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

Installing and uninstalling SnapShot

Installation instructions are provided for Navigator 2 GUI.

Important prerequisite information

• 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.
• 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.
• If TrueCopy or TrueCopy Extended Distance (TCE) are installed, and
you are installing/uninstalling or enabling/disabling SnapShot on the
remote array of one of those systems, the operation causes the
following to occur:
- The data paths for TrueCopy or TCE become blocked. When a path
is blocked, a TRAP occurs, that is, a notification to the SNMP Agent
Support Function. 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.
- Hitachi recommends changing TrueCopy or TCE pair status to Split
before installing SnapShot on the remote array.
- 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.
NOTE: If you install or uninstall SnapShot because of a spin-down
instruction when Power Saving, the spin down may fail if the instruction is
received immediately after the array restarts. If the spin-down fails,
perform the spin-down again. Check that the spin-down instruction has not
been issued or has been completed (no RAID group in the Power Saving
Status of Normal(Command Monitoring) exists) before installing or
uninstalling SnapShot.

Installing SnapShot

SnapShot cannot usually be selected (locked) when first using the array. To
make SnapShot available, you must install the SnapShot and make its
function selectable (unlocked).
To install SnapShot without rebooting
1. From the command prompt, register the array in which SnapShot is to
be installed, then connect to the array.
2. Execute the auopt command to install SnapShot. For example:
B–2
Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
Operations using CLI