HP Tru64 Unix Release Notes for Version 5.1B-6 (5900-1150)

Authentication Choice Affects sftp Transfer Rate
The performance of secure FTP (sftp) will be always less than ftp due to the authentication
and encryption involved in sftp communication. The transfer rate of sftp depends on the type
of authentication it employs. You can achieve better transfer rate performance by choosing the
Message Authentication Code (MAC) algorithm hmac-md5 for authentication, but at the cost of
security. The default MAC is hmac-sha1, which is more secure than hmac-md5. See sftp(1) for
information about secure FTP and ssh2_config(4) for information about supported MACs and
ciphers.
Insight Manager Components Dump Core
Some Insight Manger components included in Tru64 UNIX Version 5.1B-6, such as cpq_mibs
and the config_hmmod and sysman_hmmod daemons, might core dump during reboots.
You can correct this problem by installing the latest version of the Insight Manager, Version 3.7.
You can download this version from the HP Insight Management Agents for Tru64 UNIX Web
site:
http://h30097.www3.hp.com/cma/
If you have not installed Version 3.7 and the Insight Manager processes do not run after you
reboot your system, restart them using the Insight Manger startup scripts.
Autoloader Firmware Upgrade Changes WWID
A firmware upgrade to v1.50 or N14r on the 1x8 Autoloader causes the WWID to change. As a
result, the existing device associated with the media changer is no longer accessible. For complete
details see the Customer Advisory available at:
http://h30097.www3.hp.com/unix/erp/c00753663.html
Smart Array Booting Problem Might Require Service Call
If when booting your system you see a message similar to the following, rebooting your system
may be able to re-enable the hardware:
Smart Array at ciss(1)not responding - disabled.
If the reboot fails, call your HP service representative to have the unit repaired.
Do Not Use dxarchiver to Verify Bootable Tape
Do not use dxarchiver command to verify a bootable tape. Instead, use the mt and restore
commands as follows:
# mt fsf 1
# restore -i <device>
The first command skips the first file on the tape.
When preparing for a btcreate session, verify the size of the file system to ensure that you
have sufficient tape volumes, depending on the maximum storage capacity of your tape device.
The btcreate command prompts you to load a new tape volume if it runs out of storage space.
Label the tapes in sequence.
securenets File Requires localhost Entry
If the /var/yp/securenets file is in use as part of NIS, it must contain the following localhost
entry:
255.255.255.255 127.0.0.1
If the /var/yp/securenets file is used without a localhost entry, you will see severe delays
on logins. See ypserv(8) for more information.
26 Release Notes