SCF Reference Manual for the Storage Subsystem (G06.27+, H06.04+)

Managing Magnetic Disks
SCF Reference Manual for the Storage Subsystem—529937-008
7-16
Sparing a Sector Manually
1. Confirm that the address reported in the error message also appears in an INFO
DISK, BAD report:
-> INFO $DATA00, BAD
2. Spare the sector containing the address identified in the BAD report.
-> CONTROL $DATA00-M, SPARE %H795C
The CONTROL command assigns an alternate sector for the data in the spared
sector and makes an entry into the defect log.
If either of these events occur during a spare operation, the specified sector is not
spared, and an error message is displayed:
•
All spare sectors on the disk are in use.
•
The added defect map is full.
In either case, you must replace the disk.
3. Verify the defective sector has been replaced:
-> INFO $DATA00, BAD
If the defective sector was spared, it no longer appears in the detailed report.