Download Configuration and Administration Guide 4.3

(*1) The highest level mirror group
- Disks, lower level stripe groups, and lower level concatenation groups can be connected or disconnected. However, disconnection is
impossible if it can change the volume configuration or status.
- If no volume exits, the group itself can be removed.
- Volumes can be created or removed.
(*2) The highest level stripe group
- If no volume exists, disks and lower level concatenation groups can be connected or disconnected.
- If no volume exists, this type group can be connected to a mirror group.
- If no volume exists, the group itself can be removed.
- If more than one disks or lower level concatenation groups are connected to, volumes can be created or removed.
(*3) The lower level stripe group
- This type group can be disconnected from the highest level mirror group. However, disconnection is impossible if it can change the
volume configuration or status.
(*4) The highest level concatenation group
- If no switch group is connected to, disks can be connected.
- If no disk is connected to, lower level switch groups can be connected.
- If no volume area exists on the disk that was connected last, that disk can be disconnected.
- If no volume area exists in the group that was connected last, that lower switch group can be disconnected.
- If no volume exists and if no lower level switch group is connected to, this group can be connected to a mirror group or a stripe
group.
- If no volume exists, the group itself can be removed.
- Volumes can be created or removed.
(*5) Lower level concatenation group connected to the highest level mirror group
- Disks can be connected.
- If more than one disk is connected and no volume area exists on the disk that was connected last, that disk can be disconnected.
- This type group can be disconnected from the highest level mirror group. However, disconnection is impossible if it can change the
volume configuration or status.
(*6) Lower level concatenation group connected to the highest level stripe group
- If more than one disk is connected and no volume exists within the highest level group, the disk that was connected last can be
disconnected.
(*7) Lower level concatenation group connected to a lower level stripe group
- None.
(*8) The highest level switch group
- Disks can be connected.
- If no volume or inactive disk exists, the active disk can be disconnected.
- The inactive disk can be disconnected.
- If no volume exists, the group itself can be removed.
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