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Shock and vibration requirements . . . . . . . . . . . . . . . . .17
Heat output, airflow, and cooling . . . . . . . . . . . . . . . . .18
Chapter 2. Installing the storage subsystem . . . . . . . . . . . . .21
Installation overview . . . . . . . . . . . . . . . . . . . . . . .21
Handling static-sensitive devices . . . . . . . . . . . . . . . . . .24
Preparing for installation . . . . . . . . . . . . . . . . . . . . .24
Tools and hardware required . . . . . . . . . . . . . . . . . . .25
Preparing the site . . . . . . . . . . . . . . . . . . . . . . .25
Preparing the rack cabinet . . . . . . . . . . . . . . . . . . . .26
Installing the support rails . . . . . . . . . . . . . . . . . . . . .27
Installing the DS4500 . . . . . . . . . . . . . . . . . . . . . .31
Removing the CRUs . . . . . . . . . . . . . . . . . . . . . .31
Removing the front bezel . . . . . . . . . . . . . . . . . . .32
Removing a storage subsystem fan . . . . . . . . . . . . . . .33
Removing a controller . . . . . . . . . . . . . . . . . . . .34
Removing a battery unit . . . . . . . . . . . . . . . . . . .35
Removing a power supply . . . . . . . . . . . . . . . . . . .35
Removing a fan and communications module . . . . . . . . . . .36
Removing a mini hub . . . . . . . . . . . . . . . . . . . .37
Installing the DS4500 into a rack on the support rails . . . . . . . . . .38
Replacing the components . . . . . . . . . . . . . . . . . . .40
Replacing a storage subsystem fan . . . . . . . . . . . . . . .40
Replacing a controller . . . . . . . . . . . . . . . . . . . .40
Replacing a battery unit . . . . . . . . . . . . . . . . . . .41
Replacing a power supply . . . . . . . . . . . . . . . . . . .42
Replacing a fan and communications module . . . . . . . . . . . .43
Replacing a mini hub . . . . . . . . . . . . . . . . . . . .44
Replacing the front bezel . . . . . . . . . . . . . . . . . . .44
Chapter 3. Cabling the storage subsystem . . . . . . . . . . . . . .47
Working with SFPs and fiber-optic cables . . . . . . . . . . . . . . .47
Types of interface ports . . . . . . . . . . . . . . . . . . . . .48
Host interface ports . . . . . . . . . . . . . . . . . . . . .49
Drive interface ports . . . . . . . . . . . . . . . . . . . . .49
Ethernet interface ports . . . . . . . . . . . . . . . . . . . .50
Handling fiber-optic cables . . . . . . . . . . . . . . . . . . .50
Installing SFP modules . . . . . . . . . . . . . . . . . . . . .51
Removing SFP modules . . . . . . . . . . . . . . . . . . . .53
Using LC-LC fibre-channel cables . . . . . . . . . . . . . . . . .54
Connecting an LC-LC cable to an SFP module . . . . . . . . . . .55
Removing an LC-LC fibre-channel cable . . . . . . . . . . . . .56
Using LC-SC fibre-channel cable adapters . . . . . . . . . . . . . .57
Connecting an LC-SC cable adapter to a device . . . . . . . . . .58
Removing an LC-LC cable from an LC-SC cable adapter . . . . . . .59
Connecting storage expansion enclosures to the DS4500 . . . . . . . . .61
Supported storage expansion enclosure configurations and intermix
combinations . . . . . . . . . . . . . . . . . . . . . . . .62
Overview: Connecting storage expansion enclosures to a storage subsystem 65
General rules and recommendations for cabling storage expansion
enclosures . . . . . . . . . . . . . . . . . . . . . . . .65
Storage expansion enclosure cabling diagrams . . . . . . . . . . .68
Steps for connecting storage expansion enclosures to a storage
subsystem . . . . . . . . . . . . . . . . . . . . . . . .75
Redundant drive loop cabling overview . . . . . . . . . . . . . . .76
Configuring the drive loops with storage expansion enclosures . . . . . .77
iv IBM TotalStorage DS4500 Fibre Channel Storage Subsystem: Installation, User’s, and Maintenance Guide