Good day, everyone.
We have some packs standalone ESXi (version from 4.1 to 5.1 U3)
Guest OS: SuSE 11 64bit.
Host: HP Proliant DL380 G6, HP Proliant DL380 G7, HP Proliant DL380 Gen8.
Host have 3 Datastore: System - Raid 1 (2 physical drive) , Data - Raid 5 (3 physical drive), Backup - Raid 1 (2 physical drive) and 1 physical drive is spare for System and Data.
And often when disk from Data detect SMART error, DATA from Guest OS change state to R/O.
After reboot guest OS all work correct.