Power Supply-Fans; Raid Controller Specifications - IBM DS4800 User, Installation And Maintenance Manual

Table 5 lists the technical specifications for the RAID controllers.
Table 5. RAID controller specifications
Category
Memory
Interface
Storage Expansion Enclosure
Support
Data transfer rates

Power supply-fans

The DS4800 has two power supply-fans. Each power supply-fan contains a power
supply, a fan, and a battery charger. Each power supply provides power to the
controllers by converting incoming AC voltage to the appropriate DC voltages. If one
power supply-fan is turned off or malfunctions, the remaining power supply-fan can
maintain electrical power and cooling to the storage subsystem.
Note: Contact IBM for information about possible future DC-to-DC power supply
Criteria
Cache size
Fibre Channel Host port
Fibre Channel Drive
expansion port
Redundant drive channel
pairs
Maximum number of drives
per redundant drive channel
pair
Maximum number of drives
supported by one DS4800
Fibre Channel host
Fibre Channel drives
Ethernet
support.
Specification
2 GB, 4 GB or 8 GB,
depending on the model
4 fiber-optic ports per
controller
2 Ethernet ports per controller
(for out-of-band management)
4 fiber-optic ports per
controller
Note: Each DS4800
controller drive channel has
two ports. There are two drive
channels per DS4800
controller.
2 per controller
112 drives per redundant
drive channel pair (either 8
storage expansion enclosures
with 14 drives each or 7
storage expansion enclosures
with 16 drives each). See
Table 3 on page 9.
224 drives (2 redundant drive
channel pairs with 112 drives
in each drive channel pair)
Up to 4 Gb/sec maximum.
Support 1, 2 and 4 Gbps FC
speeds.
Up to 4 Gb/sec maximum
(depends on storage
expansion enclosure speed).
Support 2 and 4 Gbps drives
only. Does not support 1Gbps
drives.
10BASE-T
100BASE-T
Chapter 1. Introduction
15