HP StoreEver MSL2024, MSL4048, MSL8048, and MSL8096 Tape Libraries User and Service Guide (AK378-96059, December 2012)

Table Of Contents
Logical libraries
You can configure a tape library with multiple tape drives into logical libraries. Each logical library
must contain at least one tape drive. Each logical library is configured independently, allowing
use by different backup applications and with different backup policies. For example, one logical
library could perform a backup operation for one department while the second logical library
restores data for another department. Or, one logical library could have encryption enabled while
another has encryption disabled. Data cartridges in one logical library cannot be shared with
other logical libraries.
All logical libraries have access to the mailslot, if the mailslot is enabled. The tape library prohibits
a cartridge that was placed in the mailslot by one logical library from being moved into another
logical library. The library allows a cartridge that was placed in the mailslot by the operator to be
moved into any logical library. If sharing the mailslot among logical libraries is an issue in your
environment or is not supported by your backup application, disable the mailslot.
Each logical library has a unique serial number and World Wide Identifier (WWID), which can
be found in the RMI Identity: Library screen. For more information on WWIDs, see “World Wide
identifiers” (page 42).
NOTE: Libraries that require a license to enable all slots must have all slots licensed to operate
with the Library Extender.
Partitioning the MSL2024 and MSL8048 Tape Libraries
An MSL2024 Tape Library with two tape drives can be configured into two logical libraries. Each
logical library is assigned one tape drive and one magazine.
An MSL8048 with at least two tape drives can be configured into two logical libraries. Each logical
library is assigned at least one tape drive and two magazines.
Table 10 MSL2024 and MSL8048 Tape Libraries partitioned into two logical libraries
MagazinesTape drives
MSL2024
MSL8048
1. Logical library 1 tape drives and magazines
2. Logical library 2 tape drives and magazines
Partitioning the MSL4048 and MSL8096 Tape Libraries
The MSL4048 and MSL8096 Tape Library can be configured into two to four logical libraries,
depending on the number of tape drives installed. The MSL4048 supports up to two full-height
Logical libraries 19