3 preparing for business copy operations, System requirements, Volume requirements – HP StorageWorks XP Remote Web Console Software User Manual

Page 39: 7 supported combinations of raid levels

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3 Preparing for Business Copy

Operations

This chapter describes the requirements and preparations you should know before attempting Business

Copy operations.

System Requirements

Business Copy operations involve the storage system containing the primary and secondary volumes

and the licensed Business Copy program product enabled on the Remote Web Console. The system

requirements for Business Copy are as follows.

Volume Requirements

The requirements for the volumes to be used as Business Copy pairs are as follows:

RAID level

The RAID level combinations of the P-VOL and the S-VOL of a Business Copy pair must be one

of the following.

Table 7 Supported Combinations of RAID Levels

P-VOL

S-VOL
RAID1

RAID5

RAID6

RAID1

OK

OK

OK

RAID5

OK

OK

OK

RAID6

OK

OK

OK

Types of volumes

Besides normal volumes, you can use external volumes, custom-sized volumes and LUSE volumes.

When using external volumes, customized volumes, or LUSE volumes, note the following points:
• External

volumes

The license of External Storage is required.

• Custom-sized volumes

The license for VLL is required. To create a Business Copy pair with custom-sized volumes,

P-VOL must be paired with S-VOLs of the same capacity and the same emulation type.

• LUSE

volumes

The license for LUSE is required. To create a Business Copy pair with LUSE volumes, you must

make sure that P-VOL must be paired with S-VOL of the same size and the same structure.

For example, if the P-VOL is a LUSE volume where volumes of 1 GB, 2 GB and 3 GB are

combined in this order, you must make sure that the S-VOL is a LUSE volume where volumes

of 1 GB, 2 GB and 3 GB are combined in the same order.

Emulation type

Only volumes of the following emulation types can be used: OPEN-3, OPEN-8, OPEN-9, OPEN-E,

OPEN-K, OPEN-L, or OPEN-V.

Logical DKC (LDKC), CU, LDEV number

You can use volumes whose LDKC:CU:LDEV (a combination of an LDKC number, a CU number,

and an LDEV number) is within the range of 00:00:00 to 00:FE:FF, or 01:00:00 to 01:FE:FF.

MU number

XP24000 Business Copy Software User's Guide

39

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