HP 3PAR OS 3.1.3 CLI Administrator's Manual

16 HP Priority Optimization
Consolidation of storage systems reduces the complexity of data storage, delivering efficiency in
management, occupied floor space, and energy consumption. However, the consolidation of many
disjointed workloads into a single storage system also results in contention for shared system
resources on the system.
Examples of shared resources include front-end host Fiber Channel (FC), iSCSI and FCoE adapters,
back-end FC or SAS disk connections, physical disks, data and control cache, ASICs, CPUs, and
backplane interconnections. Data packets arriving at the front-end FC HBA adapters are handled
on a first-come, first-serve basis. Processing data packets on a first-come first-serve basis can lead
to unequal and inconsistent throughput for multiple concurrent workloads.
HP 3PAR’s Priority Optimization software manages and distributes the I/O capacity of an HP 3PAR
StoreServ Storage system across multiple workloads. The tool enables the co-location of the data
of workloads of different types, such as sequential, random, online transaction processing (OLTP),
with different I/O packet sizes on a single storage system while achieving adequate and stable
performance in a multi-tenant environment.
Requirements
HP 3PAR Priority Optimization is supported on all HP 3PAR StoreServ Storage systems that are
certified for HP 3PAR OS 3.1.3:
• HP 3PAR StoreServ Storage F-Class
• HP 3PAR StoreServ Storage T-Class
• HP 3PAR StoreServ Storage 7000
• HP 3PAR StoreServ Storage 10000
A valid license for HP 3PAR Priority Optimization is required on the HP 3PAR StoreServ Storage
system. The HP 3PAR Priority Optimization has its own license key. The license is spindle-based,
available a-la-carte and as part of the Data Optimization Suite available for HP 3PAR StorServ
7000 and HP 3PAR StorServ 10000 systems. Consult your HP representative or authorized HP
partner for more information on HP 3PAR Priority Optimization licensing.
Creating and managing Quality of Service (QoS) definitions requires the HP 3PAR MC 4.5 and
later. To use the command line, you must install HP 3PAR CLI 3.1.3.
Reports on HP 3PAR Priority Optimization are available through HP 3PAR System Reporter 3.1
MU1 and later, and through the HP 3PAR MC 4.5 and later. The reports on the QoS definitions
require a license for HP 3PAR System Reporter.
While QoS is in principle OS-agnostic, see the HP SPOCK website for the list of operating systems
that are certified for use with HP 3PAR Priority Optimization:
http://www.hp.com/storage/spock
Using HP 3PAR Priority Optimization
You can manage HP 3PAR Priority Optimization with the HP 3PAR CLI. This section describes
procedures and best practices.
Requirements 153