Neal Pollack <Neal.Pollack <at> Sun.COM> writes: > > Pliant Technologies just released two "Lightning" high performance > enterprise SSDs that threaten to blow away the competition.
One can build an SSD-based storage device that gives you: o 320GB of storage capacity (2.1x better than their 2.5" model: 150GB) o 1000 MB/s sequential reads (2.4x better than their 2.5" model: 420MB/s) o 280 MB/s sequential writes (1.3x better than their 2.5" model: 220MB/s) o 140k random 4kB read IOPS (1.2x better than their 2.5" model: 120k) o 26k random 4kB write IOPS (Pliant doesn't document it) o at a price of $920 (half the MINIMUM price hinted by Pliant ) This device is a ZFS stripe of 4 80GB Intel 34nm MLC devices ($230 each). Now, the acute reader will observe that: o Pliant's device is SLC, mine is MLC (shorter life - but so cheap it can be replaced cheaply) o The Pliant specs I quote above are from their website, some press releases quote slighly higher numbers o Pliant's device fits in a single 2.5" bay, mine requires 4 o Pliant doesn't quote random 4kB *write* IOPS performance - if I were a potential buyer, I would ask them before buying As a side note, I personally measure 15k random 4kB write IOPS on my Intel 34nm MLC 80GB drive whereas Intel's official number is 6.6k - they probably give a pessimistic number representing the performance of the drive after having been aged. -mrb _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
