best value megaraid manager

[tpesselier]

Hi

I look for the best value for IOpolicy and DiskCachePolicy with megaraid manager (bdd,actlog,archlog)

Enable cache it's dangerous ?

 

[marclant]

Not familiar with Megaraid, however the TSM manual suggest to enable caching for the DB and logs:

You can improve database performance by using hardware that provides a fast, nonvolatile write cache for both the database and logs.

Enable read cache for the database and recovery log, and enable write cache if the disk subsystems support it.

source: http://www-01.ibm.com/support/knowl....srv.doc/c_dsk_space_reqs_db_log.html?lang=en

 

[moon-buddy]

I never use RAID managers (Megaraid is just one of those) without cache enabled.

Caching data allows the disk subsystem to flow data more consistently during read and write operations.