Re: [Veritas-bu] T2000 vaulting performance with VTL/LTO3

Subject:

From:

"Marianu, Jonathan" <JM7640 AT att DOT com>

To:

<VERITAS-BU AT mailman.eng.auburn DOT edu>

Date:

Tue, 20 Nov 2007 09:59:06 -0800

The MPX setting of the original backup can greatly influence the speed of your duplications.

I’m not *telling* you to use a high mpx but it is something to consider testing.

It is very interesting to open up two ssh sessions, put them side by side and run a truss on both the reading and writing bptm processes of the media server while a duplication is running and then rotate your screen 90 degrees to the right.

That illustrates the effect MPX has much better than I could describe in words.

__________________________________________
Jonathan Marianu (mah ree ah' nu)
AT&T Storage Planning and Design Architect
(360) 597-6896
Work Hours 0800-1800 PST M-F

Manager: David Anderson
(314) 340-9296

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