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if defer write = off, why use read/write instead of read

Posted: Thu May 24, 2012 5:02 pm
by nosiya
Hello,

When defer write is not selected, what's the use of the read/write algorithm? Why not use read-only?

Thank you.

Re: if defer write = off, why use read/write instead of read

Posted: Fri May 25, 2012 2:26 am
by Support
Read/Write means that the written data are also copied to the cache buffer, so later if applications need to read these data, they can be got from the cache instead of the disks.
Read-only means that the written data are not copied to the cache buffer.