Linux Installation Notes

4 Installation Notes

SCSI generic module required for device support

If you are running Data Protector Express under Linux, you must install the sg (SCSI generic) module for device support in Data Protector Express.

To verify that this module is loaded and running, issue the following command at a terminal prompt:

lsmod

sg should be listed in the list of running modules. If it is not listed, you must manually load this module so that Data Protector Express can communicate with tape devices. Consult your operating system documentation for instructions on manually loading the sg module.

Red Hat Enterprise Linux EXT3 hardware issue

If you are running Data Protector Express on Red Hat Enterprise Linux (RHEL) v3 or v4, a known hardware issue exists when you use the EXT3 journal or ﬁle system on certain hardware conﬁgurations. Update your Red Hat Enterprise Linux v3 or v4 installation to the latest kernel and jbd patches listed below to resolve this issue:

•jbd-1.1-multiarch-1

•kernel-2.6.9-11.EL (RHEL 4)

•kernel-2.4.21-37.EL (RHEL 3)

IDE/ATAPI Support

Data Protector Express supports the use of IDE/ATAPI tape devices. If your Linux distribution compiled the ide-tape.o module into the kernel, update the conﬁguration ﬁle and verify the conﬁguration to access these devices.

NOTE:

When Data Protector Express runs, it loads the ide-scsi module. This may cause the ide-cdrom module to fail to load, which may affect CD operation. To work around this problem, mount the CD as a SCSI device, even though it is an IDE device.

To update the conﬁguration ﬁle and verify the conﬁguration (LILO)

1.Add the following line to the end of each boot selection section in the /etc/lilo.conf ﬁle:

Installation Guide