F$GETDVI()

F$GETDVI() is a lexical function that returns information about a specified device.

Format

F$GETDVI(device-name,item[,pathname])

device-name

Specifies a physical device name or a logical name equated to a physical device name. Specify the device name as a character string expression.

After the device-name argument is evaluated, the F$GETDVI function examines the first character of the name. If the first character is an underscore (_), the name is considered a physical device name; otherwise, a single level of logical name translation is performed and the equivalence name, if any, is used.

item

Specifies the type of device information to be returned. The item must be specified as a character string expression (use quotes). You can specify any one of the items listed below. For detailed descriptions of each item code, see the VSI OpenVMS DCL Dictionary.

pathname

If the pathname argument is specified, it is validated against the existing paths for the specified device. If the path does not exist, the NOSUCHPATH error is returned, even if the specified item code does not make use of the pathname argument.

List of F$GETDVI() items by topic

Logicals

Item	Value Returned	Description
CONCEALED	String	TRUE or FALSE to indicate whether the logical device name translates to a concealed device.

Volumes

Item	Value Returned	Description
ACCESSTIMES_RECORDED	String	TRUE or FALSE to indicate whether the volume supports the recording of access times
CLUSTER	Integer	Volume cluster size
CYLINDERS	Integer	Number of cylinders on the volume (disks only)
DIR	String	TRUE or FALSE to indicate whether the device is directory structured
EXPSIZE	Integer	Current expansion limit on the volume
ERASE_ON_DELETE	String	TRUE or FALSE to indicate whether disk blocks are zeroed upon file deletion on the volume.
FREEBLOCKS	Integer	Number of free blocks on the volume (disks only)
HARDLINKS_SUPPORTED	String	TRUE or FALSE to indicate whether Hardlinks, rather than aliases, are supported on the volume
LOGVOLNAM	String	Logical volume name
MAXBLOCK	Integer	Number of logical blocks on the volume
MAXFILES	Integer	Maximum number of files on the volume
NEXTDEVNAM	String	Device name of the next volume in a volume set
ROOTDEVNAM	String	Device name of the root volume in a volume set (disks only)
NOCACHE_ON_VOLUME	String	TRUE or FALSE to indicate whether the volume is mounted with all caching disabled
NOHIGHWATER	String	TRUE or FALSE to indicate whether high-water marking is disabled on the volume
NOSHARE_MOUNTED	String	TRUE or FALSE to indicate whether the volume is mounted with /NOSHARE
NOXFCCACHE_ON_VOLUME	String	TRUE or FALSE to indicate whether the XFC caching is disabled on the volume
ODS2_SUBSET0	String	TRUE or FALSE to indicate whether the volume mounted supports only a subset of the ODS-2 file structure
ODS5	String	TRUE or FALSE to indicate whether the volume is mounted ODS-5
SDI	String	TRUE or FALSE to indicate whether the device is single-directory structured
SECTORS	Integer	Number of sectors per track (disks only)
SERIALNUM	Integer	Volume serial number (disks only)
TRACKS	Integer	Number of tracks per cylinder (disks only)
TRANSCNT	Integer	Volume transaction count
VOLCHAR	String	128-bit string (16 bytes) that represents the volume characteristics or capabilities of the mounted device. If a bit is set, the volume is capable of performing the function
VOLCOUNT	Integer	The count of volumes in a volume set (disks only)
VOLNAM	String	The volume name
VOLNUMBER	Integer	Number of the current volume in a volume set (disks only)
VOLSETMEM	String	TRUE or FALSE to indicate whether the device is a volume set (disks only)
VOLSIZE	Integer	The volume's current logical volume size
VOLUME_EXTEND_QUANTITY	Integer	Number of blocks to be used as the default extension size for all files on the volume
VOLUME_MOUNT_GROUP	String	TRUE or FALSE to indicate whether the volume is mounted /GROUP
VOLUME_MOUNT_SYS	String	TRUE or FALSE to indicate whether the volume is mounted /SYSTEM
VOLUME_PENDING_WRITE_ERR	String	The number of pending write errors on the volume
VOLUME_RETAIN_MAX	String	The maximum retention time for the volume, as specified with the DCL command SET VOLUME/RETENTION
VOLUME_RETAIN_MIN	String	The minimum retention time for the volume, as specified with the DCL command SET VOLUME/RETENTION
VOLUME_SPOOLED_DEV_CNT	Integer	The number of devices spooled to the volume
VOLUME_WINDOW	Integer	The default window size for the volume
VPROT	String	The volume protection mask
WRITETHRU_CACHE_ENABLED	String	TRUE or FALSE to indicate whether the volume is mounted with write through caching enabled

Tapes

Item	Value Returned	Description
MT3_DENSITY	String	Current density of the device
MT3_SUPPORTED	String	TRUE or FALSE to indicate whether the device supports densities defined in MT3DEF (for Alpha tapes only)
SQD	String	TRUE or FALSE to indicate whether the device is sequential block-oriented

Fibre Channel

Item	Value Returned	Description
FC_HBA_FIRMWARE_REV	String	Firmware revision information of a Fibre Channel host bus adapter. A null string is returned for all other devices
FC_NODE_NAME	String	The Fibre Channel host bus adapter node name
FC_PORT_NAME	String	The Fibre Channel host bus adapter node name
WWID	String	Worldwide Identifier for a Fibre Channel device

SCSI

Item	Value Returned	Description
SCSI_DEVICE_FIRMWARE_REV	String	Firmware revision number of a SCSI disk or SCSI tape. A null string is returned for any other device

Shadow sets

Item	Value Returned	Description
SHDW_CATCHUP_COPYING	String	TRUE or FALSE to indicate whether the device is a member that is the target of a full copy operation
SHDW_COPIER_NODE	String	The name of the node that is actively performing the copy or merge operation
SHDW_DEVICE_COUNT	Integer	The total number of devices in the virtual unit, including devices being added as copy targets
SHDW_GENERATION	String	The current internal revision number for the virtual unit. This value is subject to change
SHDW_MASTER	String	TRUE or FALSE to indicate whether the device is a virtual unit
SHDW_MASTER_MBR	String	The name of the master member unit that will be used for merge and copy repair operations and for shadow set recovery operations
SHDW_MASTER_NAME	String	Device name of the virtual unit that represents the shadow set of which the specified device is a member. F$GETDVI returns a null string ("") if the specified device is not a member, or is itself a virtual unit
SHDW_MBR_COPY_DONE	String	The percentage of the copy operation completed on this member unit
SHDW_MBR_COUNT	Integer	The number of full source members in the virtual unit. Devices being added as copy targets are not full source members
SHDW_MBR_MERGE_DONE	String	The percentage of the merge operation completed on this member unit
SHDW_MBR_READ_COST	String	The current value set for the member unit. This value can be modified to use a user-specified value
SHDW_MEMBER	String	TRUE or FALSE to indicate whether the device is a shadow set member
SHDW_MERGE_COPYING	String	TRUE or FALSE to indicate whether the device is a merge member of the shadow set
SHDW_MINIMERGE_ENABLE	String	A value of TRUE indicates that the virtual unit will undergo a mini-merge, not a full merge, if a system in the cluster crashes
SHDW_NEXT_MBR_NAME	String	Device name of the next member in the shadow set. If you specify a virtual unit, F$GETDVI returns the device name of a member of the shadow set. If you specify the name of a shadow set member unit with the device name and item arguments, F$GETDVI returns the name of the "next" member unit or a null string if there are no more members. To determine all the members of a shadow set, first specify the virtual unit to F$GETDVI; on subsequent calls, specify the member name returned by the previous F$GETDVI call until it has finished, when it returns a null member name. The device name includes the allocation class if the allocation class is not zero; otherwise it includes the device name of the disk controller
SHDW_READ_SOURCE	String	The name of the member unit that will be used for reads at this time. The unit with the lowest sum total of its queue length and read cost is used. This is a dynamic value
SHDW_SITE	Integer	The site value for the specified device. This value is set by the SET DEVICE or SET SHADOW command
SHDW_TIMEOUT	Integer	The user-specified timeout value set for the device. If the user has not set a value by using the SETSHOSHADOW utility, the value of the SYSGEN parameter SHADOW_MBR_TMO is used for member units and the value of MVTIMEOUT is used for virtual units

Multipath

Item	Value Returned	Description
MULTIPATH	String	TRUE or FALSE to indicate whether the device is a member of a multipath set
ALT_HOST_AVAIL	String	TRUE or FALSE to indicate whether the host serving the alternate path is available
ALT_HOST_NAME	String	Name of the host serving the alternate path
ALT_HOST_TYPE	String	Hardware type of the host serving the alternate path
AVAILABLE_PATH_COUNT	Integer	Number of available, working paths for a multipath-capable device
HOST_AVAIL	String	TRUE or FALSE to indicate whether the host serving the primary path is available
HOST_COUNT	Integer	Number of hosts that make the device available to other nodes in the OpenVMS Cluster
HOST_NAME	String	Name of the host serving the primary path
HOST_TYPE	String	Hardware type of the host serving the primary path
MPDEV_AUTO_PATH_SW_CNT	Integer	Number of times a multipath device has automatically switched paths because of an I/O error or as the result of automatically "failing back" to a local path from a remote path once the local path became available
MPDEV_CURRENT_PATH	String	Current path name for multipath devices. If the device is not part of a multipath set, this lexical returns the name of the device path if the class driver for this device supports path names. SYS$DKDRIVER, SYS$DUDRIVER, SYS$MKDRIVER, and SYS$GKDRIVER support path names. Returns a null string if the class driver for the device does not support path names
MPDEV_MAN_PATH_SW_CNT	Integer	Number of times a multipath device has manually switched paths because of a SET DEVICE /PATH /SWITCH command or use of the $SET_DEVICE system service
PATH_AVAILABLE	String	TRUE or FALSE to indicate whether the specified path is available. This item code is typically used with the pathname parameter. If the pathname parameter is omitted, information about the current path of the multipath device is returned
PATH_NOT_RESPONDING	String	TRUE or FALSE to indicate whether the specified path is marked as not responding. This item code is typically used with the pathname parameter. If the pathname parameter is omitted, information about the current path of the multipath device is returned
PATH_POLL_ENABLED	String	TRUE or FALSE to indicate whether the specified path is enabled for multipath polling. This item code is typically used with the pathname parameter. If the pathname parameter is omitted, information about the current path of the multipath device is returned
PATH_SWITCH_FROM_TIME	String	Time from which this path was switched, either manually or automatically. This item code is typically used with the pathname parameter. If the pathname parameter is omitted, information about the current path of the multipath device is returned
PATH_SWITCH_TO_TIME	String	Time to which this path was switched, either manually or automatically. This item code is typically used with the pathname parameter. If thepathname parameter is omitted, information about the current path of the multipath device is returned
PATH_USER_DISABLED	String	TRUE or FALSE to indicate whether the specified path has been disabled using the SET DEVICE /PATH /NOENABLE command. This item code is typically used with the pathname parameter. If thepathname parameter is omitted, information about the current path of the multipath device is returned
TOTAL_PATH_COUNT	Integer	Number of paths for a multipath-capable device

Network devices

Item	Value Returned	Description
NET	String	TRUE or FALSE to indicate whether the device is a network device
LAN_ALL_MULTICAST_MODE	String	TRUE or FALSE to indicate whether the device is enabled to receive all multicast packets rather than only packets addressed to enabled multicast addresses
LAN_AUTONEG_ENABLED	String	TRUE or FALSE to indicate whether the device is set to autonegotiate the speed and duplex settings
LAN_DEFAULT_MAC_ADDRESS	String	The default MAC (media access control) address of the device
LAN_FULL_DUPLEX	String	TRUE or FALSE to indicate whether the device is operating in full-duplex mode
LAN_JUMBO_FRAMES_ENABLED	String	TRUE or FALSE to indicate whether jumbo frames are enabled on the device
LAN_LINK_STATE_VALID	String	TRUE or FALSE to indicate whether or not the device driver for the LAN device correctly maintains the link status. The device drivers for the following devices do not maintain the link status: DEMNA, any TURBOchannel adapter, any PCMPIA Ring adapter, Galaxy shared memory, TGEC, DE205, DE422, DE425, DE434, DE435, DE500 (the -XA and -AA variants; only the -BA variant is supported.)
LAN_LINK_UP	String	TRUE or FALSE to indicate whether the link is up. This item code is valid only for the template device (that is, unit number 0); this item returns 0 if used with a non-template LAN device. This item is supported only on newer adapters; to determine whether or not a particular device supports LAN_LINK_UP, you must first use F$GETDVI with the item LAN_LINK_STATE_VALID. See that item description for more information. If LAN_LINK_UP is used on an adapter that does not maintain the link status, the returned status will be SS$_UNSUPPORTED.
LAN_MAC_ADDRESS	String
LAN_PROMISCUOUS_MODE	String	TRUE or FALSE to indicate whether the device is enabled to receive all packets, rather than only packets addressed to the MAC addresses and to enabled multicast addresses
LAN_PROTOCOL_NAME	String	The name of the LAN protocol running on the device
LAN_PROTOCOL_TYPE	String	The type of the LAN protocol running on the device
LAN_SPEED	Integer	The speed of the LAN device, in units of megabits per second. Valid values are 4, 10, 16, 100, 1000, and 10000
SET_HOST_TERMINAL	String	TRUE or FALSE to indicate whether the device is a remote terminal for a SET HOST session from a remote node

Printers

Item	Value Returned	Description
QLEN	Integer	The queue length for the device. This value is the number of I/O requests already in the driver --- not the depth of the I/O pending queue
SPL	String	TRUE or FALSE to indicate whether the device is being spooled
SPLDEVNAM	String	Name of the device being spooled

Terminals

Item	Value Returned	Description
TRM	String	TRUE or FALSE to indicate whether the device is a terminal
TT_ACCPORNAM	String	The terminal server name and port name
TT_ALTYPEAHD	String	TRUE or FALSE to indicate whether the terminal has an alternate type-ahead buffer
TT_ANSICRT	String	TRUE or FALSE to indicate whether the terminal is an ANSI CRT terminal
TT_APP_KEYPAD	String	TRUE or FALSE to indicate whether the keypad is in applications mode
TT_AUTOBAUD	String	TRUE or FALSE to indicate whether the terminal has automatic baud rate detection
TT_AVO	String	TRUE or FALSE to indicate whether the terminal has a VT100-family terminal display
TT_BLOCK	String	TRUE or FALSE to indicate whether the terminal has block mode capability
TT_BRDCSTMBX	String	TRUE or FALSE to indicate whether the terminal uses mailbox broadcast messages
TT_CHARSET	Integer	A bitmap indicating the coded character set supported by the terminal
TT_CRFILL	String	TRUE or FALSE to indicate whether the terminal requires fill after a carriage return
TT_CS_HANGUL	String	TRUE or FALSE to indicate whether the terminal supports the DEC Korean coded character set
TT_CS_HANYU	String	TRUE or FALSE to indicate whether the terminal supports the DEC Hanyu coded character set
TT_CS_HANZI	String	TRUE or FALSE to indicate whether the terminal supports the DEC Hanzi coded character set
TT_CS_KANA	String	TRUE or FALSE to indicate whether the terminal supports the DEC Kana coded character set
TT_CS_KANJI	String	TRUE or FALSE to indicate whether the terminal supports the DEC Kanji coded character set
TT_CS_THAI	String	TRUE or FALSE to indicate whether the terminal supports the DEC Thai coded character set
TT_DECCRT	String	TRUE or FALSE to indicate whether the terminal is a DIGITAL CRT terminal
TT_DECCRT2	String	TRUE or FALSE to indicate whether the terminal is a DIGITAL CRT2 terminal
TT_DECCRT3	String	TRUE or FALSE to indicate whether the terminal is a DIGITAL CRT3 terminal
TT_DECCRT4	String	TRUE or FALSE to indicate whether the terminal is a DIGITAL CRT4 terminal
TT_DIALUP	String	TRUE or FALSE to indicate whether the terminal is connected to dialup
TT_DISCONNECT	String	TRUE or FALSE to indicate whether the terminal can be disconnected
TT_DMA	String	TRUE or FALSE to indicate whether the terminal has direct memory access (DMA) mode
TT_DRCS	String	TRUE or FALSE to indicate whether the terminal supports loadable character fonts
TT_EDIT	String	TRUE or FALSE to indicate whether the edit characteristic is set
TT_EDITING	String	TRUE or FALSE to indicate whether advanced editing is enabled
TT_EIGHTBIT	String	TRUE or FALSE to indicate whether the terminal uses the 8-bit ASCII character set
TT_ESCAPE	String	TRUE or FALSE to indicate whether the terminal generates escape sequences
TT_FALLBACK	String	TRUE or FALSE to indicate whether the terminal uses the multinational fallback option
TT_HALFDUP	String	TRUE or FALSE to indicate whether the terminal is in half-duplex mode
TT_HANGUP	String	TRUE or FALSE to indicate whether the hangup characteristic is set
TT_HOSTSYNC	String	TRUE or FALSE to indicate whether the terminal has host/terminal communication
TT_INSERT	String	TRUE or FALSE to indicate whether insert mode is the default line editing mode
TT_LFFILL	String	TRUE or FALSE to indicate whether the terminal requires fill after a line feed
TT_LOCALECHO	String	TRUE or FALSE to indicate whether the local echo characteristic is set
TT_LOWER	String	TRUE or FALSE to indicate whether the terminal has the lowercase characters set
TT_MBXDSABL	String	TRUE or FALSE to indicate whether mailboxes associated with the terminal will receive unsolicited input notification or input notification
TT_MECHFORM	String	TRUE or FALSE to indicate whether the terminal has mechanical form feed
TT_MECHTAB	String	TRUE or FALSE to indicate whether the terminal has mechanical tabs and is capable of tab expansion
TT_MODEM	String	TRUE or FALSE to indicate whether the terminal is connected to a modem
TT_MODHANGUP	String	TRUE or FALSE to indicate whether the modify hangup characteristic is set
TT_NOBRDCST	String	TRUE or FALSE to indicate whether the terminal will receive broadcast messages
TT_NOECHO	String	TRUE or FALSE to indicate whether the input characters are echoed
TT_NOTYPEAHD	String	TRUE or FALSE to indicate whether data must be solicited by a read operation
TT_OPER	String	TRUE or FALSE to indicate whether the terminal is an operator terminal
TT_PAGE	String	Terminal page length
TT_PASTHRU	String	TRUE or FALSE to indicate whether PASSALL mode with flow control is available
TT_PHYDEVNAM	String	Physical device name associated with a channel number or virtual terminal
TT_PRINTER	String	TRUE or FALSE to indicate whether there is a printer port available
TT_READSYNC	String	TRUE or FALSE to indicate whether the terminal has read synchronization
TT_REGIS	String	TRUE or FALSE to indicate whether the terminal has ReGIS graphics
TT_REMOTE	String	TRUE or FALSE to indicate whether the terminal has established modem control
TT_SCOPE	String	TRUE or FALSE to indicate whether the terminal is a video screen display
TT_SECURE	String	TRUE or FALSE to indicate whether the terminal can recognize the secure server
TT_SETSPEED	String	TRUE or FALSE to indicate whether you cannot set the speed on the terminal line
TT_SIXEL	String	TRUE or FALSE to indicate whether the sixel is supported
TT_SYSPWD	String	TRUE or FALSE to indicate whether the system password is enabled for a particular terminal
TT_TTSYNC	String	TRUE or FALSE to indicate whether there is terminal/host synchronization
TT_WRAP	String	TRUE or FALSE to indicate whether a new line should be inserted if the cursor moves beyond the right margin

Miscellaneous

Allocation and mounting

Item	Value Returned	Description
ALL	String	TRUE or FALSE to indicate whether the device is allocated
FOR	String	TRUE or FALSE to indicate whether the device is mounted using the /FOREIGN qualifier
DMT	String	TRUE or FALSE to indicate whether the device is marked for dismount
MNT	String	TRUE or FALSE to indicate whether the device is mounted
MOUNT_TIME	String	Time at which the volume was mounted. For volumes mounted in a cluster, only the time of the initial mount is recorded; the time of any subsequent mount is not recorded
MOUNTCNT	Integer	Number of times the volume has been mounted on the local system. The value of MOUNTCNT displayed by the SHOW DEVICE command is the total of all mounts of the volume across all members of the cluster
MOUNTCNT_CLUSTER	Integer	Number of times the volume has been mounted in the cluster. The value of MOUNTCNT displayed by the SHOW DEVICE command is the total of all mounts of the volume across all members of the cluster
MOUNTVER_ELIGIBLE	String	TRUE or FALSE to indicate whether the volume is eligible to undergo mount verification. A volume mounted with either the /FOREIGN or /NOMOUNT_VERIFICATION qualifier is not subject to mount verification
MVSUPMSG	String	TRUE or FALSE to indicate whether mount verification OPCOM messages are currently being suppressed on this device. See the MVSUPMSG_INTVL and MVSUPMSG_NUM system parameters for more information on the suppression of mount verification messages

Device information

Item	Value Returned	Description
ALLOCLASS	Longword integer	Allocation class of the host
ALLDEVNAM	String	Allocation class device name
DEVCLASS	Integer	Device class
DEVLOCKNAM	String	A unique lock name for the device
DEVNAM	String	Device name
DEVTYPE	Integer	Device type
FULLDEVNAM	String	Fully qualified device name

Other

Item	Value Returned	Description
ACPPID	String	Ancillary control process (ACP) identification
ACPTYPE	String	ACP type code, as one of the following strings: F11V1, F11V2, F11V3, F11V4, F11V5, F64, HBS, JNL, MTA, NET, REM, UCX, or ILLEGAL. The ACPTYPE item returns ILLEGAL if the device is not mounted or is mounted using the /FOREIGN qualifier or the ACPTYPE is not currently defined.
AVL	String	TRUE or FALSE to indicate whether the device is available for use.
CCL	String	TRUE or FALSE to indicate whether the device is a carriage control device.
DEVBUFSIZ	Integer	Device buffer size. For terminals, this reflects terminal width.
DEVCHAR	Integer	Device characteristics
DEVCHAR2	Integer	Additional device characteristics
DEVDEPEND	Integer	Device-dependent information
DEVDEPEND2	Integer	Additional device-dependent information
DEVICE_TYPE_NAME	String	Device type name. Note that if the device is a SCSI tape or disk, the device type name is retrieved directly from the device
DEVSTS	String	Device-dependent status information
DFS_ACCESS	String	TRUE or FALSE to indicate whether the device is a virtual disk connected to a remote Distributed File System (DFS) server.
DUA	String	TRUE or FALSE to indicate whether the device is a generic device.
ELG	String	TRUE or FALSE to indicate whether the device has error logging enabled.
ERRCNT	Integer	Error count of the device. If the error count has been reset with the SET DEVICE /RESET=ERRCNT command, you can use the SHOW DEVICE/FULL command to display the date and time that the error count was reset. If the pathname parameter is specified, only the error count for that path is returned. If the pathname parameter is omitted, the summation of the error counts for all paths in a multipath device is returned.
ERROR_RESET_TIME	String	Time at which the error count was reset.
EXISTS	String	TRUE or FALSE to indicate whether the device exists on the system.
FOD	String	TRUE or FALSE to indicate whether the device is a files-oriented device.
GEN	String	TRUE or FALSE to indicate whether the device is a generic device.
IDV	String	TRUE or FALSE to indicate whether the device is capable of providing input.
LOCKID	Integer	Clusterwide lock identification.
MAILBOX_BUFFER_QUOTA	Integer longword	The current mailbox quota as an unsigned integer longword.
MAILBOX_INITIAL_QUOTA	Integer longword	The initial mailbox quota as an unsigned integer longword.
MBX	String	TRUE or FALSE to indicate whether the device is a mailbox.
MEDIA_ID	Integer	Nondecoded media ID.
MEDIA_NAME	String	Either the name of the disk or the tape type.
MEDIA_TYPE	String	Device name prefix.
ODV	String	TRUE or FALSE to indicate whether the device is capable of providing output.
OPCNT	Integer	Operation count of the device. Note that the operation count may have been reset with the SET DEVICE/RESET=OPCNT command. If the pathname parameter is specified, only the operation count for that path is returned. If the pathname parameter is omitted, the summation of the operation counts for all paths in a multipath device is returned.
OPR	String	TRUE or FALSE to indicate whether the device is an operator.
OWNUIC	String	User identification code (UIC) of the device owner.
PID	String	Process identification number of the device owner.
PREFERRED_CPU	Integer	Return argument is a 32-bit CPU bit mask with a bit set indicating the preferred CPU. A return argument containing a bit mask of zero indicates that no preferred CPU exists, either because Fast Path is disabled or the device is not a Fast Path capable device. The return argument serves as a CPU bit mask input argument to the $PROCESS_AFFINITY system service. The argument can be used to assign an application process to the optimal preferred CPU.
PREFERRED_CPU_BITMAP	String	A bitmap string of zeros and, at most, a single 1. The 1 in the bitmask represents the number of the CPU to which the device is affinitized. The length of the string determines by how many CPUs are on the system. If there is no 1 in the bitmap string, then either Fast Path is disabled systemwide, or the device is not Fast Path-capable.
PROT_SUBSYSTEM_ENABLED	String	TRUE or FALSE to indicate whether the volume is mounted with protected subsystems enabled.
RCK	String	TRUE or FALSE to indicate whether the device has read checking enabled.
RCT	String	TRUE or FALSE to indicate whether the disk contains RCT.
REC	String	TRUE or FALSE to indicate whether the device is record-oriented.
RECSIZ	Integer	Blocked record size.
REFCNT	Integer	Reference count of processes using the device.
REMOTE_DEVICE	String	TRUE or FALSE to indicate whether the device is a remote device.
RND	String	TRUE or FALSE to indicate whether the device allows random access.
RTM	String	TRUE or FALSE to indicate whether the device is a real-time device.
SERVED_DEVICE	String	TRUE or FALSE to indicate whether the device is a served device.
SHR	String	TRUE or FALSE to indicate whether the device is shareable.
STS	Integer	Status information.
SWL	String	TRUE or FALSE to indicate whether the device is software write-locked.
UNIT	Integer	The unit number.
WCK	String	TRUE or FALSE to indicate whether the device has write checking enabled.
XFC_DEPOSING	String	TRUE or FALSE to indicate whether the XFC volume depose operation is in progress or not.