[nylug-talk] Recommendations for encrypted tape drive(s)?

[Ruben Safir]

On Wed, Mar 05, 2008 at 05:26:14AM -0500, Alex Pilosov wrote:
> On Tue, 4 Mar 2008, Luis Murillo wrote:
> 
> > Yes, you would need some fiber setup with multiple drives and also keep
> > in mind that the place where you keep your data that you want to backup
> > must also provide the data as fast as possible...for example over the
> > network on a 100MBit network don't expect to reach 163MBps speed on one
> > drive...
> Really bad things happen when you confise bits and bytes.
> 
> Tape drive bandwidth is quoted in bytes per second. LTO speed is 120MB/s.
> Big B. Bytes. The "163MB/s"  figure is "expected speed with compression" 
> 
> Network performance is quoted in bites per second, or Mbps. Little b.
> 
> Thus, 100Mbps network will only sustain 12MB/s write speed. Even single GE 
> is not enough to sustain LTO-4 performance. 


bites, kilobits and megabits are also all not equal in scale.
a kilobyte 1024 bits and a megabyte is is even more distorted.

Ruben

> 
> fired.
> 
> -alex
> 
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