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Device support modifications z/OS DFSMS Software Support for IBM System Storage TS1140, TS1130, and TS1120 Tape Drives (3592) SC23-6854-00 |
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z/OS® DFSMS device support provides hardware
device-specific code, which allows tape drives, tape volumes, and
DASD to interface with z/OS DFSMS. Specifically, it provides:
You can use the MVS DEVSERV command to request basic status information on a device, a group of devices, or storage control units. You can use the QTAPE parameter of the DEVSERV command to display tape device information. Use DEVSERV QTAPE to display the real device type and the emulated device type. With the DEVSERV QTAPE MED (medium) option, you can display information for the device type, media type, and cartridge volume serial number. The syntax of the DEVSERV QTAPE command with the MED option is as follows: DS QT,xxxx,MED,nnn
DEVSERV QTAPE will display '3592E07' for the real device type, where E07 is the drive model, if the underlying physical device is a 3592 Model E07 (TS1140). If the MEDIUM option is specified for DEVSERV QTAPE command, the real device type will be displayed as '3592-4E'. Figure 1 shows the output of
DS QT,960 when a TS1140 (3592 Model E07) tape drive emulates a 3590
Model B1x tape drive.
Figure 1. DS QT,960 output
Figure 2 shows the output of
DS QT,960,MED when a TS1140 (3592 Model E07) tape drive emulates a
3590 Model B1x tape drive.
Figure 2. DS QT,960,MED output
A bit DFVTJAG4 is added to the IHADFVT mapping macro that maps the data facilities vector table. When this bit is set, it indicates that all of the software support for the 3592 Model E07 (TS1140) drive is on the system. This bit is set by the enabling module IECTEPTF, if it is installed. The IECUCBCX mapping macro is changed to support the TS1140:
The DDR Swap Exit handles swaps involving the 3592 Model E07 drive
and the new recording formats EFMT4 and EEFMT4. Appropriate rules
are also put in place for handling a lower technology EFMT2, EFMT3,
EEFMT2, or EEFMT3 (MEDIA9 and MEDIA10) request on a 3592 Model E07
to a 3592 Model J, E05, or E06 (as appropriate and as consistent with
past 3592 support). Table 1 shows
a summary of what swaps are allowed.
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