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IBM DS4800 stores disk port connects line and give typical examples
From;    Author:Stand originally
One.IBM DS4800 stores disk port connects a line

IBM DS4800 memory can join most 16 EXP100 (SATA) or EXP710 (FC) . It supports patulous ark of FC and SATA in the round
Mix even, make the user has the biggest flexibility thereby. Generally speaking, when enlarge allows DS4800, best a patulous ark is so balanced that a patulous ark distributing in 4 Loop Pairs. This will be OK use the biggest Drive-side bandwidth. The DS4800 of a the biggest configuration should have 4 patulous ark to be on every Drive-side Loop Pair. Graph - 1 designation a DS4800 contains 16 EXP710s.

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Graph - the DS4800 of a 1 the biggest configuration contains 16 EXP710s

Although we are recommended,distributing patulous ark to 4 Loops Pairs(as far as possible every Loop Pair expands 4 times at most ark) , but we still support a Loop Pair expands 8 times at most ark. This is equal to say compatible the configuration principle of DS4500 (support 2 Loop Pairs) at most.

Attention: Besides the demand that there are 8 patulous cabinets at most in a Drive Loop Pair, another limitation condition is to share two Drive Loop Pairs of a Drive Channel Group to be engraved at most can join 8 patulous cabinet. This means Loop Pair #1/loop Pair #2
Combination cannot be had together exceed 8 EXP patulous ark at most. So, if you put 8 EXP,patulous ark is in Loop Pair #1, criterion you cannot be put any EXP expands ark is in Loop Pair #2. Similar regulation also applies to Loop Pair #3 and Loop Pair #4. If you have 6 EXP,patulous ark is in Loop Pair #3, criterion you cannot put 2 over EXP to expand ark is in Loop Pair #4.

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Graph - the 2 DS4500 that deserve to fall completely and EXP710s

If you point to two Drive-side Loop Pairs that use DS4800 only, is not 4 all Drive-side Loop Pairs,
Had better use the following Loop Pairs: Controller A, port 4/Controller B, port 1 (loop Pair
#1); and Controller A, port 2/Controller B, port 3 (loop Pair #3) .
This will distributing 2 Loop Pairs to 2 Drive Channel Group Pairs. And, because they use detached DriveChannel Groups, they also do not need to must work to fall in same rate. They are OK the job is in or 2 Gbps or 4 Gbps mode fall.

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