User`s guide

Synology DiskStation User's Guide

Based on DSM 3.2

36 Chapter 4: Manage Storage Space

 iSCSI LUN (Block-Level) - Single LUN on RAID: The iSCSI LUN is created by combining several hard

disks. Enter the name for the LUN, choose iSCSI Target mapping and click Next. You can create and

manage the LUN just like working with a volume. See "Create a Volume by Combining Several Hard Disks"

on Page 29 for more information about volume creation.

 iSCSI LUN (Block-Level) - Multiple LUN on RAID: The iSCSI LUN is created by allocating partial space on

a Disk Group. Enter the name for the LUN, choose iSCSI Target mapping and click Next. You can create

and manage the LUN just like working with a volume. You can repair or expand it, or change its RAID type,

just like using a volume. See "Create a Volume by Allocating Partial Space on a Disk Group" on Page 29 for

more information about volume creation.

5 About iSCSI Target mapping:

 If you choose Map existing iSCSI targets from the iSCSI Target mapping drop-down menu, you will be

prompted to choose an existing iSCSI Target.

 If you choose Create a new iSCSI target from the iSCSI Target mapping drop-down menu, you will be

prompted to create a new iSCSI Target.

Note: For more information about iSCSI Target creation, see "Manage iSCSI Target with Storage Manager" on

Page 33 .

6 Follow the wizard to complete the setup.

Term Explanation

Thin Provisioning: Thin Provisioning is a method for optimizing storage utilization by allocating storage space

in a dynamic and on-demand manner. This setting is only available for iSCSI LUN (regular files).

iSCSI Target Mapping: Map the iSCSI LUN to one or more iSCSI Targets.

To remove an iSCSI LUN:

By removing an iSCSI LUN, all data on the iSCSI LUN will be deleted. The connection between the iSCSI LUN

and any mapped iSCSI Target will also be lost.

1 Select the iSCSI LUN you'd like to remove.

2 Click Remove.

3 Click Cancel to abort or OK to confirm.

To edit an iSCSI LUN:

1 Select the iSCSI LUN you'd like to edit.

2 Click Edit.

3 Edit the Properties and Mapping to your preference.

4 Click OK to save the settings.

Note: To avoid data loss when editing iSCSI LUN capacity, you can only make it larger than the current size.