> You're assuming that the "into an empty device" performance is > required by their application.
My assumption was stated in the paragraph prior, i.e. vendor promised random write IOPS. Based on the inquires we receive, most *actually* expect an OCZ SSD to perform as specified which is 50K 4KB random writes for both the Vertex 2 EX and the Vertex 2 Pro. The point I was trying to make, Secure Erase is not a viable solution to write IOPS degradation, of the above listed SSDs, relative to published specifications. I think we can all agree, if "Secure Erase" could magically solve the problem it would already be implemented by the SSD controller. > For many users, the worst-case steady-state of the device (6k IOPS > the Vertex2 EX, depending on workload, as per slide 48 in your > presentation) is so much faster than a rotating drive (50x faster, > assuming that cache disabled on a rotating drive is roughly 100 > IOPS with queueing), that it'll still provide a huge performance boost > when used as a ZIL in their system. I agree 100%. I never intended to insinuate otherwise :-) Best regards, Christopher George Founder/CTO www.ddrdrive.com -- This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
