26 December 2006
by Magno Urbano
Earlier this year, Eric Schmidt, CEO of Google, a man with several friends in Sun Microsystems, was invited join Apple’s board of directors.
As CEO do Google and as a member of Apple’s board, Eric Schmidt started drawing some alliances between Apple, Gogle and companies like Sun Microsystems, in a action to bomb füher’s headquarter in Redmond, Virginia*.
The first product of this alliance is about to see the Sun — as soon as Mac OS X Leopard is released. It is a new file system called Zettabyte File System (ZFS), created by Sun, as a next century file system to deal with huge amount of data in the simplest way possible.
ZFS is a 128-bit file system with the following characteristics:
- the concept of partition is terminated. ZFS uses the concept of pool. A pool is a group of devices that share the same characteristics. A new disk can be added or removed to the pool, easily;
- a new method called copy-on-write is introduced. Using this method, a file is never overwritten when its contents change. Instead, a new version of the file is written on another place and then, the original file is erased;
- to mantain data integrity and to bring data corruption to zero a 256-bit checksum method is used on all operations;
- all data stored is always compressed. All occur in real-time, on-the-fly;
- pools or files can contain up to 16 exabytes (260 bytes)**;
- a clone of a pool can be created in seconds. A pool and its clone share the same data they have in common. When one is modified the other stores the difference;
- to increase disk storage efficiency, disk clusters’ size is now variable — more data can be stored on disks;
- the load over a pool is always distributed between its members;
ZFS will be the next big hit of Apple!
* by coincidence, the sape place where Microsoft’s headquarter is located.
** It will be necessary to write 1000 files per second during 9,000 years to reach that number!
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