Planning volumes in Storage Spaces Direct
-
Choosing how many volumes to create
- recommend making the number of volumes a multiple of the number of servers in your cluster, one server handles metadata orchestration for each volume
- one volume per host
-
Choosing the filesystem
- the new Resilient File System (ReFS) for Storage Spaces Direct.
- If your workload requires a feature that ReFS doesn’t support yet, you can use NTFS instead.
-
Choosing the resiliency type
-
With two servers
- The only option for clusters with two servers is two-way mirroring
-
With three servers
- With three servers, you should use three-way mirroring for better fault tolerance and performance.
-
With four or more servers
- With four or more servers, you can choose for each volume whether to use three-way mirroring, dual parity (often called “erasure coding”), or mix the two.
-
-
When performance matters most
- Should run on volumes that use mirroring to maximize performance.
-
When capacity matters most
- Should run on volumes that use dual parity to maximize storage efficiency.
-
When data is written in bulk
- one volume can mix mirroring and dual parity.
-
Choosing the size of volumes
-
Footprint
- usable capacity, the amount of data it can store
-
Reserve capacity
- volumes space to repair “in-place” after drives fail, improving data safety and performance.
- recommend reserving the equivalent of one capacity drive per server, up to 4 drives
-
Add a Comment