Clustering support
Clustering is a means of sharing array groups among controllers to provide
redundancy of controllers and servers. This redundancy is important if a hardware
component fails. If a hardware component failure occurs in a cluster, another server
takes ownership of the array group.
Clustering requires software specific to your operating system. For more information
about clustering, go to the following Web site:
www.pc.ibm.com/us/compat/nos/matrix.shtml
Inventory checklist
After you unpack the DS4100 storage server, verify that you have the following
items:

v Hardware

– Up to 14 hard disk drives (shipped installed in the DS4100)

Note: The DS4100 base storage server is shipped with no SATA hard disk
drives as standard. You can order the unit with up to 14 250 GB S ATA
drive CRUs installed at the factory. The DS4100 single-controller
storage server is shipped with three 250 GB SATA drive CRUs as
standard. You can order the unit with up to 11 additional SATA drive
CRUs installed at the factory.

– RAID controllers (shipped installed in the DS4100)

- 2 controllers on the base storage server

- 1 controller on the single-controller storage server

Note: A blank controller tray is installed in the empty controller slot in the
DS4100 single-controller storage server chassis. For proper cooling

and EMI shielding, do not remove this blank controller tray.

– Two fan units (shipped installed in the DS4100)

– Power supplies (shipped installed in the DS4100)

- 2 power supplies on the base storage server

- 1 power supply on the single-controller storage server

Note: A blank power supply tray is installed in the empty power supply slot
in the DS4100 single-controller storage server chassis. For proper
cooling and EMI shielding, do not remove this blank power supply

tray.

– Line cord jumpers

- 2 line cord jumpers on the base storage server

- 1 line cord jumper on the single-controller storage server

Line cord jumpers are power cords used to connect the DS4100 power supply
units to the IBM-certified rack power distribution units (PDUs).

– One rack-mounting hardware kit, including:

- Two rails (right and left assembly)

- Eight M6 black hex-head slotted screws

- Eight M6 cage nuts

- Eight M6 clip nuts

– Up to 14 blank drive trays (shipped installed in the DS4100)

Chapter 1. Introduction 5