IBM TOTALSTORAGE DS4500 Manual de usuario

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IBM TotalStorage
DS4500 Storage
Subsystem Fibre
Channel Cabling
Guide 򔻐򗗠򙳰
Attention
This document contains important changes to the required cabling scheme for connecting storage
expansion enclosures to the IBM
®
TotalStorage
®
DS4500 Storage Subsystem.
The fibre channel cabling instructions in “Drive-side fibre-channel cabling” on page 4 of this
document replace the information provided in the IBM TotalStorage DS4500 Fibre Channel Cabling
Instructions (pn 25R0406) and the IBM TotalStorage DS4500 Installation and Support Guide (pn
25R0402).
Additionally, if you are connecting DS4000 EXP700 or EXP710 storage expansion enclosures to a
DS4500, follow the instructions provided in the this document and not the instructions on drive-side
fibre channel cabling presented in the IBM TotalStorage DS4000 EXP700 and EXP710 Installation,
User’s, and Maintenance Guide.
This document contains information on the following topics:
v “Using IBM SFP modules and IBM fibre channel cables”
v “Direct-attached host-side fibre channel cabling” on page 3
v “Drive-side fibre-channel cabling” on page 4
Using IBM SFP modules and IBM fibre channel cables
The Small Form-Factor Pluggable (SFP) module housing and fibre channel cable have integrated guide
keys that prevent you from inserting these devices incorrectly. You must insert SFP modules into ports
with minimal pressure so that you do not damage either the SFP module or the port. You can insert an
SFP module into an active port without affecting the operational loop performance. You must connect the
fibre channel cable to the SFP module after you insert the SFP module into the port.
Attention: Remove SFP modules from any unused mini hub ports (both host-side and drive-side) on the
DS4500 Storage Subsystem.
To avoid damage to your fibre-optic cables:
v Do not route the cable along a folding cable-management arm.
v For devices on slide rails, leave enough slack in the cable so that it does not bend to a radius less than
38 mm (1.5 in.) when extended or become pinched when retracted.
v Route the cable away from places where it can be damaged by other devices in the rack cabinet.
v Do not use plastic cable ties in place of the provided cable straps.
v 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.).
v Do not put excess weight on the cable at the connection point. Be sure that the cable is well supported.
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Indice de contenidos

Pagina 1 - Guide

IBM TotalStorage DS4500 Storage Subsystem Fibre Channel Cabling Guide 򔻐򗗠򙳰 Attention This document contains important changes to the requir

Pagina 2

Configuring the drive loops The procedure and illustrations in this section show how to connect one group of four storage expansion

Pagina 3

For the location of the ports on the storage expansion enclosure ESM board, see Figure 10. In InOut OutStorage expansion enclosureESM b

Pagina 4

If you want to connect more storage expansion enclosures into drive loops A and B, continue with Step 3; otherwise, go to “Connec

Pagina 5

Connecting a redundant drive loop to the DS4500 Use the following procedure to connect a redundant drive loop to the DS4500 Storag

Pagina 6

2. Connect drive loop B to the DS4500 Storage Subsystem, as shown in Figure 15. Starting with the first storage expansion enclos

Pagina 7

Leave the In port on the right ESM board on the first storage expansion enclosure in storage expansion enclosure group 2 and the

Pagina 8

Trademarks The following terms are trademarks of International Business Machines Corporation in the United States, other countries, or

Pagina 9

Installing an SFP module and fibre channel cable 1. Remove the protective caps from the SFP module and from the fibre channel c

Pagina 10

DANGERSome laser products contain an embedded Class 3A or Class 3B laser diode. Note the following. Laser radiation when open. Do

Pagina 11

OUTIN!2 Gb/s1 Gb/sOUTIN!2 Gb/s1 Gb/sOUTIN!2 Gb/s1 Gb/sOUTIN!2 Gb/s1 Gb/sOUTIN!2 Gb/s1 Gb/sOUTIN!2 Gb/s1 Gb/sOUTIN!2 Gb/s1 Gb/sOUTIN!2 Gb/s1 Gb/sHost 1

Pagina 12

Drive interface ports DS4500 Storage Subsystems use only redundant drive-loop configurations. Each drive mini hub connects to Controlle

Pagina 13

Overview: Cabling a DS4500 with four drive mini hubs Review the following information carefully and then continue to “Configuring th

Pagina 14

Drive Loop ADrive Loop BDrive Loop DDrive Loop CInputInputOutput OutputFirst DS4000 driveenclosureLast DS4000 driveenclosureNew DS4000 driveenclosureD

Pagina 15

Attention: Previous DS4500 cabling documentation identified incorrectly the connections of drive loops B and C in DS4500 configuratio

Pagina 16

swapping these mini-hubs, you will not need to schedule down time later for re-cabling the drive loop if additional mini hubs are

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