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Chapter 5. Configuring Units
38
3ware Serial ATA RAID Controller User Guide for the Power Mac G5
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
Make changes to the unit policies, as desired. You can enable or disable 
the 
Write Cache
Auto Verify
, and 
Continue on Source Error During 
Rebuild
. You can also set the 
StorSave
 policy.
8
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 may see multiple unit volumes in your operating system. 
For details, see “Using Auto-Carving for Multi LUN Support” on 
page 32.
9
When the Mac OS displays a “Disk Insertion” message, go on to 
“Initializing (Formatting) and Partitioning Units”, below.
Initializing (Formatting) and Partitioning Units
After you create a unit, it needs to be formatted, partitioned, and mounted by 
the operating system before it can be used. 
                                      
                                      
When you create a unit through 3DM 2, the Mac OS X recognizes that a new 
disk is available, and displays a message asking what you want to do. (If this 
message does not appear, you can start the Disk Utility manually from the 
Finder and skip to step 2.)
Note:
 “Initialization” of the unit by the Mac OS is different from 
“initialization” of a unit by 3ware. Initialization under your operating system 
will format your disk, erasing any existing data in the process. Initialization 
under 3ware does not erase data; it puts redundant data on the drives of 
redundant units into a known state so that data can be recovered in the 
event of a disk failure. For more information, see “About Initialization” in 
the 3ware Serial ATA RAID Controller User Guide for the Macintosh.