LUN (VLL) and Volume Shredder User Guide (T5214-96094, November 2011)

ManualsBrandsHP ManualsSoftwareHP Remote Web Console XP

Table 20 Quick Format Specifications (continued)

DescriptionItems

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.

The Quick Format operation resumes if you turn the power back on.Storage system is powered

off and then you turn the

power back on.

Restrictions

• Quick Format cannot be executed on external volumes, virtual volumes, system disks,

journal volumes of XP Continuous Access Journal, and quorum disks.

• The XP Auto LUN 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. For more information about XP Auto LUN, see the

HP XP24000/XP20000 Auto LUN Software User Guide.

• The prestaging feature of Cache Residency Manager cannot be applied to volumes

undergoing Quick Format.

Table 21 Estimated Required Time for Preliminary Processing on Quick Format of Mainframe System

Volumes (per 1,024 volumes)

Required Time (minutes)Emulation Types

183390-M, 3390-MA, 3390-MB, 3390-MC

93390-L, 3390-LA, 3390-LB, 3390-LC

43390-9, 3390-9A, 3390-9B, 3390-9C

2The emulation types other than those above

The Quick Format feature allows you to format a volume in the background while I/O operations

are being performed from a host. The required time for quick formatting might drastically differ

depending on the number of I/O operations from a host, and other conditions. Table 22 (page

74) indicates the estimated required time for quick formatting when no I/O operation is performed

from a host.

Table 22 Estimated Required Time for Quick Formatting

Required Time (hours)Capacity of a Drive (GB)

172

2146

4300

6450

74 Performing Virtual LVI/LUN and Volume Shredder Operations