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

Contents
SCF Reference Manual for the Storage Subsystem—529937-008
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7. Managing Magnetic Disks (continued)
7. Managing Magnetic Disks (continued)
Resetting a Magnetic Disk 7-11
Considerations for RESET DISK 7-12
Resetting One Magnetic Disk 7-12
Resetting a Group of Magnetic Disks 7-13
Sparing a Defective Sector 7-14
Automatic Sector Reallocation 7-14
Enabling Automatic Sector Reallocation 7-14
Disabling Automatic Sector Reallocation 7-14
Controlling Whether $ZRD9 Starts Automatically After a System Load 7-15
Sparing a Sector Manually 7-15
Correcting Doubly Allocated File Extents 7-17
Considerations for the REBUILDDFS attribute 7-17
Identifying Doubly Allocated File Extents 7-17
Rebuilding the Disk Free Space Table 7-17
Troubleshooting Doubly Allocated File Extents 7-18
Replacing the Bootstrap Program 7-19
Replacing the Disk Bootstrap Program on a Mirrored Volume (NonStop S-Series
Servers) 7-19
Replacing the Disk Bootstrap Program on a Nonmirrored Volume (NonStop
S-Series Servers) 7-21
Enabling and Disabling File Opens on a Magnetic Disk 7-22
Preventing File Opens on a Magnetic Disk 7-22
Allowing File Opens on a Magnetic Disk 7-23
Swapping Processors for a Disk 7-24
PRIMARY DISK Consideration 7-24
An Example for G06.11 and Later RVUs 7-24
Changing the Active Path for a Magnetic Disk
7-27
8. Disk Load Balancing
Disk Load Balancing Between Fabrics 8-1
Disk Load Balancing Between Processors 8-2
Guidelines for All G-Series RVUs 8-3
Guidelines for G06.11 and Later RVUs 8-3
Topology Branch Example for G06.11 and Later RVUs 8-3
A Closer Look at Eight Disks 8-5
Disk Load Balancing on G06.10 and Earlier RVUs 8-6
Understanding SAC Ownership 8-6
Guidelines for G06.10 and Earlier RVUs 8-6