Sun Microsystems CP32x0 manual Creating a RAID 1E Volume

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7.When the volume has been fully configured, press C and select Save Changes, then exit this menu to commit the changes.

The Configuration Utility will pause while the array is being created.

Note – RAID 1 provides protection against the failure of a single disk. When a disk fails, it is rebuilt to a hot spare if one is available. This can greatly increase the level of protection that RAID 1 provides.

Note – Even though multiple volumes can be created, the hot spare is a global hot spare. Only one active hot spare is allowed for all volumes.

3.6Creating a RAID 1E Volume

A RAID 1E volume, also referred to as an Integrated Mirroring Enhanced (IME), combines the ability of RAID 0 to stripe data and the ability of RAID 1 to mirror the now-striped data. This can increase reliability of RAID 0 by adding the mirroring feature of RAID 1. Use RAID 1E for arrays with an odd number of disks. A minimum of three disks are needed to configure RAID 1E. Follow these steps to create a RAID 1E volume on an adapter that does not currently have a volume configured.

1.In the Configuration Utility, select an adapter from the Adapter List screen.

2.Select the RAID Properties option.

3.When you are prompted to create either an IS volume, and IME volume, or an IM volume, select Create IME Volume.

The next screen shows a list of disks that can be added to a volume.

4.Move the cursor to the RAID Disk column. To add a disk to the volume, change the “No” to “Yes” by pressing the + key, - key, or space bar.

When the first disk is added, the utility will prompt you to keep existing data or overwrite existing data.

5.Press M to keep the existing data on the first disk or press D to overwrite it.

If you keep the existing data, this is called a migration. The first disk will be mirrored onto the second disk, so the data you want to keep must be on the first disk added to the volume. Data on all other disks will be lost.

3-6Netra CP32x0 SAS Storage Advanced Rear Transition Module HD User’s Guide • January 2009

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Contents Sun Microsystems, Inc Please Recycle Contents Disk Management 3-1 3.1 RAID Support Index Index-1 Page Figures Page Tables Page Preface How This Document Is OrganizedUsing Unix Commands Shell PromptsTypographic Conventions Related Documentation Sun Welcomes Your Comments Documentation, Support, and TrainingThird-Party Web Sites Page Overview Features of the ARTM-HD Picmg Standards Compliance Airflow Cooling RequirementsPressure Drop Rates ARTM-HD Component Diagram 1Netra CP32x0 ARTM-HD ComponentsI/O Interfaces 3Netra CP32x0 ARTM-HD I/O Configurations Hard Disk Drives Hard Disk Drive ControllerExternal SAS Connectors 3Connecting to an External Disk Array4Connecting to Another Artm LEDsSoftware Support LEDsPage Part Number, Serial Number, and FC Address Labels Part number label Serial number labelPage Installation and Service About Installing and Removing ARTM-HD1Installing the Blade Server and ARTM-HD Into the Atca Shelf Installing the ARTM-HD Retention screw Injector/ejector latch 3Holding the ARTM-HD During Installation 4Inserting the ARTM-HD Power on the system, if necessary Removing the ARTM-HD 5Removing the ARTM-HD Installing a Hard Disk Drive Removing a Hard Disk Drive6Jumper setting for red OOS LED P1/P2 Changing the OOS LED ColorReinstall the ARTM-HD Page Disk Management SAS Bios Overview RAID SupportStarting the SAS Bios Configuration Utility Creating a RAID 0 Volume Creating a RAID 1 Volume Creating a RAID 1E Volume Viewing RAID Volume Properties Synchronizing an Array Activating an ArrayDeleting an Array Locating a Disk DrivePage Specifications and Connectors Specifications for the ARTM-HD Physical DimensionsHardware Descriptions Ethernet Management PortConnectors and Pin Assignments 1shows the location of the connectors1 I/O Connectors Serial Port SAS Connectors Zone 3 Connectors 4lists the Zone 3, J31 connector pinouts 6lists the Zone 3, J33 connector pinouts Bios SAS RAID Index