I have been thinking about this. DDN's SFX looks like it might be able to do this at the block level. I am trying to get them to think that they should do this.
I wonder how much one should have. A quick scan of my robinhood data base shows my 640TB lustre filesystem (50% full) 56TB of data is 1 month old or younger. But maybe we don't care about 1 month, maybe 1 week, or 1 hour is enough. I wonder if an intelligent system could use flash to deal with random write (common random re-reads). and keep the spinning rust getting nice large sequential writes. Getting a lot closer to peak of spinning rust. Just my thoughts on this, from long time lurker. Brock Palen www.umich.edu/~brockp CAEN Advanced Computing bro...@umich.edu (734)936-1985 On Feb 6, 2013, at 4:36 PM, Prentice Bisbal wrote: > Beowulfers, > > I've been reading a lot about using SSD devices to act as caches for > traditional spinning disks or filesystems over a network (SAN, iSCSI, > SAS, etc.). For example, Fusion-io had directCache, which works with > any block-based storage device (local or remote) and Dell is selling > LSI's CacheCade, which will act as a cache for local disks. > > http://www.fusionio.com/data-sheets/directcache/ > httP//www.dell.com/downloads/global/products/pedge/en/perc-h700-cachecade.pdf > > Are there any products like this that would work with parallel > filesystems, like Lustre or GPFS? Has anyone done any research in this > area? Would this even be worthwhile? > > -- > Prentice > > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
