User`s guide

1
Introduction to HS Array Controllers
This chapter contains an overview of the HS family of array controllers. A list of
key attributes for each controller and the controller shelves are provided. This
chapter also provides a brief description of the protocols used with each controller
model’s functional environment.
1.1 Overview of HS Array Controllers
The HS array controllers are a family of controller products designed to provide
open interface interconnection for the following:
• Digital Equipment Corporation small computer system interface (SCSI)
devices:
Solid state disks
Disk drives
Tape drives
Tape loaders
CD–ROM drives
• Redundant array of independent disks (RAID)
Note
The HS array controllers support a variety of storage devices. Refer
to product-specific release notes and software product descriptions for
supported devices for each controller model (HSJ30/40, HSD30, HSZ40–
Ax, or HSZ40–Bx array controllers). Any limitations or restrictions not
already provided in this manual are provided in the product-specific
release notes for your HSOF version number.
The HS family of array controllers is an integral part of the StorageWorks array
subsystem. HS array controllers provide high performance, high availability, and
high connectivity access to SCSI–2 devices from the host by way of a variety of
interconnects. The interconnects discussed in this manual are CI, DSSI, and
SCSI for the HSJ30/HSJ40, HSD30, and HSZ array controllers respectively.
These controllers support various operating systems as described in controller-
specific release notes, software product descriptions (SPDs), and in Chapter 8 of
this manual.
Introduction to HS Array Controllers 1–1