MPX Installation Issues
- When installing SCO MPX 1.1 on a system already running SCO NFS it is
necessary to install SCO's Support Level Supplement LNG287, this fix is the one referred
to in the flysheet supplied with SCO MPX 1.1.
- When SCO MPX 1.1 has been installed on a system it is NOT necessary to
re-install SCO's Security and Printer supplement UNX 257.
- Dual Processor systems with SCO MPX have shown problems with backups,
particularly to the DDS unit. The symptom is that the process (usually cpio) sits in the
process table but does not accrue any CPU time and the orange activity light on the DDS
unit is off. No other symptoms occur and drive activity is unaffected. The process can be
re-started by doing a
tape amount
on the control device such as /dev/xct0 (the default). This will awaken
the DDS unit and processing will continue from where it stopped.
The problem does show on both backups and verifies and is intermittent.
The problem is most likely to be generic to tape devices but more prevalent on the DDS
given the amount and duration of the backups it makes. The problem does not affect the
stability of machines in any way.
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