Random read workloads are usually best served from:

A.
DRAM, followed by pool disks

B.
Read cache devices (Readzillas)

C.
DRAM, followed by read cache devices

D.
Log devices (Logzillas)

E.
Tape drives

Explanation:
Readzillais aread-optimizedflash SSD for the L2ARC.
Sun ZFS Storage 7000 System Administration Guide