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Re: [Veritas-bu] NBU 5.1: Disk staging causing heavy fragmentation
2008-02-20 12:32:51
On Feb 20, 2008 11:10 AM, Martin, Jonathan <JMARTI05 AT intersil DOT com> wrote:
I have found through testing when we first added some 16TB
of storage for Disk-2-Disk that your fragmentation is going to be directly
related to how many simultaneous streams you write to a DSU/DSSU at a
time. In my testing, I got a minimum amount of fragmentation with 1-2
Streams, a bit worse with 4 streams, and at my current 20 max streams we're
completely 100% fragmented. Sysinternals has a took that allows you to
look at your disks sector by sector to look for fragmentation, but its a bit
difficult to you use on disks that are 1TB or better.
I created this slide for a Netbackup Training presentation
I did 6 months ago...
Wow, this is excellent! Thanks much for the insight.
T.
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