HP StorageWorks Performance Advisor XP Software user guide (T1789-96025, October 2007)

Components of t
he Performance Estimator scre en
Table 34 lists the components that appear in the Performance Estimator screen.
Table 34 Perfor
mance Estimator sc reen components
Component Description
ACP Pairs
The number of Array Control Processor (ACP) pairs.
CHIP Pairs
The number of Cl
ient Host Interface Processor (CHIP)
pairs.
Disk Type
The number of gigabytes available on the drive.
Low Latency
Refers to a light load with less delay.
Moderate Latency
Refers to a hea
vier load with greater delay.
RAID 1
A RAID 1 “array group” consists of four disks
(2D + 2P). Usable capacity is 50% of raw capacity.
RAID 5
A RAID 5 “array group” consists of four disks
(3D + 1P). Usable capacity is 75% of raw capacity.
RAID Group Split
Use this field
to adjust the load and gather
performance estimates.
Raw Capacit y
Raw capacity is obtained from disk capacity
minus 10%.
R.T . (ms)
Response time as expressed in millisecond s.
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Performance Estimator