Linstor
Linstor is currently the fastest distributed block storage in the cluster, and can be used for tasks requiring minimal latency, such as VM images, docker build space, databases, etc. Also it doesn’t lock the volumes like Ceph does, making it a good option for critical highly available storage volumes.
It uses the DRBD kernel module that handles the replication, and provides nearly native drive performance for I/O operations.
Linstor storage pools data use
Credit: Linstor data use
Currently available Storage Classes:
| StorageClass | Region | AccessModes | Storage Type | Replication factor |
|---|---|---|---|---|
| linstor-ha | 3 replicas spread through different regions | ReadWriteOnce | Mixed | 3x |
| linstor-unl | US Central / UNL | ReadWriteOnce | Spinning drives RAID 10 | 1x |
| linstor-sdsu | US West / SDSU | ReadWriteOnce | NVME | 2x |
| linstor-igrok | US West / UCSD | ReadWriteOnce | NVME | 2x |
| linstor-ucsc | US West / UCSC | ReadWriteOnce | SSDs RAID 10 | 1x |