7914Admin_Logical.fm Draft Document for Review March 28, 2011 12:24 pm
244 IBM System Storage DS3500: Introduction and Implementation Guide
9.5 Working with Logical Drive
The Logical Drive is the main building block of the DS3500 Storage Subsystem. Your host
servers can only see these Logical Drives. The Logical Drive can be tuned by many
parameters and we describe the most of them in the following sections.
The basic information about a Logical Drive is displayed in the Properties pane of Logical tab
(see Figure 9-24).
Figure 9-24 Logical Drive - Logical and Properties pane
The most of the parameters can be modified for each regular Logical Drive separately:
capacity (can be increased)
controller ownership
segment size
modification priority
cache settings
– read cache
– write cache
– write cache without batteries
– write cache with mirroring
– dynamic cache read prefetch
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