When installing IBM WebSphere Application Server on a network file system, IBM Installation Manager fails
with an insufficient disk space error.
How could this be resolved?

A.
Increase disk space and try again.

B.
Delete temporary files and try again.

C.
Reboot operating system and try again.

D.
Disable disk space checking in the config.ini and try again.

Explanation:
On some network file systems, disk space might not be reported correctly at times; and you might need to
bypass disk-space checking and proceed with your installation.
To disable disk-space checking, specify the following system property in the config.ini file in IM_install_root/
eclipse/configuration and restart Installation Manager.
https://www.ibm.com/support/knowledgecenter/SSEQTP_9.0.0/
com.ibm.websphere.installation.base.doc/ae/tins_troubleshoot.html