Yes, you can define all packs as fullpack to MAINT, either with MDISK
statements in the CP directory, either with DEFINE MDISK commands.
When you create a standalone DDR tape, you can restore the tapes from the
bare metal. Creating an IPLable tape isn't difficult:
FILEDEF IN DISK IPL DDRXA S
FILEDEF OUT TAP1
MOVE IN OUT
You can test your tape in a virtual machine:
SYSTEM RESET
TERM CONMODE 3270
REW 181
IPL 181
If you want to test the whole process, you could dump the first two
cylinders of all your (or some) packs ("DUMP 0 1"). To test the restore
define 2 cylinder T-disks ("CP DEFINE T3390 addr 2")for each pack and so you
can get familiar with the DDR statements you need to restore (LEAVE, SKIP
etc options on INPUT statements).
Oh yes: try the restore in a simple general user, not in MAINT with access
to these fullpack minidisks, this to avoid the risk you enter a wrong DDR
OUTPUT command and restore to a real disk instead of a T-disk.
2010/2/25 Pluzhnikov Vsevolod <[email protected]>
> Hello, All!
>
> Help me please in understanding the correct way of backup/restore z/VM
> system (on CKD dasd). I’ll need to perform this because of disruptive
> upgrade of our DS8300.
>
> I’m testing now ddrxa.
>
> Is it possible to define all 3390 mod9 (540RES, 540SPL, 540PAG, USER…)
> dasd to maint as full-pack minidisks and just backup all of them on tape?
> Can I perform a restore with IPL from tape and just typing new dasd in
> output command for restore or it can be done only from z/VM ?
>
> Thanks in advance,
>
> Vsevolod
>
--
Kris Buelens,
IBM Belgium, VM customer support
