For iSCSI storage, Unitrends requires an active iSCSI session at all times. Unitrends supports array failover scenarios that utilize iSCSI redirect technologies, but not MPIO or active/passive failover configurations.
Use this procedure to configure iSCSI storage:
1 Add storage using one of these procedures:
Note: Names for iSCSI storage must not contain spaces.
• To add backup storage and create a new device
Note: For archive to iSCSI LUN, it is recommended to not resize the LUN after it has been added to the backup appliance as the new size cannot be detected by the backup appliance.
• To configure a SAN-direct backup for a Recovery-Series system
2 If the iSCSI target is configured for CHAP authentication, you must set up CHAP in the Unitrends system. See About CHAP authentication.
3 Enter the IP address of the SAN storage array in the Host IP address field.
4 The default port used for iSCSI communication is 3260. If the LUN is configured to use a different port, enter it in the Port field.
5 Click Scan for List of Available Targets to retrieve a list of targets on the remote storage array, then choose one from the Select Target list.
Note: If you do not see the LUN in the list, go to your SAN manager and check your LUN configuration:
• Verify that you can see the Unitrends appliance in your SAN manager.
• Verify that you have a LUN assigned to the Unitrends system with the correct permissions.
• Check with your Storage Administrator for more information.
6 Enter the appropriate Logical Unit Number using the LUN counter, or click Scan for List of Available LUNs and select one in the Select LUN list.
Note: If you receive an error indicating CHAP authentication has failed, CHAP has been configured on the target and either CHAP has not been enabled in the Unitrends system, or the Unitrends CHAP credentials do not match those of the target.
7 Click Confirm.
• If you are adding backup storage, continue with this procedure to add the backup device.
• To use this storage for archiving, select it as a target when running or scheduling archive jobs. See the Archiving Overview chapter for details.
• To use this storage for legacy vaulting, select it as a target when adding the backup system to the vault. For details, see Adding the backup system to the vault. Note that replication uses regular backup storage. Vault storage is used for systems that use the legacy vaulting feature only.
8 On the Add Device page, enter a name for the new device in the Device Name field.
This is the name that will be used whenever the device is selected. Device names must be unique and should not contain spaces.
9 Enter the amount of data that can be stored on the new device in the Capacity field.
The Capacity field governs the amount of data that can be stored on the device. The system manages to the capacity limit set and will assure that the data on the device does not exceed the capacity limit. If the capacity chosen exceeds the system license OR if there is not enough space on the file system to accommodate the allocation, a message displays indicating the need to adjust the capacity limit. Options for Capacity settings are:
• Standard Size - Use this to select from a list of values. Click the down arrow next to the device size and select the desired capacity.
• Custom Size - If the desired size of the device is not populated in the standard size list, select this option to specify a capacity.
10 Enter a brief description for the device in the Description field.
11 In the Max Concurrent Backups field, enter the number of backups that can be run simultaneously on the system.
The default value is three. The recommended range is three to ten, depending on network throughput, the number of devices defined, and the resources of the system.
12 Check these boxes as applicable:
• Online box to indicate that the device is online and ready for backups to be written.
• Default box to make this the default device. The default device is used if no other device is specified.
• Select Storage box to select external storage for virtual systems. Deduplication may be enabled on external devices using this feature.
Note: The Pathname displays the location on the system where the backups are stored. This field cannot be edited.
13 Click Confirm to add the device.
To store backups on this device, select it when running or scheduling backups. See the Backups Overview chapter for details.