Re: Zoning in ESS(2105-800) world

Although we have several DS4000's & McData Switches/Directors,
I'd assume the concepts are the same...

So, I guess it would depend on which catastrophe you were planning.
-Bad Switch Port - Host
-Bad Switch Port - Interconnect (ISL)
-Bad Switch
-Bad HBA
-Bad Controller

But, I assume the Best-Practice would be based on the following items.
-Shortest hops per zone. (K-I-S-S principle)
-most likely failure: probably the GBIC's in the switch.

(I'm assuming you're running AIX?)

So, I'd say with AIX-RDAC-Failover and then only 2 zones for server-to-disk,
I'd go with zoning by following your wiring:

Zone 1: Host HBA 1 -> Switch 1 -> ESS-HA 1
Zone 2: Host HBA 2 -> Switch 2 -> ESS-HA 2

NOT...

Zone 1: Host HBA 1 -> Switch 1 -> Switch 2 -> ESS-HA 2
Zone 2: Host HBA 2 -> Switch 2 -> Switch 1 -> ESS-HA 1

Does that make sense what I'm trying to describe without a Visio?

Now, with "true" RDAC you can create several zones beyond the basic two...

Zone 1: Host HBA 1 -> Switch 1 -> ESS-HA 1
Zone 2: Host HBA 2 -> Switch 2 -> ESS-HA 2
Zone 3: Host HBA 1 -> Switch 2 -> ESS-HA 2
Zone 4: Host HBA 2 -> Switch 1 -> ESS-HA 1

That may be overkill, but we've had an instance or two where it has saved on
on a couple of windows servers...

Regards,
Troy

Troy Barnhart, Sr. Systems Programmer
tbarnhart@xxxxxxxx
Regional Health, Inc.
353 Fairmont Boulevard
Rapid City, South Dakota 57701
PH: 605-716-8352 / FAX: 605-716-8302
______________________________

From: Miller, Dave (I.S.) [mailto:Dave.Miller@xxxxxxx]
Sent: Friday, November 03, 2006 10:41 AM
To: aix-l@xxxxxxxxxxxxx
Subject: Zoning in ESS(2105-800) world

I know this is somewhat off topic, if there is a better place
to ask the question please advise.

For those of you with pSeries boxes and an ESS attached to a
SAN switch can you tell me how you zone between the pSeries
HBA and the ESS?

I have one Host Adapter in each bay of the ESS. HAs in bays 1 and 3
are attached to Switch 1, and HAs in bays 2 and 4 are attached to Switch 2.

Switch 1 and 2 each have a connection from an HBA in the Server...

So does it matter which ESS-HA is in the zone with the Server HBA?
i.e. does it need to zones, one for Each HA, or ???
what is the decision process?

Thanks.
________________________________

***Note: The information contained in this message, including any attachments, may be privileged, confidential, and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the Sender immediately by a "reply to sender only" message and destroy all electronic or paper copies of the communication, including any attachments.

Relevant Pages

  • Re: 3-part 3-way Switch Circuit Design
    ... in three separate lighting zones so that the room can be lit according ... electrician brain around it. ... That would be a 3PDT switch. ...
    (alt.home.repair)
  • Re: 3-part 3-way Switch Circuit Design
    ... in three separate lighting zones so that the room can be lit according ... electrician brain around it. ... That would be a 3PDT switch. ...
    (alt.home.repair)
  • Re: 3-part 3-way Switch Circuit Design
    ... how to approach the lighting. ... in three separate lighting zones so that the room can be lit according ... In my switch box, I'd also like to have one master switch that turns ...
    (alt.home.repair)
  • Re: 3-part 3-way Switch Circuit Design
    ... in three separate lighting zones so that the room can be lit according ... Flipping the master again would turn ... That would be a 3PDT switch. ...
    (alt.home.repair)
  • Re: 3-part 3-way Switch Circuit Design
    ... that circuit work, and like I said to mm, I was sure I'd done a master ... in three separate lighting zones so that the room can be lit according ... In my switch box, I'd also like to have one master switch that turns ...
    (alt.home.repair)