On Jan 31, 2011, at 6:16 PM, Roy Sigurd Karlsbakk wrote: >> Even *with* an L2ARC, your memory requirements are *substantial*, >> because the L2ARC itself needs RAM. 8 GB is simply inadequate for your >> test. > > With 50TB storage, and 1TB if L2ARC, with no dedup, what amount of ARC would > you would you recommeend?
Just the L2ARC directory can consume 24GB of ARC for 8KB records. > And then, _with_ dedup, what would you recommemend? Depends on the specific OS release, but I think you should plan on using dedup where the cost/GB is expensive relative to the cost/IOPS. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
