9 ssd disk cache policy – Avago Technologies MegaRAID Fast Path Software User Manual

Page 322

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Page 322

LSI Corporation Confidential

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July 2011

MegaRAID SAS Software User Guide

Chapter 7: MegaRAID Storage Manager Window and Menus

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MegaRAID Storage Manager Main Menu

NOTE: This property is displayed only for online physical drives.

7.2.9

SSD Disk Cache Policy

The MegaRAID firmware provides support to change the write-cache policy for SSD
media of individual physical drives.

The MegaRAID firmware does not allow any user application to modify the write-cache
policies of any SSD media. The host applications can modify this property through a
new logical device (LD) addition or a LD property change. When SSDs are configured in
a mixed disk group with HDDs, the Physical Device Write-Cache Policy setting of all the
participating drives are changed to match the SSD cache policy setting.

Follow these steps to view the SSD cache property.

1. Click the controller node in the device tree.

The Controller Properties screen appears, as shown in the following figure.

Figure 190: Controller Properties – SSD Disk Cache Policy

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