Partitioning—General
Julyl 2017 Partitioning Overview 253
TABLE B-1 shows how the SCSI Move and SCSI Read Element Status commands are
affected by the shared mailslot assignment. For the purposes of this example, the
library has been configured with two partitions. The library supports up to eight
partitions. The behavior is the same for one or more partitions.
Note – The operator must use the UNASSIGN action in the user
interface to remove the partition ownership of the mailslots when
the import or export operation is complete.
The operator can open the mailslot only if it is unlocked. The locked or unlocked
state of the mailslot depends on the mailslot assignment and the SCSI Prevent/Allow
Medium Removal state. The library keeps separate Prevent/Allow Medium Removal
data for each partition. Refer to the SCSI Prevent/Allow Medium Removal
Command for more details.
TABLE B-1 SCSI Commands Affected by the Shared Mailslot Assignment
Mailslot
Assignment Commands from Partition 1 Commands from Partition 2
Unassigned Commands will be processed as though
the mailslot door is open. The
following commands will report
exception status:
• Read Element Status command that
includes the mailslot element(s)
• Move command with source or
destination set to a mailslot
Commands will be processed as though
the mailslot door is open. The
following commands will report
exception status:
• Read Element Status command that
includes the mailslot element(s)
• Move command with source or
destination set to a mailslot
Assigned to
Partition 1
Commands will be processed normally.
The SCSI Read Element Status and SCSI
Move commands will only report that
the Mailslot is open if it is physically
opened and the request includes the
mailslot.
Commands will be processed as though
the mailslot door is open. The
following commands will report
exception status.
• Read Element Status command that
includes the mailslot element(s)
• Move command with source or
destination set to a mailslot
Assigned to
Partition 2
Commands will be processed as though
the mailslot door is open. The
following commands will report
exception status:
• Read Element Status command that
includes the mailslot element(s)
• Move command with source or
destination set to a mailslot
Commands will be processed normally.
The SCSI Read Element Status and SCSI
Move commands will only report that
the Mailslot is open if it is physically
opened and the request includes the
mailslot.
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