Hp XP Data Shredder Software Manual de usuario descargar pdf (Pagina 83)

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101

Table 20 Quick Format Specifications (continued)

DescriptionItems

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.

• 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 StorageWorks XP24000/XP20000 Auto LUN Software User Guide.

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

undergoing Quick Format.

Restrictions

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

83) 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

17.5750

23.51000

• Table 22 (page 83) indicates the required time when you execute quick formatting on all the

areas in a parity group. When you execute quick formatting on some volumes in a parity

group, the required time may be less than the time indicated in Table 22 (page 83).

• If an I/O operation is performed from a host, the required time might be five times as long

as or longer than the required time shown in Table 22 (page 83).

• When you execute quick formatting on multiple parity groups, the required time may be longer

than the required time shown in Table 22 (page 83). Formatting 15 parity groups requires

twice as much time, and formatting 30 parity groups requires three times as much time as

shown in Table 22 (page 83).

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