Creating Volumes

1 In the Cloud Storage Gateway web interface, go to Storage > Volumes and click New.

a Choose either an array on which to create the volume or a drive that is not part of an array. The size of each array and drive is shown in brackets.

b Set the size of the volume. You can either drag the slider or enter a number of GB. (If you're modifying a volume and snapshots are enabled, you cannot shrink the size.)

XFS volumes are limited by CTERA to 64TB. Further limitations apply through the physical disk sizes that can be incorporated in the appliances (up to 8 x 4TB disks in the C800 / C800+). The Virtual Gateway’s size is limited by the underlying disks; the available Virtual Gateway license is 16TB.

c Choose the volume type: either File System (NAS) or Raw Volume (SAN). NAS volumes can be accessed using all the file sharing protocols supported by the gateway. SAN volumes can be accessed only by iSCSI. If you create a SAN volume, you will need to create an iSCSI target to enable access to the volume. Once the volume is created, you cannot change the volume type.

d Select the file system. XFS is not supported on the C200 appliance.

• If you select NAS volumes as the file type, an addition check box, Support Snapshots, is displayed. Check this check box to enable NEXT3 snapshots for the volume. The volume will be installed with the NEXT3 file system, and snapshots will automatically be taken of the volume before each cloud backup or outgoing synchronization rule is performed.

This option relates to NEXT3 snapshots only, and clearing it will not prevent cloud snapshots from being created. For information on types of snapshots, see Volume Snapshots.

e Check to limit the amount of storage space allocated to each volume user. Each user can then be allocated a specific storage space quota, as described in Allocating Disk Quotas to Users. If quotas are not enabled, then each user will be able to use unlimited space on this volume.

f Check to set a default storage space quota for volume users. Type the default quota in MB in the field. This quota will be allocated to each user by default.

If this option is not enabled, an unlimited amount of space will be allocated to each user, by default. Either way, the default allocated quota can be overridden.

a Check this box to encrypt the contents of this volume. This check box is disabled when editing a volume.

b If you checked Make this volume encrypted, type the passphrase you want to use for accessing the volume.

c Retype the passphrase.

d Displays the passphrase's strength.

Warning: It is important to keep the passphrase in a safe place, as there is no way of retrieving it if you lose it. If you reset your cloud storage gateway to its default settings, you cannot access the volume without this passphrase.

Note: Volume encryption is supported both for standalone volumes and volumes residing in RAID arrays.

Note: The encryption method employed is the Advanced Encryption Standard (AES-256 CBC ESSIV). Enabling volume encryption may reduce performance.