Chapter 2 ses concepts, Introduction, Ses functional model – StorageTek StorageNet SCSI-3 User Manual

Page 17: Chapter 2 “ses concepts, Introduction -1, Ses functional model -1, Figure 2-1, Ses distribution -1, Chapter 2

8946121402

2-1

Chapter 2 SES Concepts

Introduction

This chapter uses generic terms to describe enclosure services and specific SES
implementation. SES instances can be distributed inside and outside of the Fabric to any
enclosure capable of supporting enclosure services through an SES device.

SES is distributed transparently throughout the Fabric, with an instance of a distributed SES
Device (SESD) on each switch as shown in

Figure 2-1

Figure 2-1 SES Distribution

SES Functional Model

Each instance may be accessed by an SES Application Client by specifying the associated
unique LUN. See

Figure 2-2

for information on LUN addressing. SES implementation also

provides an SES Application Client an in-band mechanism for managing any Fabric switch
that it is attached to.

Figure 2-2

shows the SES functional model.