Hitachi AMS 2100, Hardware Manual

Page: 27 / 306

Introduction
1–7
Hitachi AMS 2100/2300 Storage System Hardware Guide
AMS 2300 base unit
The Hitachi AMS 2300 Adaptable Modular Storage disk array (model RKM)
(hereafter referred to as AMS 2300) includes a base unit and from 0 to 15
expansion units.
• The AMS 2300 base unit contains from 4 to 15 SAS and/or SATA disk
drives, two redundant controllers, two redundant power supplies, and
two cache battery backup units.
• The AMS 2300 is externally identical to the AMS 2100 except that it has
four Fibre Channel ports on each of the two controllers instead of two,
or two iSCSI ports, as shown in the figure below. Internally, it has a
faster CPU, more RAM, and can have more expansion units and spare
drives, See Appendix A and the Hitachi AMS 2000 Family Storage
System Reference Guide for full specifications. See Disk drive
configurations in Chapter 4 for detailed information about the number
and type of disk drives that can be installed in an AMS 2300.
Figure 1-4 shows the front (above) and rear (below) views of the AMS 2300
base unit. The front bezel has been removed in this photo. Expanded views
with descriptions of the components are shown in Chapter 4, Hardware
components .
Figure 1-4: AMS 2300 Base Unit Front and Rear Views