MSA 1000 and Stripe Size

[Benedikt Geltenpoth]

Hi,
I have 2 MSA 1000 Storages Arrays
I have configured several logical drives on bothb machines and used the default RAID/Stripesize of 16 KB.

For performance reasons, I want to increase the Stripesize to 64 KB. This is posible on the first machine, but not on the second one. I do not have the option 64KB in the ACU's dropdown list.

Both machines have the same firmware release 4.32

Does anybody have ay idea??

[Joshua Scott]

How much unconfigured space do you have on each system?

Josh

[Benedikt Geltenpoth]

The array which I can't modify is complete in used...on the other one I have 500 MB space left.

[Steven Clementi]

Benedikt:

Are the arrays cofigured exactly the same? If not, please let us know a few things...

What size physical drives? What size arrays? What size Logical Units? and what is the free space after configuration, if any.


I think Josh is on the right track. If you do not have enough free space to make the change, it won't allow the operation since 64K stripe would need extra space for those smaller files less then 64k.

If you configured exactly the same, then you might have a hardware issue.


Steven

[Joshua Scott · Accepted solution]

To reset the stripe size the array must have enough space available to move data around. An array with all the space configured can not be reconfigured without a backup and restore.

Josh

[Benedikt Geltenpoth]

Hi Josh, Hi Steven,

that makes sense....I'll recreate the logical drives with 64KB stripe size...

Thanks for your help...