The way I recall it working, as explained by one of the EMCers that contributes to this forum, is that the spindle speed only impacts the ability of the disk to service a request and does not affect interoperability with slower disks (in relation to mixing of spindle speeds). So if you have a mixed RAID group or in your case a MetaLUN with components that are comprised of the same drive type and capacity but different spindle speeds, this only affects the rate that those individual disks can service requests. Simply put, some of the disks in your MetaLUN will service requests faster than others. That is all.
hi, i was asked to create a metalun. I looked at the existing disks and they are 450gb 10k. The new disks are 450gb 15k. Will the different in disk speeds have an effect on the metalun that is undesirable?  Would the 15k disks run at a 10k speed in this situation?   Thanks, Mark Wragge
metalun with disks of different speeds