Sun Microsystems 96257 manual Virtual Tape Drive Mapping and Host Addressing

Specifications and Additional Information

■Virtual Tape Drive Mapping and Host Addressing

A VSM5-VTSS can be configured with up to 256 virtual tape drives (VTDs). During VTSS installation, all 256 available VTDs are mapped as shown in Table A-3below. Mapping of all available VTDs is required by VTSS microcode, and applies whether the VTDs are ulti- mately defined or undefined.

Table A-3. Mapping Parameters for 256 Virtual Tape Drives (VTDs)

Sequential Device	Parameters	Sequential Device	Parameters
Numbers		Numbers
	VCU0		VCU8
0 - 15	DEV 0-255	128 -143	DEV 0-255
	FDID 00-0F		FDID 80-8F
	CUADD=0		CUADD=8
	VCU1		VCU9
16 - 31	DEV 0-255	144 -159	DEV 0-255
	FDID 10-1F		FDID 90-9F
	CUADD=1		CUADD=9
	VCU2		VCUA
32 - 47	DEV 0-255	160 -175	DEV 0-255
	FDID 20-2F		FDID A0-AF
	CUADD=2		CUADD=A
	VCU3		VCUB
48 - 63	DEV 0-255	176 -191	DEV 0-255
	FDID 30-3F		FDID B0-BF
	CUADD=3		CUADD=B
	VCU4		VCUC
64 -79	DEV 0-255	192 -207	DEV 0-255
	FDID 40-4F		FDID C0-CF
	CUADD=4		CUADD=C
	VCU5		VCUD
80 -95	DEV 0-255	208 -223	DEV 0-255
	FDID 50-5F		FDID D0-DF
	CUADD=5		CUADD=D
	VCU6		VCUE
96 -111	DEV 0-255	224 -239	DEV 0-255
	FDID 60-6F		FDID E0-EF
	CUADD=6		CUADD=E
	VCU7		VCUF
112 -127	DEV 0-255	240 -255	DEV 0-255
	FDID 70-7F		FDID F0-FF
	CUADD=7		CUADD=F

A-66	Sun Confidential: Internal Only	96257
	Revision A