Machine Administration Guide 2.6

B.3.2 Unmounting disks

To make a disk hot swappable for preventive maintenance purposes, you have to perform the following two steps of operation:

1. Logical unmounting for preventing the volume management software and OS from using the relevant disk
2. Electrical disconnection for stopping disk rotation to enable 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 for preventive hot swap varies depending on the type of software used: GDS4.1A30 or later, SynfinityDisk, GDS4.1A20 or earlier, or other volume management software (Solstice^TM DiskSuite, VERITAS^TM Volume Manager, etc.)