Re: [Veritas-bu] Confusing disk staging methods
2008-12-17 21:29:23
Here are the basics:
1. Basic Disk Staging
Backup to Disk First then a Destaging schedule duplicates the backup image to
tape media. Once the image is successfully destaged to tape, it is then removed
from the disk depending on how your low/high water marks are set. You need
enough disk space with this though to basically store all your backups until
the images can be successfully destaged.
2. Storage Lifecycle Policies
Basically these define the backup/duplication relationships based on the
"level" of the SLP defined in the policy. The nice thing about these is you
define the schedule once and it handles it from there backing up and
duplicating based on the directives in the policy. The caveat here is that you
need Advanced Disk Staging units which means the Flexible Disk Option (Read
$$$$$$$$). This is basically Vault without the reporting/management
functionality.
3. Multiple Copies
When a backup runs, it makes multiple copies based on what you tell it. Think
of it as multiple destinations for a backup at the time the policy runs.
-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of ssloh
Sent: Wednesday, December 17, 2008 9:00 PM
To: veritas-bu
Subject: [Veritas-bu] Confusing disk staging methods
Hi folks,
Could help to elaborate what are the differences & scenarios apply between
1. Basic Disk staging
2. Storage Lifecycle Policies
3. Multiple copies
After reading the NBU guide getting more and more confusing.
Thanks
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_______________________________________________
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