HP StorageWorks Reference Information Storage System V1.5 Administrator Guide (T3559-96044, June 2006)

• Use a remote console program like VNC. (Use the PCC’s I P address.)
• Use the command line shell from the Tivoli administrative console program (dsmadmc, with
admin as the user name and admin as the password).
The availability of these options depends on the access mo de that is configured for your RISS. Discuss
this with your HP service representative.
Smart cell data backups
After a RISS storage domain has been configured for backup, each smart cell group in that domain
performs a backup every hour. Any new data files that have been stored in the group since the previous
backuparecombinedintoasingleaggregatefileandbackedup.
The secondary smart cell usually performs this backup. However, the primary cell in the group performs
the backup if the secondary cell is unavailable.
The smar t cell itself initiates the backup. Because this is automatic and does not involve Tivoli’s internal
scheduler,
the TSM configuration does not include a schedule for smart cell backups.
Separate Group Volumes
An option for Separate Group Volumes is available in the Backup section of the RISS master configuration
file. If selected, this option ensures that data backed up from one smart cell group is never stored on the
same media as another smart cell group.
Only select this op tion if you specifically require this functionalit y, because i t complicates the creation
of offline copies and leads to a less efficient use of backup tapes.
If you select the Separate Group Volumes option, a separate TSM node object and accompanying
objects for each smart cell group are created. After you have selected this option, it ca nnot be changed
without first removing all existing smart cell backups.
TSM backup terms
The following section contains short descriptions of important TSM terms and concepts and how they
relate t
oeachother.
The three basic TSM elements are library, device,andpath:
A library is a set of one or more drives that have simila r media mounting requirements. A library can
also inc
lude robotic devices.
A device represents a tape or optical drive.
A path describes a one-to-one relationship between a source a nd a destination. Data can flow from
source t
o destination and back. The path is the element that connects the server, library, and device.
A device class is a logical collection of devices for similar media. Every device that is attached to a library
has to b e a member of a device class. The device class contains the library name and the device t ype.
A storage volume is the basic unit of storage media (for example, a tape). Storage volumes are grouped
into sto
rage pools, which can be arranged in a storage hierarchy. The term server storage represents all
storage pools in the system.
The following terms define how client data is handled:
• A policy domain is a logical construct that keeps policy sets, management classes, and copy
groups
together.
• A policy set is a set of rules that defines how to handle client d ata within TSM. (A policy is a rule.)
• A management class determines how client files are managed and where they are initially stored.
It also contains information about how to handle files that clients back up, archive, or migrate.
• Each m
anagement class can contain up to two copy groups: abackupcopygroupandan
archi
ve c opy group. Each of them points to a destination, which is a storage pool where files
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Backup system administration