I have an EQL PS5000E which with a recently expired support contract. I am running firmware 6.0.2 and given that this is an old array I don't plan to renew support. My VAR says that the PS5000E can be loaded with either 8 SSD to run it in tiered mode or fully loaded with 16 SSDs.
Supposedly the PS5000E has been opened up to non-Dell disks since fw 6.x and the controller will state "foreign disk" but will allow non-Dell disks to work.
I checked the firmware release notes and couldn't find any info about the PS5000E being able to work with SSD either in tiered or full configuration. Does anyone have first hand knowledge of the PS5000E running with SSDs?