Hi everybody, I have been reading this thread and I got the idea that SANs to avoid, but would somebody please give a bit of Comparison/perspective on NAS? Regards, Tena Sakai tsakai@xxxxxxxxxxxxxx On 9/7/10 12:36 PM, "Craig James" <craig_james@xxxxxxxxxxxxxx> wrote: > On 9/7/10 12:06 PM, Jesper Krogh wrote: >> On 2010-09-07 20:42, Scott Marlowe wrote: >>> With the right supplier, you can plug in literally 100 hard drives to >>> a regular server with DAS and for a fraction of the cost of a SAN. >> Ok, recently I have compared prices a NexSan SASBeast with 42 15K SAS drives >> with a HP MDS600 with 15K SAS drives. >> >> The first is 8gbit Fibre Channel, the last is 3Gbit DAS SAS. The >> fibre channel version is about 20% more expensive pr TB. >> >> So of course it is a "fraction of the cost of a SAN", but it is a >> fairly small one. > > Are you really comparing equal systems? "8gbit Fibre Channel" means a single > Fibre Channel shared by 42 disks, whereas "3GBit DAS SAS" means 42 3gbit > channels running in parallel. It seems like you'd really need some realistic > benchmarks that emulate your actual server load before you'd know how these > two systems compare. > > Craig > -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
