HP XP P9500 Storage - Manual (Page 55)

Quick Format specifications
Description Item
The internal volume must be in blocked status. However, you do not need to create a
system disk. Preparation for executing the
Quick Format feature
Up to 36 parity groups can concurrently undergo Quick Format. There is no limit on
the number of volumes that can undergo Quick Format. 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 36 parity groups can concurrently undergo Quick Format. Concurrent Quick Format
operations
At the beginning of the Quick Format operation, Remote Web Console performs
preliminary processing to generate management information. If a volume is undergoing Preliminary processing
preliminary processing, the Remote Web Console main 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.
If a volume undergoing Quick Format is blocked, the storage system recognizes that
the volume is undergoing Quick Format. After the volume is restored, the status of the
volume changes to Normal (Quick Format). Blocking and restoring of
volumes
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:
36 - X - Y
Where:
X indicates the number of parity groups on which Quick Format is being performed.
Y indicates the number of parity groups where all volumes are blocked during the Quick
Format.
The Quick Format operation resumes when power is turned back on. Storage system is powered off
and back on
Restrictions •
Quick Format cannot be executed on external volumes, virtual volumes, system disks,
the journal volumes of Continuous Access Journal and quorum disks.
•
The volume migration feature or the QuickRestore feature cannot be applied to
volumes undergoing Quick Format. When you use RAID Manager to execute the
volume migration operation or the QuickRestore operation on volumes undergoing
Quick Format, EX_CMDRJE will be reported to RAID Manager. In this case, check
the volume status with Remote Web Console.
•
The prestaging feature of Cache Residency cannot be applied to volumes undergoing
Quick Format.
Formatting a specific LDEV
This procedure performs Normal formatting on the volume.
1.
Select and block the LDEV to be formatted.
See “Blocking an LDEV” (page 52) for blocking an internal volume. See the HP P9000 External
Storage for Open and Mainframe Systems User Guide for blocking an external volume.
2. Click Format LDEVs.
3. In the Format LDEVs window, select the format type from the Format Type list, and then click
Finish.
4. In the Confirm window, click Apply.
If Go to tasks window for status is checked, the Tasks window opens.
Formatting LDEVs 55