Re: Options for wide-area database?

From: Ernest Siu <ernestsiu_at_yahoo.com>
Date: 18 Feb 2004 14:20:00 -0800
Message-ID: <2833144d.0402181420.19c30e89@posting.google.com>

> I've done a guite deep research in this area and more than 15
> kilometers is still a no-no for RAC. I've asked Oracle for oficial
> statement, I've asked independend experts, going futher with distance
> posses too much risk in enteprise environment. In RAC low latencies
> are the key for success, bandwidth is no problem, but latencies
> definitely are.

This is getting interesting...

what is your testing/experimenting experience like? going beyond 15km results in magnitude lower performance?
how many nodes were you considering?
do you find the 'trouble' being private network meta-data exchange?
when you say 'too much risk', are you talking about performance? in particular, read or write?
for your research, what is your proposed storage architecture like? SAN? NAS?
round trip latency is around 1ms per 100km - what is good latency to you?
any specific tools/traffic-generator you use?

Thanks for your input!!

Ernest Received on Wed Feb 18 2004 - 16:20:00 CST