On Tue, May 27, 2008 at 12:44 PM, Rob Logan <[EMAIL PROTECTED]> wrote: > > There is something more to consider with SSDs uses as a cache device. > why use SATA as the interface? perhaps > http://www.tgdaily.com/content/view/34065/135/ > would be better? (no experience) > > "cards will start at 80 GB and will scale to 320 and 640 GB next year. > By the end of 2008, Fusion io also hopes to roll out a 1.2 TB card..... > 160 parallel pipelines that can read data at 800 megabytes per second > and write at 600 MB/sec.... 4K blocks and then streaming eight > simultaneous 1 GB reads and writes. In that test, the ioDrive > clocked in at 100,000 operations per second... beat $30 dollars a GB,"
These could be rather interesting as swap devices. On the face of it, $30/GB is pretty close to the list price of taking a T5240 from 32 GB to 64 GB. However, it is *a lot* less than feeding system-board DIMM slots to workloads that use a lot of RAM but are fairly inactive. As such, a $10k PCIe card may be able to allow a $42k 64 GB T5240 handle 5+ times the number of not-too-busy J2EE instances. If anyone's done any modelling or testing of such an idea, I'd love to hear about it. -- Mike Gerdts http://mgerdts.blogspot.com/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
