IBM DS3950, Руководство пользователя и инструкция по установке

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3. Replace the protective caps on the cable ends.
4.
Replace the protective cap on the SFP module.
Cabling rules and recommendations
Refer to these general rules and recommendations when completing the cabling
steps in “Cabling the EXP395 to a storage subsystem” on page 41.
v
Do not connect a combination of more than seven EXP395 storage expansion
enclosures to the two ports of a dual-ported drive channel. Failure to observe
this limitation might result in loss of data availability.
v
Do not connect more than four EXP395 storage expansion enclosures to each port
of a dual-ported drive channel.
v
It is recommended that you add storage expansion enclosures to the EXP395
drive ports in a round-robin fashion. For example, if you have two EXP395s to
be cabled to the DS3950, instead of cabling both EXP395s to one drive port of a
drive channel, distribute the enclosures to all drive ports, which results in one
enclosure per drive port of a drive channel. See Figure 25 on page 41 for an
illustration.
v
The controller drive ports of the DS3950 storage subsystem controllers must
always be connected to the ports labeled 1B in both right and left ESMs of the
EXP395s in the redundant drive channel/loop pair that is connected to the
DS3950 storage subsystem. (Figure 28 on page 44 shows the location of the
ports.)
v
Refer to the IBM System Storage Hard Drive and Storage Expansion Enclosure
Installation and Migration Guide and the IBM System Storage Subsystem Installation,
User's, and Maintenance Guide of your particular DS3950 storage subsystem for
any special cabling requirements.
Figure 24. Removing the LC-LC fibre-channel cable
40
IBM System Storage DS3950 EXP395 Storage Expansion Enclosure: Installation, User’s, and Maintenance Guide