DEC DS-HSZ22-AA, Руководство пользователя

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EK–SMCPO–UG. A01 1–1
1
Product Overview
This chapter provides an overall description of the RAID Array 3000 storage subsystem
and its components. A list of technical and environmental specifications is located at the
end of the chapter.
NOTE
This guide is the Hardware User’s Guide. For con-
figuration information, refer to the
Getting Started
RAID Array 3000 for Windows NT – Intel Installa-
tion Guide and the StorageWorks Command Con-
sole (SWCC) 2.0 User’s Guide.
1.1 Product Description
The RAID Array 3000 storage subsystem (Figure 1–1) is a desk-side subsystem
offering the basic components required to create a user-designed storage array
with two 16-bit, differential UltraSCSI bus host interfaces. The pedestal can ac-
commodate up to seven 3½-inch storage devices. The devices, referred to as
StorageWorks Building Blocks or SBBs, are disk drives from the StorageWorks
family of storage devices. The release note that accompanies the subsystem lists
the software solutions and disk drives that are supported. A battery backup sub-
system is included as part of the pedestal enclosure in the form of a free-standing
UPS (Uninterruptable Power Supply). In case of a power failure, the UPS pro-
vides a temporary backup for cache while the subsystem flushes to disks.
The RAID Array 3000 offering also includes option kits designed to increase the
storage capacity and enhance the performance of the subsystem. The first is an
expansion pedestal (second enclosure) designed to increase the storage capacity
of the subsystem to a maximum of 14 drives. The pedestal expansion kit option
is described in detailed in Chapter 4 of this guide.
The second option allows the addition of a second RAID controller to the subsys-
tem for redundancy. The second controller operates in conjunction with the in-
stalled controller to protect data during a malfunction. Chapter 5 describes how
to install the redundant controller option and how to reconfigure the subsystem to
accommodate it.