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Block size for backup filesystem

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Cory Sane[TeamSybase]
 
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Default Block size for backup filesystem - 12-08-2009 , 09:42 AM






Guys,

My Unix team is rebuilding a solaris vxfs mountpoint for my backups.
What is best block size for this filesystem when using "with compression"?

Cory

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Jason L. Froebe [TeamSybase]
 
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Default Re: Block size for backup filesystem - 01-06-2010 , 09:57 AM






Cory Sane[TeamSybase] wrote:
Quote:
Guys,

My Unix team is rebuilding a solaris vxfs mountpoint for my backups.
What is best block size for this filesystem when using "with compression"?

Cory
The dump file is created with a data stream that is for all essential
purposes, write only. You're really not going to see much benefit at
all deviating from the standard block size for veritas.

For a database device file, then it is more important as there will
presumably be lots of activity. I would start with either the size of
the logical page or the size of an extent.. then benchmark for i/o
throughput & latency.

If this is on a SAN, then how the 'disk slice' is built is far more
important than the block size but I digress

jason

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