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...act that one controller would then be able to take out three drives.) I''ve considered adding a drive for the ZIL instead, but my experiments in disabling the ZIL (using the evil tuning guide at <http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide#Disabl ing_the_ZIL_.28Don.27t.29>) didn''t show any speed increase. (I know it''s a bad idea run the system with ZIL disabled; I disabled it only to measure its impact on my write speeds and re-enabled it after testing was complete.) Current system: OpenSolaris dev release b132 Intel S5500BC mainboard (l...

This may not be a ZFS issue, so please bear with me! I have 4 internal drives that I have striped/mirrored with ZFS and have an application server which is reading/writing to hundreds of thousands of files on it, thousands of files @ a time. If 1 client uses the app server, the transaction (reading/writing to ~80 files) takes about 200 ms. If I have about 80 clients attempting it @ once, it can

We are looking into the possibility of adding a dedicated ZIL and/or L2ARC devices to our pool. We are looking into getting 4 ? 32GB Intel X25-E SSD drives. Would this be a good solution to slow write speeds? We are currently sharing out different slices of the pool to windows servers using comstar and fibrechannel. We are currently getting around 300MB/sec performance with 70-100% disk busy.

Is it true that Solaris 10 u4 does not have any of the nice ZIL controls that exist in the various recent Open Solaris flavors? I would like to move my ZIL to solid state storage, but I fear I can''t do it until I have another update. Heck, I would be happy to just be able to turn the ZIL off to see how my NFS on ZFS performance is effected before spending the $''s. Anyone