What is Write back Flash cache?
Write back flash cache provides the ability to cache write I/Os
directly to PCI flash in addition to read I/Os.
Exadata storage software version 184.108.40.206.1 is the minimum version required to
use write back flash cache.
Using Exadata storage software version 220.127.116.11.1, Exadata Smart Flash Cache is
persistent across Exadata Storage server restarts.
2. What software and
hardware versions are supported?
Write-back Smart Flash Cache requirement has been amended to state
that both grid infrastructure and database homes must run 18.104.22.168.9 or later.
Database homes running 22.214.171.124 that cannot promptly upgrade to
126.96.36.199 to meet the amended requirement must install Patch 17342825.
As long as the minimum software requirements are met, any Exadata
hardware with flashcache (V2 and later) can take advantage of this feature.