These release notes support Version 4.3.0 of the SequentLINK software product, which runs on the DYNIX/ptx® operating system, versions 4.2.3 and above. Read this document before you install, configure, or run this release of SequentLINK.
SequentLINK V4.3.0 runs on DYNIX/ptx V4.2.3 and above, on Symmetry® and NUMA-Q® systems.
SequentLINK V4.3.0 adds the following enhancements:
- Obtains error information using EES (Error Event Subsystem) on versions of the operating system that support EES.
- Recovers from temporary mail delivery problems which cause SequentLINK event mail to be returned to sender.
- Resends events periodically, even if a file has not changed, in order to recover from any mail failure that prevented mail delivery.
- Corrects a problem in the calculation of free space for very large disks that could incorrectly cause SequentLINK to halt.
- Returns additional system files to the Customer Support Center (CSC)
The documentation for SequentLINK consists of the following:
- SequentLINK V4.3.0 Release Notes
(this document)
- SequentLINK Customer's Manual
(1003-76610-00)
SequentLINK V4.3.0 requires the following:
- DYNIX/ptx operating system, version 4.2.3 or higher.
- ptx®/TCP/IP V4.0.3 or higher (for Internet E-mail only)
Performance Check Event Set Requirements
In order for SequentLINK V4.3.0 to collect performance data, the following requirements must be satisfied:
- DYNIX/ptx V4.4.2 or later
- ptx/PDC V1.1 or later
NOTE:
ptx/PDC may not have been installed by Sequent Manufacturing. If your system is running DYNIX/ptx V4.4.2 or later and you want SequentLINK to run Performance Check, ensure that ptx/PDC is installed.
NOTE:
ptx/PDC V1.1 is included in the release of DYNIX/ptx V4.4.4. ptx/PDC V1.0 (which is not sufficient to run Performance Check) was released with DYNIX/ptx V4.4.2. To collect performance data on systems with DYNIX/ptx V4.4.2 and SequentLINK V4.3.0, Version 1.1 of ptx/PDC must be installed.
OS Availability Event Requirements
The OS Availability Event uses information from the /var/adm/wtmp
file. Therefore, in order for this event to function properly, this file must exist and must be in this location. (There is a symbolic link to this file from /etc/wtmp
.)
Beginning with DYNIX/ptx V4.5.0, a new file holding only wtmp
accounting records was created. SequentLINK V4.3.0 will use this file when available, eliminating the need for /var/adm/wtmp
.
Cluster Availability Event Requirements
In order for SequentLINK to monitor cluster availability, the following requirements must be met:
- ptx/CLUSTERS V2.x is installed and configured.
- klogd
is running.
- OS Availability Event is enabled.
The Cluster Availability Event uses information from the most recent /usr/adm/ktlog
file. Therefore, in order for the Cluster Availability Event to function properly, this directory must exist and must be in this location.
SequentLINK has a minimal impact on your system's resources. Reboot or kernel reconfiguration is not necessary.
Disk space of 25MB is recommended for SequentLINK operation.
For transferring information to the CSC by means of UUCP:
No licensing for the use of SequentLINK is required. SequentLINK is distributed at no charge to customers having a current service contract.
No mailbugs currently exist that affect SequentLINK V4.3.0 operation.