Can I create multiple RAIDs with different size drives on Synolgy NAS

Can I create multiple RAIDs with different size drives on Synolgy NAS.

Think I am wanting to use the same mirroring setup as I have at the moment ie second drive mirrors the first.

With the Ds918 having 4 drives, I assume I can make drive 2 mirror 1 and drive 4 mirror 3 but can I use different size drives for each pair. IE 2x 6tb for drives 1 and 2 and 2 x 10tb for drives 3 and 4 ? or do they all have to be the same size ?

Yes, you can have two RAID1 groups:

Bay 1&2= RAID1

Bay 3&4= RAID1.

You can also use two 6TB drives in first RAID and two 10TB drives on second RAID. You could also create a single RAID with SHR1/2 and mix all these four different size drives together. This would give you more storage space.  That would be 22TB instead of 16TB (10+6TB).

I hope this helps.

To create a storage pool:

1. Open Storage Manager.
2. Go to Storage Pool and click the Create button.
3. Choose the storage pool type:
   • Better performance: This type of storage pool supports only a single volume but provides better performance.
   • Higher flexibility: This type of storage pool supports multiple volumes, Synology Hybrid RAID (SHR), and the RAID Group feature.
4. Configure storage pool properties:
   • Storage pool description: A description of this storage pool.
   • RAID type: Different RAID types offer varying levels of data protection. For more information, please refer to General.
   • Minimum number of drives per RAID: The minimum number of drives required for the selected RAID Type.
   • Maximum number of drives per RAID: A higher number of drives per RAID increases the probability of RAID failure. We recommend adjusting the number limit of drives in a single RAID and using RAID Group to strike a balance between data security and storage pool capacity.
   • RAID Group feature: Whether the RAID Group feature is supported by the selected RAID type. While a single RAID has a restriction on the drive number, the RAID Group feature allows your storage block to be composed of multiple RAIDs, thus increasing its capacity and drive redundancy. RAID Group is supported by RAID 5, RAID 6, and RAID F1.
5. Follow the remaining steps of the wizard to finish creating the storage pool.

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