And ZFS implements an improvement on RAID-5, RAID-Z, which uses parity, striping, and atomic operations to ensure reconstruction of corrupted data. Its theoretical limits are truly mind-boggling - 2128 bytes of storage, and 264 for everything else such as file systems, snapshots, directory entries, devices, and more. And in terms of scalability, Solaris ZFS is a 128-bit file system. Physical storage can be added to or removed from storage pools dynamically, without interrupting services, providing new levels of flexibility, availability, and performance. In Solaris ZFS, space is shared dynamically between multiple file systems from a single storage pool, and is parceled out of the pool as file systems request it.
The centerpiece of this new architecture is the concept of a virtual storage pool which decouples the file system from physical storage in the same way that virtual memory abstracts the address space from physical memory, allowing for much more efficient use of storage devices. Solaris ZFS offers a dramatic advance in data management with an innovative approach to data integrity, near zero administration, and a welcome integration of file system and volume management capabilities. Solaris ZFS is designed from the ground up to meet the emerging needs of a general purpose local file system that spans the desktop to the data center. INTRODUCTION Anyone who has ever lost important files, run out of space on a partition, spent weekends adding new storage to servers, tried to grow or shrink a file system, or experienced data corruption knows that there is room for improvement in file systems and volume managers. LIGHTWEIGHT FILE SYSTEM CREATION.19ĬACHE MANAGEMENT.19Ģ.11 ADAPTIVE ENDIANNESS.20ģ. SNAPSHOT AND CLONES.9ĮNCRYPTION.10ĭATA INTEGRITY.13ĭYNAMIC STRIPPING.16 STORAGE POOLS.7ĬOPY-ON-WRITE TRANSACTION MODEL.8 This means system administrators no longer need to monitor storage devices to see if they are causing I/O bottlenecks. And, as disks are added to the storage pool, Solaris ZFS immediately begins to allocate blocks from those devices, increasing effective bandwidth as each device is added. To eliminate bottlenecks and increase the speed of both reads and writes, ZFS stripes data across all available storage devices, balancing I/O and maximizing throughput. Additionally, Solaris ZFS implements intelligent prefetch, performing read ahead for sequential data streaming, and can adapt its read behavior on the fly for more complex access patterns.
The features of ZFS include support for high storage capacities, integration of the concepts of file system and volume management, snapshots and copy-on-write clones, continuous integrity checking and automatic repair, RAID-Z etc.
#Maczfs vs zevo license#
ZFS is a 128-bit file system, so it can address 18 billion billion times more data than the 64-bit systems ZFS is implemented as open-source filesystem, licensed under the Common Development and Distribution License (CDDL). A Seminar Report On ZETTABYTE FILE SYSTEM (ZFS)ĪBSTRACT ZFS (Zettabyte File System) is a file system designed by Sun Microsystems for the Solaris Operating System.
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