Re: Speeding up restores
1999-11-22 13:26:54
Subject: |
Re: Speeding up restores |
From: |
Richard Sims <rbs AT BU DOT EDU> |
Date: |
Mon, 22 Nov 1999 13:26:54 -0500 |
>Are there any clever ideas for speeding up restores??
Some possibilities:
Restoral performance - Avoid use of the COMPression option
for backups, as the client will have
to uncompress every file being
restored!
- Use Collocation...to the extent that
you can afford it in Backups.
- ADSMv3 Small File Aggregation helps
speed restorals.
- ADSMv3 "No Query Restore" speeds
restorals by eliminating the
preliminary step of the server having
to send the full repertoire of file
objects it has for the client, and the
need for the client to traverse the
list if it already knows what needs to
be restored.
- Maximize your buffer sizes; but watch
out for performance penalty at certain
TCPBufsize sizes (q.v.).
- Minimize your MOUNTRetention value for
the duration of the restoral so as to
avoid a new tape mount having to wait
for a lingering tape to be dismounted
from that drive.
- Consider disabling sync for that file
system for the duration of the
restoral.
- Minimize other server activity during
the restoral period.
- Restoral works by reconstructing the
file system directory structure first.
The directories for many operating
systems reside in the ADSM database
itself; but if yours goes to a storage
pool, make the storage pool disk (as
via DIRMc).
Richard Sims, BU
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- Speeding up restores, Jordan, Chris (ELS)
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- Re: Speeding up restores, Jason Morgan - I.T.
- Re: Speeding up restores, Nathan King
- Re: Speeding up restores,
Richard Sims <=
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- Re: Speeding up restores, Lambelet,Rene,VEVEY,FC-SIL/INF.
- Re: Speeding up restores, Remeta, Mark
- Re: Speeding up restores, Mauro Jr, Frank
- Re: Speeding up restores, Jordan, Chris (ELS)
- Re: Speeding up restores, Jordan, Chris (ELS)
- Re: Speeding up restores, Lambelet , Rene , VEVEY , FC-SIL/INF . [mailto:Rene.Lambelet
- Re: Speeding up restores, Mauro Jr , Frank [mailto:Frank.MauroJr
- Re: Speeding up restores, Richard Sims [mailto:rbs
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