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Re: [Off-topic] Battery Backed NVRAM for journals ...



"Stephen C. Tweedie" <sct redhat com> writes:

> > A fair bunch of people did a fair bunch of testing of this last year.
> > Bottom line: RAM-based journals don't speed ext3 up.
> 
> Well, they did, but in general it was no better than adding an
> external disk-based journal.

So I want to use a small RAID-1 to hold the journal for the 600GB
RAID-5-based FS. Should be OK?

I haven't found hints on sizing the external journal. How big should
it be, and how do configuration factors (journalling mode e.g.)
influence this?

	Sven





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