Solid-state disks

Early versions of IBM Storage Scale System 3200 used several solid-state disks (SSDs) in each recovery group in order to redundantly log changes to its internal configuration and fast-write data in non-volatile memory, accessible from the primary or backup IBM Storage Scale RAID servers after server failure.

Later versions of IBM Storage Scale System 3200 typically use NVRAM, with a single SSD per recovery group that is only used as a backup for the NVRAM in case of failure.