HP Integrity NonStop H-Series - Manual (Page 57)

Section 4: SCSI Bridge Electronics
drive testing. Other features of the SCSI bridge electronics include software configuration retained in
nonvolatile memory, flash memory for firmware upgrade, and low semiconductor parts count for reliability.
2.2 Initial LCD
After applying power to the tape drive, the SCSI bridge electronics attempt to access the drive at the selected
tape ID. Typically, tape drives require a few seconds to perform their self-test before they respond. The tape
drive is not selectable to the NonStop server during this period. If the tape ID has not been correctly selected
the tape drive will not complete its power-up sequence and remains inaccessible to the NonStop server. The
tape ID is set at the factory and is NOT user-selectable. If the tape drive fails to complete its power-up
sequence, contact the HP GCSC.
InFourmm
========
Power-on
SelfTest
Initial Power-Up Screen
Figure 40
LCD at startup
When the drive is accessed, the LCD presents the tape drive model identification and firmware level on the
top two lines, and the SCSI bridge electronics' product name, firmware level and host SCSI ID on the
bottom two lines. The tape drive is now selectable by the NonStop server at the host SCSI ID.
Figure 41 Identification of LCD items
This screen appears similar for the 5242 and 5242ACL models. The differences are:
Identification 5242 Display 5242ACL Display
Drive Product Identification Q1525A Q1566
Infourmm Firmware Level D72A D72B
Drive Firmware level V312 B312
2.3 Performance LCD Format
Upon receiving a TEST UNIT READY or INQUIRY SCSI command from the host, the LCD switches to
the performance format. This is the main operational format of the LCD. The top two lines of the LCD
always display the current SCSI command and the tape-capacity bar graph. The bottom two lines of the
display alternate between five performance/status items.
HP StorageWorks DAT 72 (Models 5242 and 5242-ACL) User's Guide 50 HP Part Number 528296-03 July 2005