EMC QLogic Guide d'installation télécharger pdf (Page 141)

Understanding persistent binding

139

Troubleshooting

Figure 78 Original configuration before the reboot

Figure 79 shows the same host after the cable attached to HBA0 has

been removed and the host rebooted. Since Windows was unable to

do a discovery on HBA0, it assigned \\.\PHYSICALDRIVE0 to the

first device it discovered. In this case, that first device is connected to

HBA1. Due to the shift, any software application accessing

\\.\PHYSICALDRIVE0 will not find data previously written on the

original \\.\PHYSICALDRIVE0.

Figure 79 Host after the rebooted

The default driver behavior does not store target bindings between

host reboots. The bindings are dynamically generated by the HBA

when new target devices are detected.

Note: Tape devices are treated the same as disk devices in Windows with

respect to persistent binding. Refer to your tape device documentation for

more information.

HBA 0

HBA 1

HBA 2

PHYSICALDRIVE0

PHYSICALDRIVE4

PHYSICALDRIVE8

Windows

Host