They are fast when they are new. Once all the blocks are written, performance degrades significantly. SLC will also degrade over time, but when it needs to erase blocks and rewrite, it is much faster than MLC. That's why for ZIL, SLC SSD is prefered.
It's possible to remove MLC ZIL and use wiper utility to erase all the blocks and put it back. -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
