[Documentation](../../README.md#documentation) → Introduction → Features

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[Читать на русском](features.ru.md)

# Features

- [Server-side features](#server-side-features)
- [Plugins and tools](#plugins-and-tools)
- [Roadmap](#roadmap)

## Server-side features

- Basic part: highly-available block storage with symmetric clustering and no SPOF
- [Performance](../performance/bench2.en.md) ;-D
  - [NVMe atomic write support](../config/osd.en.md#atomic_write_size) for reducing the amount
    of "extra" disk writes to almost zero (Write Amplification = 1)
- [Multiple redundancy schemes](../config/pool.en.md#scheme): Replication, XOR n+1, Reed-Solomon erasure codes
  based on jerasure and ISA-L libraries with any number of data and parity drives in a group
- Configuration via simple JSON data structures in etcd (parameters, pools and images)
- Automatic data distribution over OSDs, with support for:
  - Mathematical optimization for better uniformity and less data movement
  - Multiple pools
  - Placement tree, OSD selection by tags (device classes) and placement root
  - Configurable failure domains
- Recovery of degraded blocks
- Rebalancing (data movement between OSDs)
- [Lazy fsync support](../config/layout-cluster.en.md#immediate_commit)
- [Localized read support](../config/pool.en.md#local_reads) for cross-datacenter setup optimization
- Per-OSD and per-image I/O and space usage statistics in etcd
- Snapshots and copy-on-write image clones
- [Write throttling to smooth random write workloads in SSD+HDD configurations](../config/osd.en.md#throttle_small_writes)
- RDMA/RoCEv2 support [via libibverbs](../config/network.en.md#use_rdma) or [RDMA-CM](../config/network.en.md#use_rdmacm)
- [Scrubbing](../config/osd.en.md#auto_scrub) (verification of copies)
- [Checksums](../config/layout-osd.en.md#data_csum_type)
- [Client write-back cache](../config/client.en.md#client_enable_writeback)
- [Intelligent recovery auto-tuning](../config/osd.en.md#recovery_tune_interval)
- [Clustered file system](../usage/nfs.en.md#vitastorfs)
- [Experimental internal etcd replacement - antietcd](../config/monitor.en.md#use_antietcd)
- [Built-in Prometheus metric exporter](../config/monitor.en.md#enable_prometheus)
- [NFS RDMA support](../usage/nfs.en.md#rdma) (probably also usable for GPUDirect)
- [S3](../installation/s3.en.md)

## Plugins and tools

- [Proxmox storage plugin and packages](../installation/proxmox.en.md)
- [OpenNebula storage plugin](../installation/opennebula.en.md)
- [CSI plugin for Kubernetes](../installation/kubernetes.en.md)
- [OpenStack support: Cinder driver, Nova and libvirt patches](../installation/openstack.en.md)
- [Debian and CentOS packages](../installation/packages.en.md)
- [Image management CLI (vitastor-cli)](../usage/cli.en.md)
- [Disk management CLI (vitastor-disk)](../usage/disk.en.md)
- Generic user-space client library
- [Native QEMU driver](../usage/qemu.en.md)
- [Loadable fio engine for benchmarks](../usage/fio.en.md)
- [UBLK](../usage/ublk.en.md) and [NBD](../usage/nbd.en.md) servers for kernel mounts
- [Simplified NFS proxy for file-based image access emulation (suitable for VMWare)](../usage/nfs.en.md#pseudo-fs)

## Roadmap

The following features are planned for the future:

- Control plane optimisation
- Other administrative tools
- Web GUI
- iSCSI and NVMeoF gateways
- Multi-threaded client
- Faster failover
- Tiered storage (SSD caching)
- NVDIMM support
- Compression (possibly)
