HP XP Data Shredder Software - Manual (Page 82)

9. Click OK to close the Format All dialog box. A message appears asking if you want to apply
the settings.
10. Click OK to start formatting.
Quick Formatting the LDEVs
The Quick Format feature allows you to execute the quick formatting operation on internal volumes.
To execute quick formatting on an internal volume, you must make sure the internal volume is in
blocked status according to the instructions in
“Blocking Internal Volumes” (page 85) . Table 20 (page
82) indicates specifications for the Quick Format feature.
Table 20 Quick Format Specifications
Description Items
To execute the quick formatting, you must create the system disk (see “Creating System
Disks” (page 84) ).
Preparation for executing the
Quick Format feature
Volumes of all emulation types can undergo Quick Format. The emulation types of
volumes that can undergo
Quick Format
Up to 30 parity groups can concurrently undergo Quick Format. There is no limit on the
number of volumes that can undergo Quick Format. For details about how to display the
number of parity groups that are undergoing Quick Format, see
“Quick Format Execution
Display” (page 30) .
The number of parity groups
that can undergo Quick
Format
While one Quick Format operation is in progress, another Quick Format operation can
be performed. A maximum of 30 parity groups can concurrently undergo Quick Format. Concurrent Quick Format
operations
At the beginning of the Quick Format operation, VLL performs preliminary processing to
generate management information. If a volume is undergoing preliminary processing,
the Customized Volume window shows the status of the volume as Preparing Quick
Format. While preliminary processing is in progress, hosts cannot perform I/O access
to the volume, as is the case with normal formatting. Preliminary processing on mainframe
volumes may take a long time. For details about the time required for preliminary
processing, see . Preliminary processing
If a volume undergoing Quick Format is blocked, the storage system has recognized that
the volume is undergoing Quick Format. After the volume is restored, the status of the
volume changes to Normal (Quick Format).
The Customized Volume window shows the number of parity groups undergoing Quick
Format. If all volumes in one or more parity groups undergoing Quick Format are blocked,
the displayed number of parity groups undergoing Quick Format decreases by the number
of blocked parity groups. However, the number of parity groups that have not undergone
and can undergo Quick Format does not increase.
To calculate the number of parity groups that have not undergone, but can undergo
Quick Format, use the following formula:
30 - X - Y
Where:
X indicates the number of parity groups on which Quick Format is being performed. For
detailed information about the number of parity groups see .
Y indicates the number of parity groups in which all volumes are blocked during the
Quick Format.
Blocking and restoring of
volumes
82 Performing Virtual LVI/LUN and Volume Shredder Operations