Installation manual

Shadowing a Volume
Adding a Shadow Volume (Target Switch)
15-4 CLI Storage-Management Guide
Choose a shadow volume with at least as much storage capacity as its source
volume(s).
For example, the following command sequence creates a shadow volume to be used
for the “wwmed~/acct” volume later. Note that this CLI session occurs on a different
switch from the one where the “/acct” volume was created; this volume is created on
“prtlndA1k,” a chassis in the same RON as the “bstnA6k” chassis. The namespace is
also different; “nemed” instead of “wwmed.” The two volumes reside on separate
switches and namespaces for added redundancy.
prtlndA1k(gbl)# namespace nemed
prtlndA1k(gbl-ns[nemed])# volume /acctShdw
This will create a new volume.
Create volume '/acctShdw'? [yes/no] yes
prtlndA1k(gbl-ns-vol[nemed~/acctShdw])# shadow
This will cause the all shares in the volume to be erased.
Are you sure you want to remove all data? [yes/no] yes
prtlndA1k(gbl-ns-vol[nemed~/acctShdw])#
Compatible Software Releases
The source and target switches can typically run different software releases, to
facilitate staged software upgrades in you network. At press time, any combination of
releases 2.1.4, 2.4, and 2.4.1 - 2.4.3 are compatible with this release.
The volume must be disabled when you change it into a shadow volume.