Ciprico 6500 manual Types of Rebuilds

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Chapter 4 Maintenance, Troubleshooting & Hardware Replacement

Types of Rebuilds

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Types of Rebuilds

The next task required is to rebuild data onto the new drive in the array.

In this nine-disk array, eight drives are used for data storage and the ninth for parity checking. No matter which drive is replaced, it is possible to use the remaining drives to reconstruct the missing information.

Off-Line Rebuild

An off-line rebuild occurs when the subsystem is off-line and remains off-line throughout the rebuild process. During an off-line rebuild the array will be unavailable for use. To complete the rebuild in the shortest amount of time, do an off-line rebuild, with the percentage of time dedicated to rebuilding set to 99%.

Percentage Rebuild

A percentage rebuild occurs when the subsystem is on-line. During a percentage rebuild the drive's data is rebuilt concurrent with other operations. The percentage of time allotted to the rebuild process can be selected via the display/operation panel. Completion time for a percentage rebuild will vary with the percentage selected and the intensity of system activity directed at the array and the size of the disk.

During Rebuild

Following is a brief description of what happens as the array rebuilds a drive. The controller board will:

1.Apply power to the replacement drive's drive spindle motor, spinning up the drive.

2.Rebuild the data. In this step, data is read from other drives and reconstructed on the new drive.

Note If the rebuild is interrupted, for example, if the array is powered down or the rebuild is canceled, the process will terminate in an orderly manner. However, when the rebuild is re-initiated, it will not resume where it stopped but will start over, repeating both of the above steps.

Completing	Upon completion of the rebuild process, the display/operation panel will revert
the Rebuild	from67$786indicating2.the type of rebuild in process and will display 5(%8,/''21(
	. Subsystem operation will continue normally.

6500 Disk Array User’s Guide

21020690 B

Image 79

Contents Ciprico Disk Array Page Page Chapter Programmer Reference This Guide PrefaceNotational Conventions Revision History Fire Shock Hazards Power CordUnited States Electro- magnetic CompatibilitySafety Listings Certification Contents Array Options ON/OFF Line Scsi ID Password LOG Pages Error Counters Removal Table of Contents Table of Contents 21020690 B Disk Array User’s Guide S c r i p t i o n Ciprico 6500 Disk Array 21020690 B Disk Array User’s Guide This ChapterDisk Array Functions Application Scsi Compatibility Features and OptionsParity Drive Enclosure Enclosure Air Filter Controller Board Primary ComponentsPrimary Components Disk Array User’s Guide 21020690 B Display Reset SwitchSelect Switch Navigation Switches Up, Down, Left, RightScsi Connectors Activity LED Rear Panel Switches ConnectorsPage Installation Installation Move Array to Operation Site Step Mount Enclosure Installation ProcedureStep Attach Scsi Cable Terminate Scsi Bus, if Necessary Drive Status Step Power Up Host System Step Configure ArrayDrive Status Codes Page S p l a y / O p e r a t i o n P a n e l Change operating parameters, and manually control the array 6500 Display/Operation Panel Controls and IndicatorsInitial Display Array Power Up and Built-In Self-TestOperation Guidelines BistMenu Option Descriptions Default SettingsChanging or Selecting a Menu Option Saving Changes Chapter Display/Operation Panel Operation Guidelines Display/Operation Panel Operation Guidelines Chapter Display/Operation Panel Operation Guidelines Display/Operation Panel Operation Guidelines Chapter Display/Operation Panel Operation Guidelines Scsi ID ON/OFF LineEnter a new password as follows Press the down arrow Enter a New PasswordWrite AlarmClear Password Unit AttentionRPT AS DefaultsRecover SET1250$7,21 Initiator CapacityInfo MEGoMETER Display Rebuild Data REBUILD% RebuildSector Size Data Fill Start FormatDrive Disable DriveStatus Drive n Model Drive InfoDrive n REV DRV n ERR Count / Medium DRV n ERR Count / RecoveredEntry k / Drive n Drive Failures Recovered / vvvvv Errs Enable LOGReset LOG Recovered / wwwww ErrsPage Maintenance, Troubleshooting & Hardware Replacement Checking Enclosure Cooling Fan Operation Power Supply Periodic Maintenance GuidelinesCleaning Enclosure Air Filter Failure Detection and Troubleshoot- ing Guidelines Audible Alarm Failure IndicatorsError/Failure Messages Built-In Self Test Bist Failures IndicatorsIf%86,6+/ you$,7,1* see this HandlingDrive Test Failures Disk Drive Failures 21/,15555 If you555 see this5Array Temperature Over- temperature FailuresTroubleshoot- ing Guidelines Hardware Field Replaceable Units FRUs Field Replacement Guidelines Location FRUs ArrayPage Top Cover Removal 21020690 B Disk Array User’s Guide Enclosure Top Cover RemovalController Board Removal Display Operation Panel Removal Power Supply Removal Power Supply Removal-Mechanical Disconnection Cooling Fan Removal Cooling Fan Removal/ReplacementPower Switch Removal Determining Drive Failure Drive Failure Replacement RebuildingReporting Drive Failure Drive Failure To Turn Off Alarm, Press Select KeyIndications Disabling a Failed Disk Drive Drive Setup Requirements Disk Drive ReplacementDisk Drive Removal Types of Rebuilds Initiating a Rebuild MenuError Code Meanings Drive Error Code During RebuildPress the up arrow.6 Formatting the ArrayArray Formatting Message Definitions Formatting Error Code CorrectReplacing EEPROMs Updating FirmwareDisk Array User’s Guide 21020690 B Page Numerics Index Scsi SCSI-P Page 21020690 B