Thanks.

The proble is that we are trying to design automatic tool that will be able to calculate available capactiy per each raid group prior to its creation. So in order to do it we have to know what size hard drive we are using. we though to use the number get from getdisk (capacity) output.

Do you know if there is any formula that can translate this disk capacity number (from getdisk) to actual available capacity?

Thanks again

Alec

FLARE reserves a small amount of disk capacity for tracking tables and logs. I believe that when you are looking at the getdisk it is reporting on the disk only and not including FLARE.

A 146GB drive outside of the vault will yeild a usable capacity of 133.6473GB which matches up with the capacity of your (4+1) R-5 RAID Group.

For determining how much usable capacity you have to create LUNs look at the getRG information it is going to factor in the FLARE and the RAID Type overhead.

Since you are an EMC Partner there is already a disk capacity calculator available to you at the EMC Services Partner Web under "Tools & Forms" and then under "implementation services'

Hi,

there is also a good document available about disk capacities and usable disk space. Can be found in the Proven Professional area:

https://community.emc.com/docs/DOC-4519 "Comparing Apples to Oranges to Bricks".

Dieter