Configuring The Drive Loops With Storage Expansion Enclosures; Using Exp100, Exp700, Or Exp710 Storage Expansion Enclosures; Connecting Exp100, Exp700, Or Exp710 In A Redundant Pair Of Drive Loop - IBM TotalStorage DS4300 Installation, User's, And Maintenance Manual

|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|

Configuring the drive loops with storage expansion enclosures

|
|
|

Using EXP100, EXP700, or EXP710 storage expansion enclosures

|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
them on. Read the rules the storage expansion enclosure cabling limitations in
"General rules and recommendations for cabling storage expansion enclosures"
on page 51.
3. Depending on the type of storage expansion enclosure (14-drive or 16-drive)
that you plan to connect to the DS4300 drive mini hub ports, see"Using
EXP100, EXP700, or EXP710 storage expansion enclosures" or "Using EXP810
storage expansion enclosures" on page 66 for instructions on how to connect
the DS4300 to the enclosures.
Note: Not all of the EXP100, EXP700, EXP710 or EXP810 enclosures can be
cabled together. For information on supported combinations, see
"Supported storage expansion enclosure configurations and intermix
combinations" on page 47.
4. In non-EXP810 storage expansion enclosures, such as EXP710 or EXP100, set
unique enclosure IDs (with the single digits unique among enclosures in a
redundant drive loop pair) for all storage expansion enclosures that are cabled
to the DS4300. See "Setting server/tray ID settings" on page 29, and then refer
to your storage expansion enclosure installation manual for details on setting
the enclosure ID.
5. For EXP810, ensure that the enclosure speed switch on the lower left corner on
the front of the EXP810s set to 2 Gbps.
The DS4300 Storage Subsystem locates the drives in the storage expansion
enclosures after you power on the configuration. Always connect power to the
storage expansion enclosures first and then connect power to the DS4300. After
you have powered on the configuration, use the DS4000 Storage Manager client to
check the status of the new drives, correct any errors found, and configure the new
drives.
This section provides information on how to connect supported storage expansion
enclosures in a redundant drive loop.
This section provides instructions on how to connect one group of four EXP100,
EXP700, or EXP710 storage expansion enclosures in a redundant drive loop pair.
In addition, this procedure is also applicable when you have any number of
enclosures, up to the maximum number that can be attached in the DS4300
redundant drive loop pair.
To complete this procedure, you will need two fiber-optic cables per storage
expansion enclosure.
Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. Do not overtighten the cable
straps or bend the cables to a diameter of less than 76 mm (3 in.) or a radius less
than 38 mm (1.5 in.)
Connecting EXP100, EXP700, or EXP710 in a redundant pair of
drive loop
This procedure describes the cabling for intermixing 14-drive storage expansion
enclosures together in a redundant pair of drive loops.
Chapter 3. Cabling the storage subsystem
61