OT - was Hammer or ZFS based backup, encryption

Bill Hacker wbh at conducive.org
Sun Feb 22 12:53:35 PST 2009


Jeremy Chadwick wrote:

*snip*

The problem I was attempting to describe: all pool members must be the
same size, otherwise all members are considered to be equal to the size
of the smallest.  In English: you cannot "mix-and-match" different sized
disks.
*TILT*

C'mon guys - that has nuthin to do with ZFS or any other RAID [1].

Grocery-store rithmetic says you can't put 2 liters of wine into a 
one-liter bottle.

(though there IS a MIL-SPEC exercise called a 'blivet' that tries to get 
ten liters of sh** into a one-liter container .. ...with predictable 
mess to be dealt with, fecal matter having rather poor compression 
algorithms)

;-)

Bill

[1] Though some 'grid farm' and cousins attack the problem differently - 
sort of a JBOD confederation with (some of) the contents replicated one 
or more times and in one or more places - wherever there is space, or 
least-usage, or greatest 'quality', or most eager 'volunteer', or ....

Whole 'nuther subject, those.

And neither ZFS not HAMMER is of that family.

Not *yet*





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