LSI Symbios SYM53C040, Technical Manual

Page: 13 / 214

Symbios SYM53C040 Enclosure Services Processor Technical Manual 1-1
Chapter 1
Introduction
This chapter provides general overview information on the SYM53040
Enclosure Services Processor. The chapter contains the following
sections:
•
Section 1.1, “SYM53C040 Overview”
•
Section 1.2, “SCSI Mode”
•
Section 1.3, “SFF-8067 Mode”
•
Section 1.4, “Features Summary”
1.1 SYM53C040 Overview
The SYM53C040 is an integrated Enclosure Services Processor (ESP)
device that provides enclosure monitoring services for SCSI and Fibre
Channel enclosures. It supports the SCSI Accessed Fault-Tolerant
Enclosures (SAF-TE) and SCSI-3 Enclosure Services (SES) enclosure
specifications.
The enclosure monitoring services in the SYM53C040 allow a single chip
solution for monitoring disk drives, power supplies, cooling systems, and
other system services. Support for standard protocols such as SAF-TE
and SES provide a nonproprietary way for third party disk and RAID
controllers to be automatically integrated with peripheral enclosures that
support status signals, hot swapping of hard drives, and monitoring of
enclosure components. This decreases component cost and increases
system reliability in distributed storage environments where status
information on system resources, such as disk drives, must be available
to multiple controllers. SCSI/SAF-TE Enclosure Implementation.