Quantum TC2201E Guide de l'utilisateur Page 24

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Chapter 1 Introduction
Processing SCSI Information
4 Quantum TC2201E User’s Guide
Figure 4 shows a host accessing SCSI tape drives and libraries via the
TC2201E.
Figure 4 Example
Configuration
Processing SCSI Information 1
The following section describes how the TC2201E processes SCSI
information when attached to iSCSI hosts.
Figure 5 illustrates steps 1
through 5 of the process.
1 A iSCSI host issues a command. The iSCSI host encapsulates the
command in the iSCSI protocol and sends the packet to the TC2201E.
2 The iSCSI controller in the TC2201E receives the packet, interprets the
iSCSI information, and places the packet in buffer memory.
3 The TC2201E’s processor interprets the information and programs a
SCSI controller to process the transaction.
4 The SCSI controller sends the command to the SCSI device (target).
5 The SCSI target interprets the command and executes it.
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