User's Manual

Synology DiskStation User's Guide
Based on DSM 3.0
44 Chapter 4: Manage Storage Space
2 Click Edit.
3 Edit the settings to your preference. Click OK to save the changes.
Term Explanation
CRC Checksum: Enable CRC Checksum to check if any error occurred during data transmission.
Multiple Sessions: Allow multiple sessions from one or more initiators to connect to the same iSCSI Target at
the same time. To protect your files from corruption or unexpected data loss, it is strongly suggested that you
use a shared file system or cluster system such as VMware Virtual Machine File System (VMFS) and Oracle
Cluster File System (OCFS).
Masking: Masking allows an iSCSI Target to be exclusively accessed by specified iSCSI initiator IQNs.
To enable or disable an iSCSI Target:
1 Select the iSCSI Target you'd like to enable or disable.
2 Click Enable or Disable.
Manage iSCSI LUN
An iSCSI LUN (logical unit number) can be mapped to multiple iSCSI Targets to perform storage operations such
as read or write.
There are 2 ways to create an iSCSI LUN:
 Designate several disks (Block-Level).
 Designate a portion of your volume space (Regular Files).
If you create an iSCSI LUN with several disks, you can repair or expand it, or change its RAID type, just like using
a volume. (Please see Page 39 of this chapter for detailed information about volume management.)
Maximum number of iSCSI LUNs on a DiskStation:
 256 for Intel-based models, such as DS1010+, RS810+, RS810RP+, etc.
 10 for other models.
To create an iSCSI LUN:
1 Click Create.
2 Select Custom.
3 Click Next.