Deciding which data protection method to use
Evaluating types of data protection
You can store data in tape archives, on filers, or both. Although tape archives can be cumbersome for data recovery, they are essential and complement online data protection. Therefore, you might want to use multiple data protection capabilities.
Data protection table
The following table summarizes the data protection features that are best for specific tasks.
Task
|
Sync- Mirror
|
Snap-shots
|
Vol-copy
|
Snap-Mirror
|
Snap-Restore
|
Snap-
Vault
|
ndmpcopy
|
Tape backup and recovery
|
NV-FAIL
|
|---|
Archival backup and recovery
|
-
|
-
|
-
|
X
|
X
|
X
|
-
|
X
|
-
|
Mirroring a volume or qtree on another filer
|
-
|
-
|
-
|
X
|
-
|
-
|
-
|
-
|
-
|
Centralized backup of multiple filer and non-filer storage systems
|
-
|
-
|
-
|
-
|
-
|
X
|
-
|
-
|
-
|
Moving a volume or qtree among filers
|
-
|
-
|
X
|
X
|
-
|
-
|
X
|
-
|
-
|
Quick recovery of deleted items
|
-
|
X
|
-
|
X
|
X
|
X
|
-
|
-
|
-
|
Rearranging data within a filer
|
-
|
-
|
X
|
X
|
-
|
X
|
X
|
-
|
-
|
Recovery from double-disk failure
|
X
|
-
|
X
|
X
|
-
|
X
|
X
|
X
|
-
|
Reverting a filer to a previous state
|
-
|
-
|
-
|
-
|
X
|
X
|
-
|
-
|
-
|
Protecting databases against NVRAM errors
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
X
|
Copyright © 1994-2003, Network Appliance, Inc. All rights
reserved.
Part No. 210-00325
File: intro6.htm
Last updated: 01/14/03 17:50:30