Hp XP External Storage Software Manual de usuario descargar pdf (Pagina 27)

Figure 9 When the Path Mode is Single Mode

• When t

he path mode is Single mode and there is at least one alternate path in the Standby status

Figur

e10 on page 28 shows an example of the case when the path mode is Single mode, and

there are the alternate paths in the Normal status and the Standby status. Figure 11 on page 29

shows another example of the case when the path mode is Single mode. In the case of

Figure 11 on page 29, there are alternate paths in the Standby status only.

When an error occurs in the path that is being used for I/Os, the I/O execution path is switched

to the path with the second highest priority in the Normal status (see Figure 10 on page 28). If

there is no path in the Normal status other than the path that is being used for I/Os, the status of

the path in the Standby status is automatically changed to Normal, and the I/O execution path is

swi

tched to that path (see Figure 11 on page 29).

Note:

Only when the external storage system is EVA storage system, as you restore the path with

the highest priority, the I/O execution path is switched back to the restored highest priority path.

In this case, the status of the path for which the status has been changed to Normal when the

error has occurred is changed back to Standby.

XP24000 External Storage Software User’s Guide

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Hp XP External Storage Software Manual de usuario Pagina 27