becomes unrecoverable, so assuming there are at least ``N`` servers, up to
``N``-``k`` servers can be offline without losing the file. So large ``N``/``k``
ratios are more reliable, and small ``N``/``k`` ratios use less disk space.
- Clearly, ``k`` must never be smaller than ``N``.
+ Clearly, ``k`` must never be greater than ``N``.
Large values of ``N`` will slow down upload operations slightly, since more
servers must be involved, and will slightly increase storage overhead due