Creating a Unit

3DM2™ Online Help

Creating a Unit
In 3DM2, creating a unit starts from the Management >> Maintenance page.
Show 3DM2 Maintenance Page
To create a unit

1 | In 3DM2, choose Management >> Maintenance.

2 | In the Available Drives list, select the drives you want to include in the unit by marking the checkbox in front of the VPort number for each one.

All drives in a unit must be of the same type—either SAS or SATA.
Although the best practice is to create a unit from drives in the same enclosure, you can create a unit with drives from different enclosures.

3 | Click Create Unit.

A window similar to the one below shows the drives you selected, and lets you specify configuration settings.
Show Configuring a Unit in 3DM2

4 | In the Type field, select the RAID configuration you want.

5 | If stripe size applies to the RAID type you select, select a Stripe Size. (Stripe size does not apply to RAID 1.)

6 | Optional: In the Name box, enter a name for the unit (up to 21 characters, including dashes and underscores).

7 | If you have 12 drives attached to the controller and selected RAID 50 as the configuration in step 3, select whether you want 3, 4, or 6 Drives Per Subunit, as shown here.

Show Configuring a RAID 50 with 12 Drives

8 | Make changes to the unit policies, as desired. You can enable or disable the Write Cache, Auto-Verify, and Overwrite ECC. You can also set the StorSave policy, the Rapid RAID Recovery policy, and the Read Cache policy

For details about these settings, see Setting Unit Policies.

9 | Click OK.

The new unit appears in the Unit Maintenance list at the top of the page and the operating system is notified of the new unit.
If you have auto-carving enabled and the size of your unit exceeds the carve size, you might see multiple unit volumes in your operating system. For details, see Using Auto-Carving for Multi LUN Support.
In FreeBSD, Linux, Mac OS X, OpenSolaris, and VMware a device node will now be associated with each unit created. In Windows, the device manager will reflect the changes under the disk drives icon.

10 | Partition, format, and mount the unit. The required steps will vary depending on the operating system. For details, see Partitioning, Formatting, and Mounting Units.

| Note: For RAID 5 and RAID 6 units with five or more disks, and RAID 50 units with subunits of five drives or more, initialization (synchronization) of the unit begins immediately. The unit can be used while it is initializing and is fault-tolerant.

Related Topics
  Configuration Options When Creating a Unit
  Maintenance page

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