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Exhibit 10.0-2 Example 2: Multiple Fibre Channel initiators share a Fibre Channel connection on the FC-AL with a
FibreBridge and there are no other initiators on the SCSI bus.
Multiple Fibre Channel Initiators
1. Fibre Channel Initiator 1 sends the
Reserve command through the FC-AL to the
FibreBridge.
2. The FibreBridge determines that no
reservation conflict exists at Tier 1.
3. The FibreBridge sends the Reserve
command to the SCSI target.
4. The SCSI target is reserved.
5. Fibre Channel Initiator 2 sends the
Reserve command through the FC-AL to the
FibreBridge.
6. The FibreBridge determines the SCSI
device is already reserved.
7. The FibreBridge rejects FCInitiator 2's
command and returns reservation conflict.
8. The SCSI target is reserved until a
Release command is sent by FC Initiator 1.
Exhibit 10.0-3 Example 3: Several Fibre Channel initiators share a Fibre Channel connection on the FC-AL with a
FibreBridge, and several initiators share the SCSI bus. In this topology, FibreBridge caching must be completely
disabled or the FibreBridge may return stale data.
Class 3: Multiple FC & SCSI Initiators
1. Fibre Channel Initiator 1 sends the command
Reserve through the FC-AL to FibreBridge 1.
2. FibreBridge 1 determines the command is valid.
3. FibreBridge 1 sends the command Reserve to the
SCSI target.
4. The SCSI target is reserved.
5. Fibre Channel Initiator 3 sends the command
Reserve through the FC-AL to FibreBridge 2.
6. FibreBridge 2 determines the command is valid.
7. FibreBridge 2 sends the command Reserve to the
SCSI target.
8. The SCSI target is already reserved and rejects
FibreBridge 2's command.
9. FibreBridge 2 returns reservation conflict to Fibre
Channel Initiator 3.
10. The SCSI target is reserved until a Release
command is sent by Fibre Channel Initiator 1. No
Reserve commands by any other initiator will be
accepted.
Fibre Channel
Arbitrated Loop or
Fabric
FC Initiator 1
ATTO FibreBridge 1
SCSI
SCSI target
FC Initiator 1
FC Initiator2
Fibre Channel
Arbitrated Loop
ATTO FibreBridge 1
SCSI bus
FC Initiator 2
FC Initiator 3
FC Initiator 4
Fibre Channel
Arbitrated Loop
ATTO FibreBridge 2
SCSI bus
SCSI target
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