User's Manual

60 Configuring FSE
Linux specific
NOTE: You must be logged on to the system as root in order to execute FSE commands.
Windows specific
NOTE: You need administrative privileges to perform the configuration tasks. These privileges are granted
only if you are either locally logged to the system as Administrator (recommended) or using a remote
access software that supports logging in with the real Administrator account. The Windows native Remote
Desktop tool, for example, may be unsuitable for these tasks, since it uses a different Administrator account
when logging in remotely.
Step 1: configuring FSE libraries and FSE drives
About SCSI identification
For the FSE library and drive configuration, you need to identify the SCSI addresses of libraries and drives
that will be used by the FSE implementation. Use the fse_scsi --scan command to find addresses. The
format of the identification strings that are displayed depend on the operating system where the
fse_scsi command is run.
NOTE: A particular FSE drive is related to a single FSE library.
Linux specific
On Linux platform, FSE uses a SCSI generic (sg) driver for accessing SCSI libraries and drives. The sg
driver is an upper level SCSI subsystem device driver that enables user applications to send SCSI
commands to relevant devices. It is capable of addressing up to 256 SCSI devices.
When configuring libraries and drives, you need to specify their control device file names: each device file
name corresponds to one attached SCSI device. Control device file names are located in the /dev
directory. Therefore, the specified control device for library and drive takes the form /dev/sgX, where X is
a number between 0 and 255.
Windows specific
Before configuring FSE drives, ensure that the drivers of all tape drives to be used as FSE drives are
disabled on a consolidated FSE implementation or FSE server host. For more information on disabling the
tape drive drivers, see the FSE Installation Guide.
On Windows platform, FSE identifies attached SCSI devices (libraries and drives) by specifying port, bus,
target, and LUN in the form of id:P:B:T:L, where:
Library and drive configuration procedure
NOTE: To use disk media, no library and drive configuration is needed.
1. Before you start configuring FSE libraries and drives, you must determine their control device files. Use
the fse_scsi tool to get the desired output:
P ..... SCSI port number (HBA number) to which the device is connected.
B ..... SCSI bus/channel number on the HBA to which the device is connected.
T ..... target ID to which the device is connected.
L ..... logical unit number (LUN) of the device.