Netgear RN3138 Software Manual - Page 38

ReadyNAS OS 6.4 Number of Disks per Volume RAID Level Can I add a disk to for data protection? 3 or more 4 or more (even number) 4 or more RAID 5 RAID 10 RAID 6 Yes. (Additional disk provides dual redundancy and converts the volume to RAID 6.) No. (Volume protection is already redundant.) No. (Volume is already protected with dual redundancy.) Disks added to a Flex-RAID volume can be used only for protection. They cannot be used for storage (horizontal expansion). If you want to add a disk for increased storage capacity, you must do one of the following: • Create a volume using the added disks (see Create and Encrypt a Volume on page 31). • Change the RAID level (see Change to a Different Flex-RAID Level on page 27). • Switch to X-RAID (see Change from Flex-RAID to X-RAID on page 26). To expand a Flex-RAID volume: 1. Add two disks to your ReadyNAS storage system. For more information about how to add a disk to your system, see the hardware manual for your system, which is available at http://support.netgear.com/product/ReadyNAS-OS6. 2. Select System > Volumes. The new disks are displayed in the enclosure graphic and are colored black. Volume Configuration 38