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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_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
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