jlsue
Guest
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 Posted:
Mon Nov 08, 2004 8:05 pm Post subject:
Re: HA on EVA |
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On 4 Nov 2004 19:15:06 -0800, wanni_chua@hotmail.com (Wanni) wrote:
| Quote: | Can someone explain to me,
Why need to have 8 trays on EVA to archive redundancy.
And what's the redundancy we talking abotu here ?
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There are many levels of redundancy. In an EVA, f you have only have, say,
two shelves/trays and attempt to do VRAID-5, then you really don't have
redundancy because there is no way to eliminate the bus/tray from taking
out multiple spindles in a VRAID-5 set. VRAID-1 between the two would be
the only way to achieve redundancy.
Having 8 gives the best performance and redundancy. If availability is
important, then it's HP's recommendation to not implement fewer than this.
As you move between 2 and 8, there are different areas where redundancy
isn't achieved.
I believe there are storage & best practices white papers on the HP site
that document the configuration issues.
--- jls
The preceding message was personal opinion only.
I do not speak in any authorized capacity for anyone,
and certainly not my employer.
(get rid of the xxxz in my address to e-mail) |
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