StorageTek Host Software Component 6.0, Руководство системного программиста

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Chapter 2. Host Software Component Functions 35
1st ed., 6/30/04 - 312579601
The MNTD PASSTHRU parameter works with SCRDISM by setting the maximum
number of pass-thrus that can occur for a cartridge that is to be archived.
Refer to the ‘‘MNTD (Mount/Dismount Options) Command and Control Statement’’ in
the
HSC Operator’s Guide for a description of all the options associated with this
command.
If the dismount occurs for a temporary volume, the volume is ejected through a CAP, and
a message informs the operator to retrieve the cartridge.
You can intervene in how the HSC controls library operation. Tape cartridge movement, as
well as many other functions, can be controlled to function in ways that you prefer. Refer
to Chapter 4, “Utility Functions” on page 131 for information about utilities that can be
used to control HSC operation of the library. Refer to the
HSC Operator’s Guide for
information about operator commands that can be used for controlling library operation.
Abnormal Mounts/Dismounts
The HSC handles abnormal situations through communication with the operator so
intervention may take place to accomplish the mount. The following examples indicate the
types of situations in which this communication takes place:
• The transport is in an ACS, but the volume is not. The HSC issues a WTOR.
The operator may:
- reply that the mount request is to be ignored and the TMS request is canceled
- reply that the volume is to be permanently entered into the library
- reply that the volume is to be temporarily entered into the library
- enter the volume and the HSC automatically retries the volume lookup.
• The volume and/or transport resides in a manual mode LSM.
- All mount and dismount requests are queued until either a response is made to
one of the manual mode WTORs or the LSM is returned to automatic mode. At
this point, all queued requests are processed.
- A console interaction (WTOR) is provided to indicate the VOLSER’s location.
- When a transport’s LSM is in manual mode or the robotic control path to the
LSM is inoperative, operator intervention is requested to assist in performing
the mount.
- When the transport being dismounted is in a manual mode LSM, the operator is
requested to dismount the cartridge and to remove it from the LSM. The volume
is deleted, or the operator may be asked if the volume is to be deleted, from the
control data set.
The volume may be deleted from the control data set depending on the setting
of the MNTD command. A delete occurs unconditionally if MNTD
Dismount(Auto) is entered. Otherwise, a reply is required.