Hitachi AMS 2100, Руководство по оборудованию

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Introduction
Hitachi AMS 2100/2300 Storage System Hardware Guide
Array overview
The AMS 2100/2300 storage system consists of three main components:
• A base unit, which includes two redundant power supplies, two
redundant controllers, two cache backup batteries, and from four to 15
disk drives. The base unit provides data storage, as well as connection,
control, and management of the array system. There are two base unit
models:
• AMS 2100 (Hitachi factory designation RKS)
• AMS 2300 (Hitachi factory designation RKM)
• Optional expansion units. For the AMS 2100, one to seven expansion
units, and for the AMS 2300, one to 15 expansion units. An expansion
unit provides additional storage space and can connect the base unit to
additional expansion units or high-density expansion units. The same
expansion unit is used with both base unit models. The factory
designation for the standard expansion unit is RKAK.
An expansion unit contains two redundant power supplies, two ENC
interface units, and from two to 15 disk drives.
• Optional modular 2U SAS expansion units. For the AMS 2100 and
the AMS 2300, this unit can install a maximum of 24 disk drives. An
expansion unit provides additional storage space and can connect the
base unit to additional expansion units or high-density expansion units.
The same expansion unit is used with both base unit models. The
factory designation for the modular expansion unit is RKAKS.
An expansion unit contains two redundant power supplies, two ENC
interface units, and from two to 24 disk drives.
• Optional high-density expansion units. For the AMS 2100, one high-
density expansion unit, and for the AMS 2300, one to four high-density
expansion units. A high-density expansion unit provides additional
storage space and can connect the base unit to additional expansion
units or high-density expansion units. The same high-density
expansion unit is used with both base unit models. The factory
designation for the high-density expansion unit is RKAKX.
A high-density expansion unit contains two independent storage
sections. Each section contains two redundant power supplies, two
redundant ENC control units, and from four to 24 disk drives. The
maximum number of drives that can be installed in a high-density unit
is 48.
Table 2-1. Array components
Type
Factory name Component name
2100
RKS Base unit
RKES Rev2 base unit
2300
RKM Base unit
RKEM Rev2 base unit
Expansion Units
RKAK Standard
RKAKS Modular 2U SAS
RKAKX High density