NonStop Operations Guide for H-Series and J-Series RVUs

1. If a path is down due to a ServerNet fabric failure, determine the affected paths. From an
SCF prompt:
-> STATUS DISK $*-*, SUB MAGNETIC
The output indicates:
• $DATA06-M and $DATA06-MB are stopped in the DOWN substate.
• $WD8-M and $WD8-MB are stopped in the HARDOWN substate.
• $DATA00-P and $DATA00-B are stopped in the HARDDOWN substate.
STORAGE - Status DISK \ALPHA12.$DATA06-*
LDev Path Status State Substate Primary Backup
PID PID
116 PRIMARY ACTIVE STARTED 0,285 1,268
116 BACKUP INACTIVE STARTED 0,285 1,268
116 MIRROR INACTIVE STOPPED DOWN 0,285 1,268
116 MIRROR-BACKUP INACTIVE STOPPED DOWN 0,285 1,268
STORAGE - Status DISK \ALPHA12.$WD8-*
LDev Path Status State Substate Primary Backup
PID PID
96 PRIMARY ACTIVE STARTED 0,23 1,12
96 BACKUP INACTIVE STARTED 0,23 1,12
96 MIRROR INACTIVE STOPPED HARDDOWN 0,23 1,12
96 MIRROR-BACKUP INACTIVE STOPPED HARDDOWN 0,23 1,12
STORAGE - Status DISK \ALPHA12.$DATA00-*
LDev Path Status State Substate Primary Backup
PID PID
121 PRIMARY INACTIVE STOPPED HARDDOWN 0,284 1,267
121 BACKUP INACTIVE STOPPED HARDDOWN 0,284 1,267
121 MIRROR ACTIVE STARTED 0,284 1,267
121 MIRROR-BACKUP INACTIVE STARTED 0,284 1,267
Total Errors = 0 Total Warnings = 9
2. Reset disk drives that are in the HARDDOWN substate. At an SCF prompt:
-> RESET DISK $volume
For example:
-> RESET DISK $WD8
Resetting a disk in the HARDDOWN substate places it in the DOWN substate.
3. Restart the disk. At an SCF prompt:
-> START DISK $volume
If the disk does not start, the disk might need replacement. If neither half of a mirrored volume
starts, the database might need recovery. Contact your service provider.
Recovery Operations for a Nearly Full Database File
When a database file is 90 percent full or more, you can modify the file extents dynamically with
FUP or perform other procedures according to your system policies.
NOTE: Allocating additional extents to any file causes that file to take up more disk space. Before
you change the maximum allowable extents for any file, as shown in the next example, check your
local procedures to determine whether this is the appropriate action for you to take.
To allocate additional extents to the file MEMOS:
> FUP
Recovery Operations for Disk Drives 153