QNAP

QTS 5.0.x

Adding a Remote Disk

  1. Go to Storage & Snapshots > Storage > Remote Disk.
  2. Click Add Virtual Disk.
  3. Specify the IP address or hostname of the remote server.
  4. Optional: Specify the iSCSI port of the remote server.
  5. Click Get Remote Disk.

    QTS connects to the remote server and then lists all available iSCSI targets.

  6. Select an iSCSI target.
  7. Optional: Specify a CHAP username and password.

    This is required if the remote server has CHAP authentication enabled.

  8. Optional: Enable CRC checksums.

    Initiators and targets communicate over TCP connections using iSCSI protocol data units (PDU). The sending device can send a checksum with each PDU. The receiving device uses this checksum to verify the integrity of the PDU, which is useful in unreliable network environments. There are two checksum types, which can be enabled separately.

    Checksum Type

    Description

    Data Digest

    The checksum can be used to verify the data portion of the PDU.

    Header Digest

    The checksum can be used to verify the header portion of the PDU.

  9. Click Next.
  10. Optional: Specify a disk name.

    The name must consist of 1 to 50 characters from the following groups:

    • Letters: a to z, A to Z

    • Numbers: 0-9

    • Special characters: space ( ), hyphen (-), underscore (_), period (.)

    The following are not allowed:

    • The last character is a space

    • The name starts with "_sn_"

  11. Select a LUN.
  12. Optional: Format the disk.

    Select one of the following options.

    File System

    Compatible Operating Systems and Devices

    ext4

    Linux, NAS devices

    ext3

    Linux, NAS devices

    FAT32

    Windows, macOS, NAS devices, most cameras, mobile phones, video game consoles, tablets

    Important:

    The maximum file size is 4 GB.

    NTFS

    Windows

    HFS+

    macOS

    Warning:

    All data on the LUN will be deleted.

  13. Configure synchronous I/O.

    If the remote server is using ZFS, select the ZFS Intent Log I/O mode for the LUN to improve data consistency or performance.

    Mode

    Description

    Synchronous

    All I/O transactions are treated as synchronous and are always written and flushed to a non-volatile storage (such as a SSD or HDD). This option gives the best data consistency, but might have a small impact on performance.

    Asynchronous

    All I/O transactions are treated as asynchronous. This option gives the highest performance, but has a higher risk of data loss in the event of a power outage. Ensure that a UPS (uninterrupted power supply) is installed when using this option.

  14. Click Next.
  15. Click Finish.

QTS adds the remote disk and shares it at Control Panel > Privilege > Shared Folders. By default only the admin account has access.