Hi ,

My system is a datawarehouse on linux itanium 64 , emc raid10 , fibre
channel .
(oracle rac)

When i monitor the system , by using iostat , vmstat , etc. , most of
the time the   read bytes / sec value changes between 10MB and 100MB.
Is this the maximum that i can get from emc? Can the system read more
? (for instance 800MB per sec) Last weekend i made a copy of file
systems by using dd , the maximum value that i get was 100MB per
second.

The emc system is a shared environment , there exist other companies
who share the cache and channel .

I asked the application service provider to supply us an emc
monitoring utility which allows me to see what happens at emc site. I
want to see the throuhput of emc but i was told that such a monitoring
tools exist on emc but they are not supported on my system (linux
itanium). How can i monitor the mc site?

Kind Regards,
hope

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hopehope_123@yahoo.com (utkanbir) wrote in
news:f6c90ebe.0406162245.2af391d5@posting.google.com:
> My system is a datawarehouse on linux itanium 64 , emc raid10 , fibre
> channel .
> (oracle rac)

Which EMC system? What kind of connections to it?

> When i monitor the system , by using iostat , vmstat , etc. , most of
> the time the   read bytes / sec value changes between 10MB and 100MB.
> Is this the maximum that i can get from emc? Can the system read more
> ? (for instance 800MB per sec) Last weekend i made a copy of file
> systems by using dd , the maximum value that i get was 100MB per
> second.

100 MB/s would be the top speed of a single 1gig FC link. Is this your
bottleneck?

> I asked the application service provider to supply us an emc
> monitoring utility which allows me to see what happens at emc site. I
> want to see the throuhput of emc but i was told that such a monitoring
> tools exist on emc but they are not supported on my system (linux
> itanium). How can i monitor the mc site?

Work Load Analyzer (part of ECC, i believe) can do a lot of stuff on
Symmetrix. Navisphere Analyzer can do a lot on Clariions.

--
/Jesper Monsted

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