Hp XP P9500 Storage Bedienungsanleitung PDF herunterladen (Seite 11)

3 Defining devices

This topic contains information on selecting base and alias device ratios, and procedures for

defining LCUs and devices using HCD (hardware configuration definition).

Parallel Access Volumes users use the HCD program to define logical control units (LCUs) and

Parallel Access Volumes devices to the host system.

Selecting optimum base/alias device ratio

Optimizing the number of alias devices in a LCU is best done using analysis of RMF data. As part

of sizing the performance of your P9500, HP will provide recommendations for the number of

aliases based on the current configuration. In most cases, the number of recommended aliases

differs depending on which type of PAV is used (static, dynamic, or Hyper). HPs tool will predict

the appropriate number of aliases by LCU even if PAV is not currently being used in your

environment.

Defining an LCU

Use the Hardware Configuration Definition (HCD) program to define an LCU on a storage system.

Prerequisite

Channel paths must be defined.

Procedure 1 To define an LCU on a storage system:

1. From the ISPF/PDF primary options menu, select the HCD option to display the HCD main

screen.

2. Verify the name of the Work IODF to be used, and then select option 1 to display the Define,

Modify or View Configuration Data screen.

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Hp XP P9500 Storage Bedienungsanleitung Seite 11