Important Prerequisite Information; Installing Or Uninstalling Snapshot - Hitachi AMS2100 User Manual

Important prerequisite information

NOTE: When SnapShot is used together with TCE, restarting the array by
the function that is installed after the function that was installed first is not
required. The restart was done by the function that was installed first in
order to ensure the resource for the data pool in the cache memory.

Installing or uninstalling SnapShot

4-2
Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
If TrueCopy or TrueCopy Extended Distance (TCE) are installed, and
you are installing/uninstalling or enabling/disabling SnapShot on the
remote array, the operation causes the following to occur:
• The data paths for TrueCopy or TCE become blocked. The path is
recovered from the blockade automatically after the array is
restarted.
• TrueCopy or TCE pairs in Paired or Synchronizing status are
changed to Failure pair status when the array is restarted for the
installation. If the array is not restarted, there is not effect on
TCE pair status.
• Hitachi recommends changing TrueCopy or TCE pair status to
Split before installing SnapShot on the remote array.
A key code or key file is required to install or uninstall. If you do not
have the key file or code, you can obtain it from the download page
on the HDS Support Portal, http://support.hds.com.
• Installation instructions are provided here for Navigator 2 GUI.
• For CLI instructions, see
(advanced users only).
Before installing or uninstalling SnapShot, verify that the Storage
system is operating in a normal state. Installation/un-installation
cannot be performed if a failure has occurred.
To install SnapShot without rebooting
1. In the Navigator 2 GUI, click the array in which you will install
SnapShot.
2. Click Show & Configure Array.
3. Select the Install License icon in the Common Array Task.
The Install License screen appears.
Installing and enabling SnapShot
Appendix B, Operations using CLI