Netgear RNRX4410 ReadyNAS 2100 User Manual - Page 41
Working with iSCSI Target Volumes, Replacing All Your Disks for More Capacity - prices
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ReadyNAS 2100 User Manual After you receive your e-mail, the ReadyNAS 2100 will have been expanded with the capacity from your new disk(s). Replacing All Your Disks for More Capacity When you need more disk space and 2 TB disks are available at an attractive price, you can expand your volume capacity by replacing the existing disks. Keep in mind that you must power down several times to replace out your old disks. First, power down the ReadyNAS, replace the first disk with the large-capacity disk, and then reboot. If your ReadyNAS supports hot-swapping, you can hot-swap the disk without powering down. The ReadyNAS will detect that a new disk was put in place and resynchronizes the disk with data from the removed disk. This process takes an hour or longer, depending on disk capacity, and you can use the ReadyNAS while the new disk synchronizes. Upon completion, replace the second disk with another large-capacity disk, allow that disk to sync, and reboot. You can expand to additional disks by doing the same thing as the 2nd disk: replace with a larger disk, allow the disk to sync, and reboot. Changing between X-RAID2 and Flex-RAID Modes You can switch between X-RAID2 and Flex-X-RAID modes. The process involves setting the ReadyNAS 2100 to the factory default and using RAIDar to configure the volume during a 10minute delay window during boot. See "Configuring RAID" on page 6-10 for more information. Working with iSCSI Target Volumes The iSCSI target service enables you to create one or more iSCSI target volumes on the ReadyNAS. The iSCSI (Internet SCSI) protocol allows clients called initiators to send SCSI commands to SCSI storage devices called targets on remote servers. It is a popular Storage Area Network (SAN) protocol, allowing organizations to consolidate storage into data center storage arrays while providing hosts such as databases and web servers with the illusion of locally-attached disks. Unlike Fibre Channel, which requires special-purpose cabling, iSCSI can be run over long distances using existing network infrastructure. An iSCSI initiator sends SCSI commands over an IP network to an iSCSI target. Software to provide an iSCSI initiator is available for most mainstream operating systems. Unlike network file services where you access files in network share folders, the iSCSI target presents itself as a virtual block device and can be treated like a locally attached disk to the client system acting as the iSCSI initiator. Windows for instance could run FAT32 or NTFS on the iSCSI target device, and treat the device as though it was locally attached. Setting Up and Managing Your ReadyNAS 2100 v1.0, May 2009 2-21