[115038] in North American Network Operators' Group
Re: Facility wide DR/Continuity
daemon@ATHENA.MIT.EDU (Roland Dobbins)
Wed Jun 3 12:58:59 2009
From: Roland Dobbins <rdobbins@arbor.net>
To: NANOG list <nanog@nanog.org>
In-Reply-To: <688419.31810.qm@web24714.mail.ird.yahoo.com>
Date: Wed, 3 Jun 2009 23:59:12 +0700
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Jun 3, 2009, at 11:15 PM, gb10hkzo-nanog@yahoo.co.uk wrote:
> For example, consider the licensing and hardware costs involved in
> running something like Oracle Database in active/active mode (in a
> topology that is supported by Oracle Tech Support).
In my experience, it's no more expensive in terms of hardware/software
licensing costs to run active/active, and actually less in terms of
opex costs due to issues raised previously in this thread, as well as
a host of others.
Note that running active/active doesn't necessarily mean doing
something like running a clustered database back-end, utilizing vendor-
specific HA solutions. It can be done via a combination of caching,
sharding, distributed indexing, et. al. - i.e., via application
structuring and logic.
-----------------------------------------------------------------------
Roland Dobbins <rdobbins@arbor.net> // <http://www.arbornetworks.com>
Unfortunately, inefficiency scales really well.
-- Kevin Lawton
