
5.5 SCSI Cable Length
5.5 SCSI Cable Length
If the total length of internal and external cable used in a chain of storage
devices exceeds 236 inches (599 centimeters), the drives may not operate
correctly and transmitted data may be lost. To make sure that the drives in a
chain operate properly, put no more than three expansion boxes in one chain;
or make sure that the total length of SCSI cables in the chain does not exceed
the 236-inch limit. Table 5–1 lists the length of the SCSI cables linking the
drives inside each type of expansion box, as well as the lengths of SCSI cables
that you use to connect the external storage devices to the system unit and to
each other. The table is as accurate as possible, but actual lengths may vary
by an inch or two.
Table 5–1 SCSI Cable Lengths
Cable
Length
Internal cable for BA42 expansion box
31 inches
(79 centimeters)
Internal cable for TCE unit
52 inches
(132 centimeters)
Internal cable for self-contained storage devices (for
devices not listed here, refer to the documentation that
came with the device:
–For TK50Z tape drive
14 inches
(36 centimeters)
–For TLZ04 tape drive
37 inches
(94 centimeters)
–For RRD42 optical compact disc drive
6.5 inches
(17 centimeters)
System-unit-to-expansion-box cable (68-pin to 50-pin)
38 inches
(97 centimeters)
System-unit-to-TCE cable (68-pin to 68-pin)
26 inches
(66 centimeters)
SCSI box-to-box cable (50-pin to 50-pin)
26 inches
(66 centimeters)
Expansion-box-to-TCE cable (50-pin to 68-pin)
38 inches
(97 centimeters)
5–16 External Storage Devices
Содержание 5000/260
Страница 1: ...Order Number EK 4MMAX OP A01 DECstation 5000 Model 260 Operator s Guide...
Страница 14: ...Part I Introducing Your Workstation...
Страница 64: ...Part II External Additions to Your Workstation...
Страница 113: ...Part III Internal Parts and Additions to Your Workstation...
Страница 122: ...8 4 Using the Antistatic Wrist Strap Figure 8 3 Using an antistatic wrist strap MLO 010285 Inside the System Unit 8 9...
Страница 147: ...Part IV Managing Your Workstation...
Страница 192: ...Part V Appendixes...