Adding Storage; Primary Rack Expansion; Secondary Rack Expansion; Flexibility - HP StorageWorks XP20000/XP24000 - Disk Array Owner's Manual

One 60–disk chassis

Adding storage

You can add more disk chassis in this order: R0, R1, R2, and R3. Each disk chassis contains 60 hard
disk drives.
Your HP support representative can add disk chassis and disk drives online with no interruptions to
applications or hosts. Additional details about each rack follow.

Primary rack expansion

In addition to the basic disk chassis R0, you can expand the disk array in the primary rack as follows:
Add 60–disk chassis R1 to the top space of the primary rack. This provides a total of up to 120
drives.

Secondary rack expansion

You can add a second 19–inch rack with additional disk units as follows:
Add one 60–disk chassis to the second rack for a total of up to 180 drives
Add a second 60–disk chassis to the second rack for a total of up to 240 drives

Flexibility

The new optional HP StorageWorks XP Thin Provisioning software significantly improves system
flexibility while also decreasing storage costs. Using this solution, you begin operation with a global
pool of LDEVs that are not assigned to physical storage. The disk arrays add virtual capacity from
the pool of LDEVs on the fly as data is written, and only at that time is physical capacity assigned to
LDEVs and consumed.
Later, if you need additional storage capacity, you can add it without downtime. To create new LDEVS,
the system simply continues to use LDEVs from the pool, assigning them to the new physical storage
automatically as required.
For more information, see the HP StorageWorks XP24000/XP20000 Thin Provisioning User s Guide.

Data encryption

HP StorageWorks DKA Encryption License Key provides physical disk encryption (AES-256) compatible
with open and mainframe systems. Encryption can be applied to some or all internal drives with no
throughput or latency impacts for data I/O and with little or no disruption to existing applications
and infrastructure. HP DKA Encryption License Key includes integrated key management functionality
that is both simple and safe to use. For more information, see the HP StorageWorks XP24000/XP20000
Disk Encryption User's Guide or contact your HP account representative.

HP XP24000/XP20000 product contents

The HP XP24000/XP20000 disk array products include hardware, software, services, and support.
Some additional components are required and others are optional, as described in this section. For
the most current product information, visit the HP website:
http://h18006.www1.hp.com/storage/enterprisestorage.html
10 Overview of the HP XP24000/XP20000 Disk Array