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From: mike 

On Mon, 18 Dec 2006 11:04:02 -0500, RobertB  wrote:

>In article ,
> mike  wrote:
>
>> On Sun, 17 Dec 2006 16:25:04 -0500, RobertB 
>> wrote:
>>
>> >In article ,
>> > mike  wrote:
>> >
>> >>
http://translate.google.com/translate?u=http%3A%2F%2Fmac4ever.com%2Fnews%
2F
>> >> 274
>> >>
85%2Fzettabyte_sur_leopard%2F&langpair=fr%7Cen&hl=en&ie=UTF-8&oe=UTF-8&pr
ev
>> >> =%2
>> >> Flanguage_tools
>> >>
>> >> ===
>> >> Parmis the few innovations of Leopard, one read these last months,
>> >> several rumours on the integration of a new filing system, the ZFS,
>> >> which presents a revolution in the field of the storage of data.
>> >>
>> >> This rumour seems to be confirmed, since one sees finally
apparaitre in
>> >> the utility of discs of Leopard, an option to create images and
>> >> partitions in this format. On the other hand, it is not
known yet if it
>> >> will be right another supported system, or if it has the
role to replace
>> >> the HFS+ for the disc system.
>> >>
>> >> ZFS amongst other things integrates functionalities of advanced
>> >> safeguards which could be used very well by Apple for
Time Machine for
>> >> example. This known as, it is a sympathetic innovation,
but that still
>> >> does not say to us what Steve wanted to hold secret signal…
>> >> ===
>> >>
>> >>  /m
>> >
>> >What's the source, so I can read it in the original?
>>
>> At the top of the google translated page is the link to the original.
>>
>>  /m
>
>OK. I found it. What's Zettabyte File System anyway?

Some more info:

http://loop.worldofapple.com/archives/2006/12/17/zfs-file-system-makes-it-to-ma
c-os-x-leopard/

===
Back in May of this year it was rumoured that Apple’s File System Development
Team had contacted Sun Microsystems to help in a translation of the Zettabyte
File System to Mac OS X. Zettabyte File System makes appearance in Mac OS X
10.5, Disk Utility

With the most recent Build of Mac OS X 10.5 Leopard, ZFS has appeared to have
finally made an appearance, as per the rumours.

Sun Microsystems describes ZFS as the “last word in File Systems,” the file
system is well known for being incredibly resilient to data failure, having
immense capacity and being the first 128-bit file system.

Lets look at ZFS’s ability to keep data safe, everything on ZFS is
“copy-on-write” meaning that the file system never overwrites live data and it
leaves no windows of vulnerability. Also on ZFS, everything is transactional
meaning that a file copy will either completely fail or be a complete success
not half and half leaving you with a mess to clean up.

Finally the most important feature of data integrity os check summing and
everything on ZFS is checksummed meaning zero data corruption.

The Zettabyte File system is also incredibly scalable adding value to users of
both server and home environments. ZFS has a data storage capacity of 256
quadrillion zettabytes and a maximum file size of 16 exabytes (that’s
17179869184 terabytes).

Overall ZFS offers the following key advantages:-

Pooled storage - No requirement for a volume manager when extra volumes added,
the volume is simply added to a pool creating a vdev (virtual device), a
collection of vdevs makes up a zpool, which in essence is the storage available
to the file system.

Snapshots - Read-only point in time of the file system

Clones - write-able copy of a snapshot

RAID-Z - Makes use of copy-on-write; rather than overwriting old data with new
data, it writes new data to a new location and then overwrites the pointer to
the old data

Detects and then corrects data corruption

Incredibly fast due to intelligent pre-fetching, and dynamic striping....
===

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