Using iSCSI with QNAP TS-112

Not all NAS provides iSCSI. Once it is connected, you need to partition and format before using. It works as local disk and cannot be resize easily.

It is a block level protocol.

iSCSI Target from TS-112 benchmark by GNOME Disk.
iSCSI Target from TS-112 benchmark by GNOME Disk.

It provides server and authentication control. You may make shared folders public to host/IP or create a user name and password for authentication. It is not a good idea to allow multiple hosts to connect to a single iSCSI array with read and write at the same time because it is a block level protocol without file locking.

Enable iSCSI, Create iSCSI Target, and Policies on QNAP TS-112

On TS-112, you may enable it in [Portal Management] of [Control Panel]→[System Settings]→[Storage Manager]→[iSCSI]. Then add you iSCSI Target with [Quick Configuration Wizard] in tab [Target Management]. You may enable [CHAP Authentication Settings] with user name and password in step3. After creation, change the default size of selected iSCSI Target by clicking [Modify] from [Action].

Server control is implement by policies. To create or manage existing policies, use [Control Panel]→[System Settings]→[Storage Manager]→[iSCSI]→[Advanced ACL]. You will need the initiator name from client computers. More detail can be found in How to Configure iSCSI Advanced ACL on QNAP Turbo NAS.

Access iSCSI Target from Computer

On my desktop computer, I use [iSCSI Initiator] in YaST. You will see the [Initiator Name] in tab [Service] which is necessary in QNAP iSCSI policy in previous section. Switch to tab [Connected Targets] and click [Add] to config. You need to provide the IP of your iSCSI Target and authentication information if needed (up to your configuration in NAS). Choose the iSCSI Target from list and click [Connect]. Again, fill in authentication information if needed and select when to connect. Now, it will connect the iSCSI Target on boot or manually.

You shall be able to see a new disk in you disk tool. Partition and format it before using if it is new.

iSCSI Target is very stable compared to Samba and NFS on TS-112. I didn’t encounter any crash or freeze during test. You may also use disk benchmark tools with it.


  1. Lenovo: ThinkCentre Edge 72z
  2. QNAP: TS-112
  3. Wiki: Oracle VDI
  4. Connect NAS to your Computer Directly
  5. LFTP for NAS with FTP Server
  6. FreeFileSync for Internal or External Device
  7. RedHat: Customer Portal: Support: 10.3. Using the Cache With NFS
  8. PCMagazine: Definition of:block level
  9. ExpertReview: Synology DiskStation DS213j review
  10. StorageReview: Synology DiskStation DS214se Review
  11. Ars OpenForum: file copy speed vs FTP
  12. Stephen Yeong’s Blog: Samba 50MB per second limit?
  13. reddit: NFS vs iSCSI, fight! (your thoughts on performance)
  14. superuser: AFP, SMB, NFS which is the best data transfer protocol?
  15. Apple Support Communities: iSCSI, AFP, SMB, and NFS performance with Mac OS X 10.5.5 clients
  16. AskUbuntu: Which to use NFS or Samba?
  17. QNAP Forum: VPN Centre + proxy Server
  18. QNAP Forum: TS-212 SMB速度疑問
  19. QNAP: TS-112
  20. [H]ard|Forum: SSD to NAS file transfer over gigabit – why only 30MB/s?
  21. QNAP Turbo NAS User Manual: NAS Maintenance Settings: System Restart/Shutdown
  22. Wiki: File Transfer Protocol
  23. nixCraft: Linux / Unix: lftp Command Mirror Files and Directories
  24. MetaLinux: lftp: backup and mirroring
  25. Wiki: Samba (software)
  26. Wiki: Server Message Block
  27. Wiki: Nautilus (file manager)
  28. GNOME
  29. QNAP Forum: Windows 8
  30. ServerFault: SMB claimed to be “slow”
  31. Wiki: iSCSI
  32. TechRepublic: When is it okay to allow multiple hosts to connect to a single iSCSI array?
  33. Wiki: iSCSI: Target
  34. QNAP: How to Configure iSCSI Advanced ACL on QNAP Turbo NAS
  35. Mobile01: [教學]利用Synology的NAS在Windows7下建立iSCSI磁碟機
  36. Wiki: YaST
  37. Wiki: Network File System
  38. nfs-lan
  39. GitHub: NFS-LAN
  40. QNAP Forum: NSF4 Firmware 3.8.1
  41. Mobile01: 有關 NAS 所支援的 NFS 版本
  42. QNAP Community Wiki: Mounting NFS
  43. QNAP Turbo NAS User Manual: Network Services: NFS Service
  44. The Linux Information Project: The umount Command

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