Table12-3 Maintenanceflow
Detailsof update process Replacement Expansion Reduction
1 Preparation 12.3 12.3 12.3
2 Removing an internal disk 12.4 -12.4
3 Installingan internaldisk 12.5 12.5 -
4 Restoringth e system 12.6 12.6 12.6
Note- See the proced ure for system-stopped maintenance for inactive/cold maintenance in a
single-chassisconfiguration.

12.2.3 Precautions for installation

Notethe following points when expanding internal disks:
■Toex pand an internal disk, remove the hard disk drive filler unit from the slot in
which you will install the internal disk.
■Storethe r emoved internal disk filler unit safely, such that it can be used again if
you subsequently reduce the internal disk.

12.2.4 Precautions for removal

Notethe following points when removing internal disks:
■When you reduce the internal disk, install the hard disk drive filler unit in the slot
from which you have removed the internal disk.
12.3 Enabling the Removal of an InternalDisk
Thissectio n describes the preparations that must be completed prior to removing an
internaldisk. The preparation procedure differs depending on the maintenance type
asfollows:
■Active/Hot maintenance
■Active/Coldmaintenance
■Inactive/Hot maintenance
■Inactive/Cold maintenance
■System-stopped maintenance
Chapter12 MaintainingtheInternal Disks 227