Around 07:30 this morning we had a lun on a tiered system go offline due to missing pages. Other luns are still online, we have 10 snapshots of this offline lun. I'm worried that our san may be having issues (like deterioration due to age) but we have no other error or alerting messages (other than the failed lun)

The SAN is comprised of a PS6510 and PS6110XV version 7.2.1

Thank you in advance.