Re: Linux NFS vs NetApp

[Bernd Eckenfels]

In article <16868.19707.857446.864762@xxxxxxxxxxxxxxx> you wrote:
>> NetApp's WAFL only journals metadata in NVRAM ...
>> (one of the primary reasons its called WAFL is that the data-write only 
>> happens once..).

> That may be, though it doesn't fit with my (admittedly limitted)
> understanding of WAFL.

Yes, AFAIK the NVRAM is used for the RAID-4, independend of WAFL and  as a write-back cache. 

However since also the read performance of Linux NFS is bad (at least not
very well selftuning) the Hardware is not really the reason for the fast NFS
implementation.

Greetings
Bernd
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