1
vote
2answers
307 views

HP Smart Array P822 w. Dual D2700 - cabling for best performance

Reading the D2600/D2700 User guide, there's a section called "Cabling examples", but none of the examples match what we intend to do. I just want to make sure that it makes sense, before we do it. ...
5
votes
1answer
4k views

HP DL380 G7 + Smart Array P410i + sysbench -> poor raid 10 performance

I have running system with low IO utilization: HP DL380G7 ( 24gb RAM ) Smart Array p410i with 512mb battary backed write cache 6x SAS 10k rpm 146gb drives in RAID10 Debian Squeze linux, ext4 + LVM, ...
3
votes
3answers
1k views

Large disk queue length

A few days ago disk on my server started to have large queue length: I've changed controller battary recently, HP configuration utility was saying the battery is bad, but after changing the battery ...
2
votes
2answers
4k views

HP SmartArray P400 has slow read and write speed

I have desktop in which I installed HP SmartArray P400 controller with two HP DF0146B8052 hard drives. I made RAID0 logical volume from them, but I am getting 20MB/s write speed and ~140-120MB/s read ...
1
vote
1answer
1k views

RAID P410i and P812 performance issues [closed]

I'm having much trouble with I/O performance of HP DL360 server with two RAID controllers - P410i and P812, Windows Server 2008, 36 GiB RAM and 16 x Intel Xeon x5550. The server runs a bunch of tasks ...
1
vote
1answer
438 views

147GB vs. 146GB HP Drives

I'm kind of scratching my head here. One of our clients has a DL180 with 4 x 146GB SAS drives, they show up in ACU as 147GB drives. We ordered spares from HP, and they show as 146GB in ACU and ...
0
votes
1answer
354 views

ways to limit disk IO utilization to raid array partition

I have a raid array partition that is under heavy load by an nfs server, recently it has failed a quite a few times and needed intervention while at 100% utilization. While I am determining the cause ...
4
votes
6answers
14k views

RAID Array performance on an HP Proliant ML350 G5 Smart Array E200i

We have a client who is complaining about performance of an application which utilizes an MS SQL database. They do not believe the performance issues are the fault of the application itself. The ...