SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

Disabling Automatic Sector Reallocation
If you want to disable automatic sector reallocation, you must disable it for all disks; you cannot
enable or disable it for specific disks.
To disable automatic sector reallocation:
> STOP $ZRD9
You might want to disable $ZRD9 if you choose to manually spare a sector.
Controlling Whether $ZRD9 Starts Automatically After a System Load
• To ensure that $ZRD9 does not start automatically after a system load, do one of the following:
Stop the process and reconfigure it to be started manually:◦
-> ABORT PROCESS $ZZKRN.#ROUTING-DIST
-> ALTER PROCESS $ZZKRN.#ROUTING-DIST, STARTMODE MANUAL
◦ Stop the process and delete it:
-> ABORT PROCESS $ZZKRN.#ROUTING-DIST
-> DELETE PROCESS $ZZKRN.#ROUTING-DIST
• To reenable $ZRD9 automatic startup after system load:
Reverse the ALTER command and start the process:◦
-> ALTER PROCESS $ZZKRN.#ROUTING DIST, &
-> STARTMODE APPLICATION
-> START PROCESS $ZZKRN.#ROUTING-DIST
◦ Reverse the DELETE command and start the process:
-> ADD PROCESS $ZZKRN.#ROUTING-DIST, AUTORESTART 0, &
-> BACKUPCPU 1, DEFAULTVOL $SYSTEM.ZSERVICE, &
-> HIGHPIN ON, HOMETERM $ZHOME, NAME $TSMRD, &
-> PRIMARYCPU 0, PRIORITY 150, &
-> PROGRAM $SYSTEM.SYSTEM.TACL, &
-> INFILE $SYSTEM.ZTSM.INITRD, STARTMODE APPLICATION, &
-> TYPE OTHER, USERID SUPER-ID
-> START PROCESS $ZZKRN.#ROUTING-DIST
Sparing a Sector Manually
If automatic sector reallocation is disabled or if it fails to spare a defective sector because the error
is intermittent, you might have to spare the sector manually.
If you get an error message reporting the address of a bad sector, try to verify that the message
is caused by a disk media error before manually sparing the sector by using the CONTROL DISK,
SPARE command
CAUTION: Do not spare sector %H2 or sector %H3 before talking to your service provider.
Confirm that the address reported in the error message also appears in an INFO DISK, BAD report:
-> INFO $DATA00, BAD
Sparing a Defective Sector 105