Proliant DL980 & IO Accelerator PERFORMANCE issues

[Yaboto]

Hi,

After moving the Database and the application onto the I/O accelerators LUN, I couldn't get the desired performance. I am surprised it is still the same performance as it was in the external EVA storage.

For your information, I used LVM to allocate the space from the pool of 4 io accelerators. This to help me manage the io accelerators space efficiently. Are there any best practices template around ? Should I have used each io accelerator for each partition instead ?

Also after fixing the IO Accelerators, the telnet / ssh /VNC and other connections to the OS interface flickers or hangs at time and make access slow.

Please help !

Please Advice

Yaboto.

[Cederberg]

Hi.

Sounds wierd that it wouldn't be better preformance than an EVA. According to this guide for linux on how to use the IO Accelerator it demands a lot of free ram depending on what blocksize you are using. there is a table describing how much free memory you need on page 8.

http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c02737596/c02737596.pdf

Also a bestpractise for linux on a dl980 g7

http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02946243/c02946243.pdf

There is also a good guide in the following pdf on Cardplacements on page 4-6

http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02861709/c02861709.pdf