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ServerNet Nomadic Disk Overview

ServerNet Nomadic Disk (Release 2) User’s Guide—523968-001

1-4

Data Paths and Disk Drive Ownership After a

Switchover

•

Thinner lines indicate inactive data paths that run between the backup node \BCK

and the primary and mirror disk drives.

Data Paths and Disk Drive Ownership After a Switchover

To manage outages, both the primary disk drives and remotely located mirror disk

drives can be switched to the backup node. When a outage brings down the primary

node, the ownership of the disk drives can be switched to \BCK. After a switchover, the

active data paths are as shown in Figure 1-2.

•

The thick solid lines designate active data paths, which are between the backup

node and the primary and mirror disk drives. The primary disk drives, which are

located with the primary node \PRI, are now owned by the backup node \BCK. The

mirror disk drives are also now owned by the backup node.

•

The thinner lines indicate inactive data paths, which run between the primary node

and the primary and mirror disk drives.

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Hp NonStop G-Series Manual de usuario Pagina 22