output with that controller is going to be
\
direct i/o
adaptive read ahead
always write back
1mb stripe if you like big benchies, 64k or 128 k for real world performance. i have the same controller with 8 vertex raid o.
do not use hdtune
use iometer and everest for benching hardware raid. most other benchmarks give weird replies as they dont know how to interpret hte cache on the controller.
 
You must log in or register to reply here.
Back
Top