ZFS combines RAID, Volume Management and Filesystem into a single, cohesive platform allowing for ease of administration with a focus on data integrity and capacity. Utilizing a 256-bit SHA checksum on every block, ZFS can detect and correct data corruption at any tier of the storage stack automatically during access. Storage pools can also be "scrubbed" for data consistency at any time, either through scheduled jobs or manually by an administrator. ZFS capacity can also be increased without taking your storage out of service utilizing a process called "resilvering". Utilizing deduplication and compression, capacity can be further increased. Advanced features, such as snapshots further help protect data by storing incremental information in cases of user error. Our ZFS storage solutions include XigmaNAS (Formerly NAS4Free), FreeNAS, OpenIndiana, FreeBSD, and NexentaStor.