Machine Administration Guide 2.6

B.2.1 Unmounting disks

The following two steps of the unmount operation must be performed to enable disk replacement:

1. Logical unmounting for preventing the volume management software and OS from using the relevant disk
2. Electrical disconnection for stopping disk rotation and enabling physical removal

In addition to the above, Machine Administration must be notified that the relevant disks can be replaced physically.
Machine Administration manages a list of disks reported to it as being swappable, to prevent the erroneous replacement of disks not included in the list.

The unmount operation varies depending on whether SynfinityDisk or PRIMECLUSTER GDS (GDS), or other volume management software (Solstice^TM DiskSuite, VERITAS^TM Volume Manager, etc.) is used.