Glyph cy-misan-v User Guide

Configuring Drives

Creating a Hot Spare

You can designate an available drive as a hot spare. If a unit degrades and a hot spare
the size of the degraded disk (or larger) is available, the hot spare will dynamically
replace the failed drive in the unit without user intervention. When this occurs, an event
notification is generated and appears in the list of alarms in 3DM. 

It’s a good idea to select a hot spare after you create a redundant unit. In order to replace
a failed drive, a hot spare must have the same or larger storage capacity than the drives it
is replacing. 

To specify a hot spare after the system is booted:

1. In the 

Available Drives section of the Maintenance page, select the drive by

checking the box next to it.

2. Click 

Create Unit.

3. In the dialog box that appears, select the configuration type 

Spare.

4. Click 

OK. You will see the spare appear at the top of the page, under Unit

Maintenance.

Adding a Drive

If you have a hot-swap carrier, you can add a drive to your system and make it available
through 3DM without powering down the system.

To add a drive through 3DM when you have hot-swap carriers:

1. Connect the drive physically to the controller.

2. In 3DM, choose 

Management > Maintenance.

3. Click 

Rescan Controller.

The drive will appear in the list of available drives. You can now use it in a new RAID
configuration, or as a replacement drive in the event that another drive degrades.

4. If you want to use this drive as a spare, see “Creating a Hot Spare” above.

Removing a Drive

If you have a hot-swap carrier and want to physically remove a drive from your system
without powering it down, you must first remove it through the 3ware software.