RAID Calculator

  • 6 TB
  • 5 TB
  • 4 TB
  • 3 TB
  • 2.5 TB
  • 2 TB
  • 1.5 TB
  • 1 TB
  • 750 GB
  • 640 GB
  • 500 GB

Drag a HDD here

Step 1 : Pick a HDD and drag it to a HDD tray
Step 2 : Select the RAID type you wish to be compared, and the result will be available immediately
Step 3 : Select the recommended models and compare them

Step 1 : Pick a HDD and drag it to a HDD tray

1

Step 2 : Select the RAID type you wish to be compared, and the result will be available immediately

RAID Type
Space Unused space Used for protection Available space
  • Insufficient HDD, drag more HDD for this RAID type
  • Insufficient HDD, drag more HDD for this RAID type

Step 3 : Select the recommended models and compare them

Recommended Models
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Notes
  1. Visit here for more information on choosing the correct HDD for your Synology DiskStation.
  2. Synology RAID Calculator offers you an estimate on the space utilization with various mixed HDD configurations and RAID types. Actual HDD sizes can vary between vendors, and values calculated may differ from actual results. Please refer to Synology Storage Manager for precise data calculations for storage installed in your Synology DiskStation.
  3. When using SHR or SHR-2 HDD protection as your RAID type, the Unused space will be automatically reserved for future expansion. On the contrary, Unused space under other RAID types indicates the space that can't be utilized and is thus wasted.
  4. The result of calculation helps you evaluate the available space when you are creating a new volume only. If you're going to expand an existing volume, please read Expand Volumes or Disk Groups by Adding Hard Disks and Expand Volumes or Disk Groups by Replacing Hard Disks for detailed information.