Re: Oracle and RAID

kavis_at_usa.pipeline.com() wrote:

]3 and 5 negative on update/write operation, reliability is gained at the
]expense of performance or need large cache,

                           ^^^^^^^^^^^^^^^^^^

Evironment Details:
Sun 1000e Host, Sun SSA102 Array, 10Gig Database, 120 Concurrent users, RAID5, Veritas VM, Solaris 2.4, Oracle 7.

With Prestoserve write cache ON - average write times are 200ms. Prestoserve write cache OFF - write times down to 60ms.

Fast-writes are OFF in the array (for possible stability reasons, not performance related).

Stats gathered over 2 weeks with very similar loads.

George Dau
gedau_at_mim.com.au Received on Sun Jun 30 1996 - 00:00:00 CEST