From: Timothy Lorenc (tim@load.com)
Date: Mon May 20 2002 - 17:32:06 EDT
Hello SunManagers;
>From the past/present Oracle has suggested a large number drives/LUNs (21 as
the ideal solution) for spreading out data, indexes, logs, rollback
segments, temp space, ... Working with my developers I have helped to size
this down to 7 drives/LUNs for the location of this information. We are
looking at Fiber Channel solutions, in particular Sun StorEdge T3(s).
My question concerns how many controllers would be ideal to meet this
solution? It would appear that seven controllers with the requirement for
this data to be striped/mirrored would best be met by using physically 14
controllers for 7 mirrored drives/LUNs. In the past I have always lived by
the philosophy of striping along a controller and mirroring across
controllers. I guess I am curious if this thinking is "old school" when
using directly attached Sun StorEdge T3 arrays (or any modern style fiber
channel solution)?
I am currently working with systems that utilize Sun StorEdge A1000 arrays
and I would like to move away from that technology. [40/Mbps DIFF UltraSCSI
vs. 100/Mbps Fiber Channel as one reason]. Does the performance and
resilience of fiber channel technology dismiss past hardware conventions due
to its inherent multipathing and full-duplexed speed capabilities.
BTW; any alterntive(s) [both array and controller HBA] that anyone would
suggest as comparable or better than the Sun StorEdge T3 solution?
Thanks for your time. Will summarize.
-- LOAD your email!
Timothy Lorenc USmail: Lorenc Advantage, Inc.
Consultant 6732 E. State Blvd.
PMB 304
Email: tim@load.com Fort Wayne, IN 46815
http://www.load.com
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