Installing A Terminator - Sun Microsystems StorEdge MultiPack Series User Manual

If your computer has a narrow (50 pin) SCSI connector, you must set the SCSI ID
switch on the back of the Sun StorEdge MultiPack unit to IDs 1–6. If the unit is
loaded with six drives, you cannot chain any other devices on that bus.
If a narrow SCSI tape drive, such as a Desktop Storage Module, is chained on the
same narrow SCSI bus with a Sun StorEdge MultiPack enclosure, the narrow device
should be first.
Sun StorEdge MultiPack, SPARCstorage MultiPack, and SPARCstorage UniPack Configuration Guidelines
External Subsystem
UltraSCSI Host or
Daisy Chain
Host Bus Adapter
Configurations
UltraSCSI 1 MultiPack only*
MultiPack
2-6 drives
MultiPack
2-12 drives
MultiPack
2-6 drives
2.1 Gbyte 7200 rpm
UniPack
4.2/1/05 Gbyte
UniPack
Tape/CD
UniPack
*This configuration alone permits UltraSCSI performance
** Maximum of seven devices are allowed on a SCSI bus (including the internal devices).
*** When mixing disk and tape devices on a SCSI chain, only two tape devices are allowed.

Installing a Terminator

Each Sun StorEdge MultiPack drive enclosure comes with an external single-ended
terminator. For UltraSCSI operation, do not use the external terminator. The on-
board autoterminator functions in UltraSCSI mode.
For Fast operation, install the terminator on the SCSI OUT port of a Sun StorEdge
MultiPack unit after you have connected it to the host.
24 Sun StorEdge MultiPack User's Guide • February 1998
Fast/Wide Host
UltraSPARC™
Bus Adapter
Fast/Wide
(SWIS/S,
Onboard Hosts
SunSwift™)
1 MultiPack 2 MultiPack
+ 1 UniPack + 1 UniPack
1 MultiPack-12 1 MultiPack-12
only only
1 MultiPack-6 2 MultiPack-6
+ 1 UniPack + 1 UniPack
3
4
4*** 4***
Fast/Narrow
Onboard Hosts
1 MultiPack
+ 1 UniPack**
None
1 MultiPack-6
+ 1 UniPack**
4 4
5 4
4***
Fast/Narrow
Host Bus
Adapter
1 MultiPack
+ 1 UniPack**
None
1 MultiPack-6
+ 1 UniPack**
4
5
4***