HP StorageWorks Modular Smart Array 1000 HP Array Configuration Utility User G - Page 4

Controller category...34 Array category...37 Logical Drive category ...37 Error reporting ...40 ACU scripting error messages ...40 Using the Command Line Interface 44 Overview of the ACU CLI ...44 Running the CLI ...44 CLI syntax...45 Keyword abbreviations ...45 Hiding warning prompts...46 Querying a device...46 Help ...46 Typical procedures ...46 Creating a logical drive ...47 Modifying the controller chassis name 49 Using Selective Storage Presentation 49 Deleting target devices ...51 Identifying devices ...51 Expanding an array...52 Extending a logical drive...52 Managing spare drives ...52 Migrating a logical drive ...53 Changing the Rebuild Priority setting 53 Changing the Expand Priority setting 54 Changing the controller cache ratio 54 Changing the surface scan delay time 54 Re-enabling a failed logical drive ...55 Enabling or disabling the drive cache 55 Enabling or disabling the array accelerator 55 Disabling a redundant controller...55 Setting the target ...56 Setting the preferred path mode ...57 Rescanning the system...57 Probability of logical drive failure 58 Factors involved in logical drive failure ...58 Probability of logical drive failure vs. number of drives in array 59 Drive arrays and fault-tolerance methods 60 Drive arrays...60 Fault-tolerance methods ...62 Hardware-based fault-tolerance methods 62 Alternative fault-tolerance methods 67 Diagnosing array problems...68 Diagnostic tools ...68 Acronyms and abbreviations...69 Index...70 Contents 4