Adaptec 5325302053 User Guide - Page 79
Mirror Managers and Mirror Plexes, Appliance A, File Server, Mirror Manager, Mirror Plex
UPC - 753253020539
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A dedicated link between the volume and its mirror is required, to support the continual synchronization. File Server Active access to volume Appliance A Net 1 Stand-by access to volume Net 1 Appliance B iSCSI iSCSI Net 2 (Mirror IO) Volume XYZ (original volume) Mirror Manager Synchronization Volume XYZ-1 (mirror of volume) Mirror Plex Mirror Managers and Mirror Plexes The original volume is called the mirror manager; its mirror is called the mirror plex. The mirror plex must have a name that's unique across both iSCSI Storage Appliances. Data is written to the mirror manager first; then, the mirror plex is synchronized with the mirror manager. If required, you can change the priority of the mirror plex so that it becomes the mirror manager, and vice versa. See "Changing Mirror Priorities" on page 75 for instructions. Once a mirrored volume is created, you can use Adaptec Storage Manager to manage it. This section describes how to: • Create a mirrored volume (see page 74). • Extend a mirrored volume (see page 75). • Change mirror priorities (see page 75). • Force a failover on a mirrored volume (see page 76). • Fail back a mirrored volume (see page 76). • Break a mirrored volume (see page 77). • Delete a mirrored volume (see page 78).