Exabyte 221L, Product Manual

Page: 170 / 208

154
P
RODUCT
M
ANUAL
1014258
C
HAPTER
8—T
ROUBLESHOOTING AND
E
RROR
C
ODES
✔
LVD SCSI devices (221L). Because the library is an LVD device, all other
devices on the SCSI bus should also be LVD. These devices include the
controller cards, cables, terminators, and any other devices on the SCSI bus.
Do not mix LVD and HVD devices on the same bus.
Note: Although LVD SCSI is compatible with single-ended SCSI, Exabyte
does not support single-ended devices on the library’s LVD SCSI bus.
✔
Wide SCSI devices (221L). Because the library is a wide SCSI device, all other
devices on the bus must be wide.
✔
Number of tape drives on a SCSI bus (221L). For best performance, avoid
connecting more than two LTO tape drives on the same SCSI bus.
✔
SCSI cable lengths (221L) . Make sure the SCSI cabling for any of the buses
attached to the library does not exceed maximum lengths (see page 18 ).
✔
Termination (221L). Make sure the SCSI buses are properly terminated as
described on page 18 . If another SCSI device previously terminated the SCSI
bus and is no longer at the physical end of the bus, be sure to remove the
terminator from that device.
✔
Compatibility. Make sure that your tape drive(s) and library are compatible
with the adapter card and application software you plan to use. Visit
Exabyte’s web site at www.exabyte.com for compatibility information.
✔
Adapter card installation. Make sure that you installed your adapter card
correctly. Refer to the documentation that came with your card for
installation and troubleshooting instructions. Pay special attention to steps
describing setting various jumpers and switches on the card. Make sure that
the card is properly seated.
✔
Fibre Channel connections (221L-FC). Make sure that the GBICs and cables
used to connect the library and tape drive(s) to the Fibre Channel loop are
compatible. Make sure that the Fibre Channel cables are firmly connected to
the library, tape drive(s), and Fibre Channel hub or switch.
✔
Software installation. Make sure that your application software is installed
correctly. (Refer to the software documentation.) Pay special attention to
steps that describe how to configure the software for use with the library and
tape drive(s).
✔
Control mode. Make certain the control mode is set to SCSI or one of the
sequential modes. See page 54 for more information.
After checking the items above, reset the library as described on page 66 .