ZFSA Solaris file system that uses storage pools to manage physical storage. The ZFS pooled storage model eliminates the concept of volumes and the associated problems of partitions, provisioning and stranded storage by enabling thousands of file systems to draw from a common storage pool, using only as much space as it actually needs. ZFS also uses RAID-Z, a data replication model that is similar to RAID-5 but uses variable stripe width to eliminate the RAID-5 write hole-that is stripe corruption due to loss of power between data and parity updates. All RAID-Z writes are full-stripe writes. There's no read-modify-write tax, no write hole, and no need for NVRAM in hardware.
According to the FAQ posted on OpenSolaris.org, originally, ZFS was an acronym for "Zettabyte File System." The largest SI prefix that the developers liked was 'zetta', and since ZFS is a 128-bit file system, the name was a reference to the fact that ZFS can store 256 quadrillion zettabytes (where each ZB is 270 bytes). Over time, ZFS gained a lot more features besides 128-bit capacity, such as rock-solid data integrity, easy administration, and a simplified model for managing your data.
ZFS is open-source software that is licensed under the Common Development and Distribution License (CDDL).
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
From cute electronic toys to VR gaming, here are 5 hot gifts to give to your special tech enthusiast this holiday season. Read More »What's Hot in Tech: AI Tops the List
Like everything in technology, AI touches on so many other trends, like self-driving cars and automation, and Big Data and the Internet of Things... Read More »DevOp's Role in Application Security
As organizations rush to release new applications, security appears to be getting short shrift. DevSecOps is a new approach that holds promise. Read More »
Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »Java Basics, Part 2
This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »The 7 Layers of the OSI Model
The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »