EVA5000 - EVA4400

[Graham Hyland_1]

Hello
We Currently have an EVA5000 with our DB application on 150 fc 15k 72Gb drives.
I have been asked to evaluate the performance hit if we move the application to a EVA4400 on 38 fc 15k 300GB drives, I reckon we will only be able to perform at 25-30% of the current config.

Can anyone help me out here? We will move from 2G Fibre backbone onto 4GB.

We currently have full use of the 5000 and will need to share controlers on the 4400 with a simialr but less intensive application.

[IBaltay]

Hi,
here are some sizing tools:
http://h71028.www7.hp.com/enterprise/cache/576785-0-0-225-121.html?jumpid=reg_R1002_USEN

[Graham Hyland_1]

Hi Thanks for the link,
I'm having trouble running the SAN designer tool,
Is there a different tool that could do the same or even is there a simple rule of thumb in relation to the amount of disks in use?

[Greybeard]

just a comment on the setup, you don't say how many enclosures but for best setup you want 40 disks in the group not 38 as the EVA breaks down the DGs into sets of 8 disks (called RSSs), also you should get better than 25% of the 5k performance as the controllers are more powerful and have a larger cache to serve the 4Gb backend.