Creating A Fc Vtl Library; Drive Port Assignment For Storeonce Backup Systems - HP StoreOnce 2700 Installation And Configuration Manual

Creating a FC VTL library

1. When you use the StoreOnce GUI or CLI to create the library or Catalyst store device, select
one of the FC ports. The following example shows the Port drop-down in the StoreOnce GUI
for a model with two FC cards. For information about the other fields, see the HP StoreOnce
Backup system User Guide or online Help.
NOTE:
ports 3&4, or all four FC ports (if four ports are available). When four ports are available,
be aware that Port 1 and port 3 are on the first FC card; port 2 and port 4 are on the second
FC card, so it is important to ensure that the system has been cabled correctly when connecting
to the FC SAN. If you select one of the combined port options, both FC cards must be
connected.
2. Configure zones on the FC Fabric/Switch, if required. WW names for each library can be
found on the Interface Information tab.
3. The library device(s) should now be visible to the host. It may be necessary to perform a system
re-scan.

Drive port assignment for StoreOnce Backup systems

Drives can only appear on one port, so when you choose a combination of ports, the library
robotics are presented across all of the ports selected but the drives are automatically distributed
evenly across the ports to ensure best performance and failover. After creating the library, it is
possible to change the drive assignments using the edit function on the Interface Information tab
for the selected library. See the HP StoreOnce Backup system user guide for more details..
If you choose to present the VTL to FC Ports 1 &2 or FC Ports 3&4, the following happens. For this
example, Ports 1&2 are selected.
The robot is presented to both Port1 and Port2.
50% of the configured drives are presented to Port1 and the other 50% to Port2 (this can be
changed if required using the edit function on the Interface Information tab for the selected
library. See the HP StoreOnce Backup system user guide for more information.).
With this configuration in the event of a Fabric Failure – the robot and 50% of the drives are
available for backup.
The disadvantage of this feature is that only a single 8Gb FC link is available for backups to
that library.
NOTE: If you choose to put the library on all four FC ports, it will put all the drives on Port 1.
78 Fibre Channel installation and configuration
When creating a FC library, you may select individual ports, FC ports 1&2 or FC