NonStop S-Series Planning and Configuration Guide (G06.29+)

System Components
HP NonStop S-Series Planning and Configuration Guide—523303-021
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Disk Management
Ensure That Alternate Volume Names Are Unique
If two disks share the same volume name and alternate volume name, you cannot
access both of those disks at the same time.
This restriction also applies to $SYSTEM. To ensure that both $SYSTEM volumes are
always accessible, verify that every disk in the system has a unique alternate volume
name.
System Load Disks Are Automatically Renamed
If an alternate $SYSTEM disk is used to load a system, that disk’s name is
automatically changed to $SYSTEM in the configuration records of CONFIG file. The
configuration records for that disk also become fully mirrored if they are not already.
Any other disk configuration records named $SYSTEM are renamed with a unique disk
name.
T6586AAI SPR and Alternate System Disk
If you have not installed the T6586AAI SPR on your system and if you use an alternate
system disk for a system load, the system disks will not be able to use the
configuration files that are created during this load.
If this situation occurs, update the CONFIG file:
1. Move the CONFIG file to a disk in slot 11 or 12 of group 01.
2. Perform a system load with a SYSnn on which you have installed the T6586AAI
SPR.
Disk Drives Are Shipped Already Formatted
Disk drives you receive from HP are already formatted; there is no disk format utility.
You must return any disk drive that requires formatting to HP. For information about
initial configurations of disk drives, refer to Internal Disk Drives on page 8-4
Disks Can Be Interleaved
Beginning with the G06.06 RVU, mirrored disk volumes can be interleaved by installing
each half of the mirrored disk volume in a separate enclosure. For more information,
see the Enclosure Interleaving for Storage Devices on page 9-9.
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SCSI ID Primary Slot Mirror Slot (page2of2)