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TSM SpaceMan entry in inittab


I have seen this entry in /etc/inittab

[root@server:/] cat /etc/inittab|grep dsm
adsmsmext:2:wait:/etc/rc.jfs2hsm > /dev/console 2>&1 #

This also see these process running I believe are from the entry above..
[root@server:/] ps -ef|grep -i dsm
    root 5570738       1   0   Mar 05      -  0:00 /usr/tivoli/tsm/client/hsm/bin/dsmrootd
    root 5701812       1   0   Mar 05      -  1:58 /usr/tivoli/tsm/client/hsm/bin/dsmmonitord
    root 6029496       1   0   Mar 05      -  0:00 /usr/tivoli/tsm/client/hsm/bin/dsmrecalld
    root 6226110       1   0   Mar 05      -  4:39 /usr/tivoli/tsm/client/hsm/bin/dsmscoutd
    root 6291650 6029496   0   Mar 05      - 50:59 /usr/tivoli/tsm/client/hsm/bin/dsmrecalld
    root 6357186 6029496   0   Mar 05      -  0:00 /usr/tivoli/tsm/client/hsm/bin/dsmrecalld

The question is, are these daemons need on our AIX?
Are these daemon related with TSM client?
1 Solution

you installed the HSM component of the TSM client.

HSM stands for "Hierarchical Space Management".  
Basically, HSM moves ("migrates")  files which adhere to certain criteria (available FS space, file age, file size etc,.) to TSM storage, leaving just a stub of a configurable size in the filesystem.
By default, only those eligible files are migrated which already have a backup in TSM.

The idea is to save space in the filesystem.

dsmrootd - provides non-root user support for the HSM client
dsmscoutd - scans the filesystem for eligible files in regular intervals and starts migration if required
dsmmonitord - monitors the filesystem's space usage and starts migration if required
dsmrecalld (master + 2 slaves) - recalls migrated files from TSM if a user tries to access such a file

Those daemons are required if (and only if) you're going to employ the space management feature.

But since you don't even know what HSM is I rather think that you accidentally installed this component and don't really want to use it.
If this is true better uninstall it, to avoid unnecessary filesystem scans and other background activity caused by the HSM daemons.

By the way, you should put these TSM questions into both the "Unix" and "Backup and Restore" topic areas, if it's not too much of a hassle.

sminfoAuthor Commented:
jee.. your are right... I'm going to uninstall all this HSM componet right now...

No problem at all to copy the question on "Backup Restore" area.

Thanks again..
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