Managing Snapshots; Snapshots; Activating Snapshots; Creating A Snapshot (Without A Policy) - Dell PowerVault NX3500 Administrator's Manual

Managing Snapshots

Snapshots

Snapshot technology creates a point in time backup of the data that resides
on a volume. There are various policies that can be set for creating a snapshot.
These policies include when a snapshot is to be taken, how many snapshots to
keep, and how much NAS volume space can be used before snapshots are
deleted. Snapshots are based upon a change set. When the first snapshot of a
NAS volume is created, all snapshots created after the baseline snapshot is a
delta from the previous snapshot.

Activating Snapshots

Snapshots are a licensed feature. Customers are provided a key to activate
snapshots using the CLI. The syntax is as follows:
system general licensing set snapshots XXXXXXX

Creating a Snapshot (Without a Policy)

To create a snapshot:
1 From the NAS Manager, navigate to Data ProtectionSnapshotsList.
2 Create a snapshot by clicking the Create button.
3 Choose the NAS volume from the drop-down menu and give the snapshot
a unique name.

Adding or Modifying a Snapshot Policy

From the NAS Manager, navigate to Data ProtectionSnapshotsPolicies.
Add or modify a snapshot policy by selecting the appropriate NAS volume
from the dropdown menu. There are several options on this page.
• Alert Administrator: Sends an alert to the administrator when the
snapshot space reaches a certain percentage of the total volume size.
• Periodic/Hourly/Daily/Weekly: These options can be combined to set
particular schedules. Creating a snapshot impacts system performance.
Each option has a number of snapshots to keep. It is advised to keep this
number as low as possible or system performance may suffer.
Protecting Data on PowerVault NX3500
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