[zfs-discuss] Lower latency ZIL Option?: SSD behind Controller BB Write Cache

Eff Norwood
Thu, 27 Jan 2011 12:41:38 -0000

We tried all combinations of OCZ SSDs including their PCI based SSDs and they do
NOT work as a ZIL. After a very short time performance degrades horribly and for
the OCZ drives they eventually fail completely. We also tried Intel which
performed a little better and didn''t flat out fail over time, but these
still did not work out as a ZIL. We use the DDRdrive X1 now for all of our ZIL
applications and could not be happier. The cards are great, support is great and
performance is incredible. We use them to provide NFS storage to 50K VMWare VDI
users. As you stated, the DDRdrive is ideal. Go with that and you''ll be
very happy you did!