Different Disks in Same RAID

[Caster Troy]

Hi Folks,
Is it possible to add 146GB 10K RPM disks with 72GB 15K RPM disks in same RAID, either RAID1 or RAID0. The controller is 642.

[Chris Saindon]

Hello Caster,

This can be done as long as the drive is compatible with the server. I would need model number or a spare number to know for sure.

The problem is this, with a 146GB drive in there, only 72GB of it will be used and the rest unallocated. This isn't a huge deal though. The problem arises in the speed different of the drives. The array will slow down to the slowest drive. So by adding 1 10k drive, the whole array drops to 10k.

So in short, it is possible, but it will affect performance.

Chris

[Sivakumar TS]

Hi Caster,

It is posible but in RAID1 you can ONLY configure to the size of SMALLEST drive among.

Regards,

Siva.

[Sivakumar TS]

Hi,

In your case even if you have 142GB and 72 GB you can configure a RAID1 volume of 72GB only.

Regards,

Siva.