Hp XP20000XP24000 Disk Array Uživatelský manuál stáhnout pdf (Strana 13)

Table 2 XP Thin Provisioning Advantages

Advantages With XP Thin Provisioning Without XP Thin Provisioning

Reduced insta

llation

cost

You can deﬁne volumes that are larger

than the actual disk capacity, which

reduces the initial installation cost.

This mayvarydepending on the OS

or ﬁle system.

For more information,

see Operatin

gSystem and File System

Capacity on p

age 31.

You must predict future usage and

purchase capacity that will not be used

until later.

Reduced operation

cost

If you need additional disk capacity, you

can install it without taking the system

ofﬂine.

You must take the storage system ofﬂine

to add disk capacity.

Reduced

management

overhead

You can deﬁne volumes without regard

to actual disk capacity, up to 2 TB.

To create large LUs, you must use LUSE.

Note that LUSE volumes cannot always

be combined into an HP StorageWorks

XP Business Copy Software pair.

For more information on LUSE, see

HP StorageWorks XP24000 LUN

Expansion User's Guide.For more

information about Business Copy, see

HP StorageWorks XP24000 Business

Copy Software User's Guide.

Incre

ased hard disk

drive

availability

You can conﬁgure volumes from multiple

parity groups, which increases parity

group

performance.

Because you must purchase disk

capacity for future use, there will be

some disks that are not being used.

This f

ocuses the load on the parity

group

sthatare in currentuse, which can

decrease performance.

XP24000 Thin Provisioning Software User's Guide

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 65 66

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