klittlejohn1
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Adding Storage Enclosure to IBM DS4700
We just bought a new storage enclosure for our IBM DS4700 SAN. With the new enclosure, that will give us 5 storage enclosures total. We are setup with redundant paths. My question is how do I connect the fiber to the new enclosure. I have looked at IBM documents and see how to cable up to 4 enclosures and then it jumps to 6.
I just need some guidance to make sure that it is cabled correctly and no problems. Thanks in advance for the help.
I just need some guidance to make sure that it is cabled correctly and no problems. Thanks in advance for the help.
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Assuming it's a supported configuration (which it should be, but I am not IBM, so I can't guarantee it)...
I'd set it up with the left side configured as shown for the three-box side in a six-box config, and the right side configured for the two-box illustration in the four-box illustration.
But since the sides are unequal, it may not be supported. And if it's not supported, it may or may not work. You'll Know If It Doesn't Work.
I'd set it up with the left side configured as shown for the three-box side in a six-box config, and the right side configured for the two-box illustration in the four-box illustration.
But since the sides are unequal, it may not be supported. And if it's not supported, it may or may not work. You'll Know If It Doesn't Work.
Not sure what you mean by left & right side, as there are A/B ports & left/right enclosures. maybe just mark really dark what you want to do so I can be sure and repost the pdf
ASKER
I will mark the lines tonight with a dark marker and repost. Thanks guys
ASKER
OK. I put an X on the enclosure that will not be in use. I drew a line from port 2 channel 2 to go to the 5th enclosure in 1B. I have a line going from port 1 channel 2 to go to the 4th enclosure 1B. I made marks on the lines that will not exist. Hopefully this helps. My apologies if it is not clear. Thanks again
SCAN0002.JPG
SCAN0002.JPG
I wouldn't do that... if it's what I think it is.
You want to keep the cabling exactly the same as is shown in your illustration, except that the cable that goes from 2 on the controller right side goes to enclosure 5 bottom port. I don't think that anything else has to change, except that you won't have a cable going from 5 to 7, either up or down.
If you try to do it the way you show, you lose controller redundancy -- each controller only connects to half the shelves.
You want to keep the cabling exactly the same as is shown in your illustration, except that the cable that goes from 2 on the controller right side goes to enclosure 5 bottom port. I don't think that anything else has to change, except that you won't have a cable going from 5 to 7, either up or down.
If you try to do it the way you show, you lose controller redundancy -- each controller only connects to half the shelves.
ASKER
OK. So 2 on controller right side to enclosure 5 B port. What about 1 on controller right side to 4 B port? Does that look good?
I'm not in the group that handles our DS4700, but I will take a look at how our is cabled tomorrow. We have 5 expansion units.
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ASKER
Sorry for the delay. I got it working without problems. Thanks again for the help.
ASKER
i am going to attach the diagrams that we are following. The first diagram with 4 enclosures shows how we have everything connected now. The second diagram with the 6 enclosures is what I am going to follow with the exception of changing the connections for port 2 channel 2 going to the fifth enclosure in 1B. thanks again
SAN.pdf