HP e3000 MPE/iX System Software Maintenance Manual (Release C.75.00) (30216-90344)

Appendix C
Managing Disk Space
Using Alternative Disk Space Allocation
191
Using Alternative Disk Space Allocation
Before starting UPDATE, reserve contiguous disk space in the file AXLDEV1.PUB.SYS. This amount is at least
60,000 sectors but may be larger. The prudent way to reserve this space is in one contiguous block. Reserving
this space in more than one block introduces a risk that Secondary Storage Manager (SSM) will allocate space
for files on LDEV 1 in a way that causes an “Out of contiguous disk space” condition during UPDATE. Always
try to reserve this contiguous disk space for UPDATE in one block.
However, if you cannot reserve all the disk space in one file on LDEV 1, the additional disk space required
beyond 60,000 sectors can be reserved in large contiguous sectors. The minimum size of any contiguous sector
piece must be 30,000 sectors.
NOTE Consult your HP Representative or the Response Center before you use this method to allocate
disk space. Your operating system is at risk of LDEV1 overflow while running. Performance
will be impacted. The operating system requires room to work. If it does not have enough, the
resource manager will start to shut your system down.
To reserve disk space sectors in sections:
1. For each section of 60,000 to 30,000 sectors:
:build axldev1 disk = 60000
:build axldev2 disk = 30000
:build axldevn disk = 30000
. . .
The minimum number of sectors for at least one section is 60,000. All other sections must be at least
30,000 sectors each.
2. Purge each axldev file you created. For example:
:purge axldev1
:purge axldev2
:purge axldev3
3. During the UPDATE, you will receive a disk space error message. Select OVERRIDE at the disk space
warning to continue with the process.
WARNING: UPDATE tried to find 60,000 sectors of contiguous disk
space on LDEV1 for its work, but it could only find nnnnnnn
sectors. Before continuing, refer to the Installation Manual for
instructions on collecting enough contiguous space on LDEV1 for
the update. If you still have questions after attempting the
procedures outlined in the manual, call your HP support
representative for help.
You may override this warning and continue with the update, but
HEWLETT-PACKARD STRONGLY DISCOURAGES THIS COURSE OF ACTION.
DO NOT override this warning unless you have a full backup
available and the time to REINSTALL your system. If UPDATE runs
out of space on LDEV1, you risk having to REINSTALL.
Override this warning message [OVERRIDE/NO; default = NO]?
4. Return to the procedure you were working on and continue with the instructions.