ZFS is unusual because, unlike most other storage systems, it unifies both of these roles and acts as both the volume manager and the file system. The management of the individual devices and their presentation as a single device is distinct from the management of the files held on that apparent device. The Windows user sees this as a single volume, containing an NTFS-formatted drive of their data, and NTFS is not necessarily aware of the manipulations that may be required (such as reading from/writing to the cache drive or rebuilding the RAID array if a disk fails). The management of stored data generally involves two aspects: the physical volume management of one or more block storage devices such as hard drives and SD cards and their organization into logical block devices as seen by the operating system (often involving a volume manager, RAID controller, array manager, or suitable device driver), and the management of data and files that are stored on these logical block devices (a file system or other data storage).Įxample: A RAID array of 2 hard drives and an SSD caching disk is controlled by Intel's RST system, part of the chipset and firmware built into a desktop computer. 7.1 List of operating systems supporting ZFS.6.2 Oracle Corporation, closed source, and forking (from 2010).6.1 Commercial and open source products.4.1 Limitations in preventing data corruption.3.7.3 Copy-on-write transactional model.3.7.2 Caching mechanisms: ARC, L2ARC, Transaction groups, ZIL, SLOG, Special VDEV.3.7.1 Storage devices, spares, and quotas.3.3.3 Resilvering and scrub (array syncing and integrity checking).3.3.2 ZFS's approach: RAID-Z and mirroring.
MACZFS VS ZEVO MAC OS X
OpenSolaris, illumos distributions, OpenIndiana, FreeBSD, Mac OS X Server 10.5 (only read-only support), NetBSD, Linux via third-party kernel module ("ZFS on Linux") or ZFS- FUSE, OSv Forked from OpenSolaris August 2010 12 years ago ( 2010-08)
Sun Microsystems ( acquired by Oracle Corporation in 2009) OpenZFS is widely used in Unix-like systems.
MACZFS VS ZEVO CODE
OpenZFS maintains and manages the core ZFS code, while organizations using ZFS maintain the specific code and validation processes required for ZFS to integrate within their systems. In 2013, OpenZFS was founded to coordinate the development of open source ZFS. In 2010, the illumos project forked a recent version of OpenSolaris, to continue its development as an open source project, including ZFS. During 2005 to 2010, the open source version of ZFS was ported to Linux, Mac OS X (continued as MacZFS) and FreeBSD.
MACZFS VS ZEVO LICENSE
Large parts of Solaris – including ZFS – were published under an open source license as OpenSolaris for around 5 years from 2005, before being placed under a closed source license when Oracle Corporation acquired Sun in 2009/2010. It began as part of the Sun Microsystems Solaris operating system in 2001. ZFS (previously: Zettabyte file system) combines a file system with a volume manager. For other uses, see ZFS (disambiguation).
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