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You must not install ISM on a computer in which a NetWorker server or a NetWorker client is already installed. If you attempt such an installation, it fails with the following message: The ISM setup script detected that another storage manager is installed in /nsr, which conflicts with ISM. If you want to setup ISM, you need to de-install the other storage manager and then run $INFORMIXDIR/bin/ism_startup -init.

For ISM to be installed on a computer that has a NetWorker server or client on it, the NetWorker server or client has to be completely uninstalled first.

To uninstall your currently running ISM on UNIX:

1. Log in as user informix.

2. Change to the ISM binaries directory: 

cd $INFORMIXDIR/bin

3. Become user root.

4. Shut down the ISM daemons: 

./ism_shutdown -q

5. Verify that the daemons are shut down: 

ps -ef | grep nsr

6. Move the ISM executables to a temporary directory: 

mkdir ./ism.tmp 

mv ism* ism.tmp 

mv nsr* ism.tmp 

mv mm* ism.tmp 

mv save* ism.tmp 

mv scanner ism.tmp 

mv usam ism.tmp 

mv recover ism.tmp 

7. Move the ISM catalogs to a temporary directory:

cd $INFORMIXDIR 

mv ism ism.bak 

8. Remove the symbolic link to the ISM catalogs: 

rm /nsr 

9. Remove the call to ism_catalog from the $INFORMIXDIR/onbar script.

Now you are ready to install your new storage manager on UNIX. 

Tip: The ism_shutdown command shuts down the ISM daemons nsrd, nsrexecd, nsrmmdbd, and nsrindexd. It does not uninstall ISM, that is, it does not remove the ISM executables in $INFORMIXDIR/bin, the symbolic link /nsr, or the various ISM files in $INFORMIXDIR/ism.

To start ISM on UNIX for the first time, issue the ism_startup -init command. The following shell script is an example of a simple setup for making on–Bar storage-space and logical-log backups to disk files:

#!/usr/bin/ksh

# setup for ISM storage manager

INFORMIXDIR=/data/informix

export INFORMIXDIR

echo "ISM setup begins"

# the user must edit these two lines to select

# appropriate disk locations for storage manager use.

SM_DISKDEV1=/backups/dbspaces

SM_DISKDEV2=/backups/logfiles

export SM_DISKDEV1

export SM_DISKDEV2

# start ISM server

echo "initalize ISM server, must be done as root"

$INFORMIXDIR/bin/ism_startup -init

$INFORMIXDIR/bin/ism_add -admin informix@server (server=hostname)

Important: To make informix the ISM user and thereby ensure informix has access to conduct ISM operations during daily routines, you must run the following command after any ism_startup -init or ISM installation:

# create some devices and media

# the ISM user, defined in ism_add -admin, can do these tasks

echo "create and mount ISM devices and pools"

ism_add -device $SM_DISKDEV1 -type file

ism_add -device $SM_DISKDEV2 -type file

ism_op -label $SM_DISKDEV1 -pool ISMDiskData -volume ISMData

ism_op -label $SM_DISKDEV2 -pool ISMDiskLogs -volume ISMLogs

ism_op -mount $SM_DISKDEV1

ism_op -mount $SM_DISKDEV2

echo "end of ISM setup"