Technical data

Managing Peripheral Devices
8.2 Getting Information About Devices on the System
If you specify a device name with the SHOW DEVICE command, the system
displays information about the device you specified. If you use certain qualifiers
with SHOW DEVICES, information is displayed about those devices that
currently have volumes mounted or that have been allocated to processes. Refer
to the OpenVMS DCL Dictionary for a list of qualifiers that can be used with the
SHOW DEVICES command.
The following examples use the SHOW DEVICES command. Device protection is
RWPL (read, write, physical, logical).
The SHOW DEVICES/FULL examples include both volume protection and device
protection. In addition, if a volume has a protected subsystem enabled, it also
appears in the display.
Examples
1. The following command shows all devices on the system:
$ SHOW DEVICES
Device Device Error Volume Free Trans Mnt
Name Status Count Label Blocks Count Cnt
$11$DUA9: (SNAP) Online 0
$11$DUA10: (SNAP) Mounted 2 PAGE 83643 3 26
$11$DUA13: (SNAP) Mounted 0 WORK1 192297 36 26
$11$DUA23: (SNAP) Online 0
$11$DUA24: (SNAP) Mounted 0 MONITORPLUS 776808 86 26
DAD0: (TULIP) Online 0
DAD9: (TULIP) Online 0
DAD44: (TULIP) Mounted wrtlck 0 CDBIN06JUL23 97947 1 1
ROSE$MUA0: Online 0
LAVNDR$MUA0: Online 0
TULIP$MUA1: Online 0
IRIS$MUA1: HostUnavailable 0
OPA0: Online 0
DBA0: Offline 0
FTA0: Offline 0
FTA239: Online 0
LTA0: Offline 0
LTA3401: Online spooled 0
LTA3402: Online spooled 0
RTA0: Offline 0
RTA1: Mounted 1
RTA2: Mounted 0
RTB0: Offline 0
TXA0: Online 0
TXA1: Online 0
XT0: Offline 0
2. The following command requests a full listing of the status of the DAD42:
RRD40 device. The device is located on node IRIS in an OpenVMS Cluster
environment.
$ SHOW DEVICES/FULL DAD42:
Disk DAD42: (IRIS), device type RRD40, is online, mounted, software write-
locked, file-oriented device, shareable, error logging is enabled.
Error count 0 Operations completed 146
Owner process "" Owner UIC [SYSTEM]
Owner process ID 00000000 Dev Prot S:RWPL,O:RWPL,G:RWPL,W:RWPL
Reference count 1 Default buffer size 512
Total blocks 1218000 Sectors per track 4
Total cylinders 50750 Tracks per cylinder 6
Allocation class 11
Managing Peripheral Devices 8–3