LTO Tape Drive User’s Guide
4 - Maintenance
10400934-001
©2020 Overland-Tandberg
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2.
Press the Eject button once per second until either
P
or
U
appears in the SCD indicating the
current setting for Post Error Reporting.
If you cycle past the desired code, press the Eject button once per second until the code
reappears.
NOTE:
I
f you do not want to change the current setting for Post Error Reporting, exit Maintenance
mode at this time.
3.
To enable Post Error Reporting (when
U
shows in the SCD), press and hold the Eject
button for three seconds.
The SCD changes to
P
after you release the Eject button.
You can then do one of the following:
•
Press the Eject button once per second to select another Maintenance mode function.
•
Exit Maintenance mode normally.
Send Diagnostics
POST can be initiated by means of a Send Diagnostics command. The drive will queue all
commands, except Inquiry, when running a Send Diagnostics initiated POST. The queued
commands will be executed when the POST phase has completed.
Other diagnostics are available through the Send Diagnostics command.
The results of the diagnostics are reported upon receipt of the Receive Diagnostics Results
command unless the self-test bit was set.
Isolation Diagnostics
If a drive encounters a permanent error, the drive may run isolation diagnostics to test the
drive hardware. These tests may include memory tests, module tests, data channel tests and
servo channel tests. These tests are invoked automatically; they cannot be invoked by the
customer.
Reliability, Availability, and Serviceability (RAS)
RAS Objectives
LTO tape drive RAS permits isolating tape drive problems from the cartridge/media, power,
cooling, RS-422, and Fibre or SAS attachment. Problem isolation minimizes the knowledge
required by the Customer Engineer (CE) or customer to service the drive.
Isolation comprises operational and maintenance microcode, hardware diagnostic tools such
as wrap plugs, service guide procedures, and a customer supplied scratch tape.
The drive provides indicators and user test capability to allow the CE to determine if the drive
requires service. The requirements of this section are verified using RAS testing.
