Adaptec 2169400-R User Guide - Page 87

Creating a Snapshot, Snapshot Limitations

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Chapter 7: Protecting Your Data ● 87 Creating a Snapshot Note: Snapshot is an upgrade feature; if the snapshot feature is locked, see Adding Enhanced Features on page 20 for information on purchasing a feature key. Snapshots are only supported on Windows and Linux operating systems. A snapshot is a frozen image of a logical drive at a particular point in time. You can copy the data on one logical drive to another logical drive by creating a snapshot. You may want to do this if you want to back up your data to tape, clone a drive, or copy the data to multiple servers. There are two snapshot options: ● Snapshot Backup-Copies all data on a logical drive so that it can be moved from one server to another. See page 88. ● Snapshot Nobackup-Creates a temporary copy of a logical drive for tape backup and reference (uses less system resources than Snapshot Backup). See page 88. To delete an existing snapshot, see page 89. Snapshot Limitations ● You can create a snapshot on systems running Windows or Linux only. ● You can create a snapshot of only one controller at a time; you can't create a snapshot that includes multiple controllers. ● The source logical drive (the logical drive that you're copying) and the target logical drive (the logical drive that you're copying to) must be on the same controller. ● The source and target logical drives may have the same or different RAID levels. ● You can create up to four snapshots on each controller. ● The size of the target logical drive must be greater than or equal to the size of the source logical drive. ● You can't take a snapshot of a booted operating system volume. ● You can't modify any information on a snapshot.

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Chapter 7: Protecting Your Data
●
87
Creating a Snapshot
Note:
Snapshot is an upgrade feature; if the snapshot feature is locked, see
Adding Enhanced
Features
on page 20
for information on purchasing a feature key.
Snapshots are only supported on Windows and Linux operating systems.
A
snapshot
is a frozen image of a logical drive at a particular point in time. You can copy the
data on one logical drive to another logical drive by creating a snapshot. You may want to do
this if you want to back up your data to tape, clone a drive, or copy the data to multiple servers.
There are two snapshot options:
●
Snapshot Backup
—Copies all data on a logical drive so that it can be moved from one
server to another. See
page 88
.
●
Snapshot Nobackup
—Creates a temporary copy of a logical drive for tape backup and
reference (uses less system resources than Snapshot Backup). See
page 88
.
To delete an existing snapshot, see
page 89
.
Snapshot Limitations
●
You can create a snapshot on systems running Windows or Linux only.
●
You can create a snapshot of only one controller at a time; you can’t create a snapshot that
includes multiple controllers.
●
The
source
logical drive (the logical drive that you’re copying) and the
target
logical drive
(the logical drive that you’re copying to) must be on the same controller.
●
The source and target logical drives may have the same or different RAID levels.
●
You can create up to four snapshots on each controller.
●
The size of the target logical drive must be greater than or equal to the size of the source
logical drive.
●
You can’t take a snapshot of a booted operating system volume.
●
You can’t modify any information on a snapshot.