5.7.6
Checking the RLS Configuration
At this point, the tape drives, magazines and cartridges have been installed, and the
cables have been connected. Also, the RLS power has been turned on where needed
and the Medium-changer has proven to be basically functional (successful completion
of the power-up sequence). The Medium-changer is now configured to the default
values for use with the drives and with the host computers.
5.7.7
Testing Basic SCSI Operation
The MC, can now be tested to verify that it responds correctly to commands from the
host. The simplest way of doing this is to issue a Test Unit Ready command to the
MC. If the changer returns a GOOD status, then it is certain that the SCSI
communications protocol and the cables are operational. Once the Media-changer
returns a GOOD status, the system is ready for a more thorough checkout.
For the factory-default settings the host must be attached to the top most drive.
SAS and fibre channel are both point-to-point connection schemes that use the WWN
to identify each device. To identifying which drive is in which library position in
Windows systems, please use the following commands, which are part of the
QuickConf package, available from Qualstar Technical Support.
1.
scanscsi *,*,*
(to determine [id],[lun],[host])
2.
readelem [id],[lun],[host] e:4 voltag
(to Library result of scanscsi)
3.
inquiry [id],[lun],[host] v:128
(each Drive result of scanscsi)
4.
match s/n in
readelem
to s/n from
inquiry
to each drive.
The factory-default settings are sufficient for 90% of the SCSI applications in the field.
This means that in nine out of ten installations, the system will transfer data and
function normally. Some systems, however, may not function optimally using the
factory-default settings. For example, the application may require a particular SCSI
Inquiry string, which differs from the default inquiry string. Refer to Chapter 9 for
additional information on configuring the RLS. The default inquiry strings are:
•
“RLS-8350”
•
“RLS-8560”
•
“RLS-85120”
511000 Rev. F
Installation 5-39
