Dell MD3000 Virtual Disk

[Maximil2000]

I've an environment with two ESX 4.0 nodes and a shared storage (Dell MD3000, no iSCSI).

On the storage I've 10 SAS disks at 10K.

How many Virtual Disk I must build? One bigger, two or more smaller?

Thanks

Max

[AndreTheGiant · Accepted solution]

There isn't a simple answer, cause it depends on:

• Storage best practice

• Storage type and disks type

• VM number, size and type of I/O

• Max VM and I/O per LUN

• Max LUN size (less than 2 TB - 512B)

In your case, with 10 disks and two nodes, and a storage that work in active-passive mode, you can create 2 virtual disks.

Create 2 different RAID5 groups (consider also to use 1 disk as global hot spare) and in each group build 1 virtual disk (or more if the size is more than 2 TB - 512 B).

If you have some VM with high I/O consider also to use use 4 disks in a RAID10 configuration instead of RAID5.

Andre