Re: File system compression, not at the block layer

[Horst von Brand]

Timothy Miller <miller@xxxxxxxxxxxxxx> said:

[...]

> In a drive with multiple platters and therefore multiple heads, you 
> could read/write from all heads simultaneously.  Or is that how they 
> already do it?

No. Current disks have bad blocks (way too small on disk to be able to
ensure 100% OK), and they are remapped by the drive firmware to spare
cilinders. To have the exact same blocks broken on each surface would be a
real lottery.
-- 
Dr. Horst H. von Brand                   User #22616 counter.li.org
Departamento de Informatica                     Fono: +56 32 654431
Universidad Tecnica Federico Santa Maria              +56 32 654239
Casilla 110-V, Valparaiso, Chile                Fax:  +56 32 797513
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