IBM System Storage DS3500 Introduction And Implementation Manual page 86

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Figure 3-20 Example of enclosure loss protection
In the example shown in Figure 3-21, if enclosure number 1 fails, the entire array becomes
inaccessible.
Figure 3-21 An array without enclosure loss protection
Best practice: When possible, plan to use enclosure loss protection for your arrays.
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IBM System Storage DS3500: Introduction and Implementation Guide
Draft Document for Review March 28, 2011 12:24 pm