Enabling And Disabling Snapshot - Hitachi MK-97DF8018-00 User Manual

Enabling and Disabling SnapShot

SnapShot is bundled with the Simple Modular Storage system. You must
enabled it before using.
The following describes the enabling/disabling procedure.
•
NOTE: The following conditions must be satisfied in order to disable
SnapShot: All SnapShot pairs must be released (that is, the status of all
LUs are SMPL); All Data Pools must be deleted; All Snapshot Images (V-
VOL) must be deleted
1. From the command prompt, register the array in which the status of the
feature is to be changed, then connect to the array.
2. Execute the auopt to change the status (enable or disable).
Following is an example of changing the status from enable to disable.
If you want to change the status from disable to enable, enter enable
after the -st option.
•
% auopt -unit subsystem-name -option SNAPSHOT -st disable
Are you sure you want to disable the option? (y/n[n]): y
The option has been set successfully.
In order to complete the setting, it is necessary to reboot the
subsystem.
Host will be unable to access the subsystem while restarting. Host
applications that use the subsystem will terminate abnormally.
Please stop host access before you restart the subsystem.
Also, if you are logging in, the login status will be canceled
when restarting begins.
When using Remote Replication, restarting the remote subsystem
will cause both R
emote Replication paths to fail.
Remote Replication pair status will be changed to "Failure(PSUE)"
when pair status is "Paired(PAIR)" or "Synchronizing(COPY)".
Please change Remote Replication
pair status to "Split(PSUS)" before restart.
Do you agree with restarting? (y/n [n]): y
Are you sure you want to execute?
(y/n [n]): y
Now restarting the subsystem. Start Time hh:mm:ss Time Required
4 - 15min.
The subsystem restarted successfully.
%
It may take time for the subsystem to respond, depending on the
condition of the subsystem. If it does not respond after 15 minutes,
check the condition of the subsystem.
3. Execute auopt to confirm whether the status has been changed. An
example is shown below.
•
% auopt -unit subsystem-name -refer
Option NameType
SNAPSHOTPermanent ---
%
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Hitachi Simple Modular Storage Copy-on-Write SnapShot User's Guide
Term Status
Disable
Operations Using CLI