On Aug 3, 2010, at 9:27 AM, Merlin Moncure wrote: > > 2) I've heard that some SSD have utilities that you can use to query > the write cycles in order to estimate lifespan. Does this one, and is > it possible to publish the output (an approximation of the amount of > work along with this would be wonderful)? > On the intel drives, its available via SMART. Plenty of hits on how to read the data from google. Sandforce drives probably have it exposed via SMART as well. I have had over 50 X25-M's (80GB G1's) in production for 22 months that write ~100GB a day and SMART reports they have 78% of their write cycles left. Plus, when it dies from usage it supposedly enters a read-only state. (these only have recoverable data so data loss on power failure is not a concern for me). So if Sandforce has low write amplification like Intel (they claim to be better) longevity should be fine. > merlin > > -- > Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-performance -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
