FW: 20TB Storage System
Poul-Henning Kamp
phk at phk.freebsd.dk
Tue Sep 2 13:12:32 PDT 2003
In message <ILENIMHFIPIBHJLCDEHKEEMIDCAA.max.clark at media.net>, "Max Clark" writ
es:
>I know adding ccd/vinum to the equation will lower my IO throughput, but the
>question is... if I have an external hardware shelf with 3.5TB (16 250GB
>drives w/ Raid 5 from hardware) and I put a Raid 0 stripe across 3 of these
>shelves what would my expected loss of IO be?
The loss will mostly be from latency, but how much is impossible to
tell I think.
The statistics of this, even with my trusty old Erlang table would
still be too uncertain to be of any value.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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