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How to determine number of engines in vmax
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In SYM we can figure out how many drives(Drive Bays) or host connections will be supported looking at the number of Directors availble. With VMAX the Enigines(Single , Dual) concept came.
How can i determin how many engines my VMAX currently have? How many more it can support if needed? Is there a relation between the number of engnies & directors in VMAX?
Quincy561
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April 25th, 2010 04:00
Each engine has two director board installed. Each engine has 8 backend loops for drive connections that can go up to 5 drive bays deep in some configurations. If you add more than 2 drive bays to the first four engines, you cannot add more than 4 engines to the configuration (it is then a deep daisy chained config). The normal performance configurations allow two drive bays on the 1st four engines, and three drive bays on the 2nd four engines. Each director board has two IO modules that can be selected by the customer. For example you could install all fiber channel IO modules and get 16 FA ports per engine.
mcowger1
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April 25th, 2010 10:00
Yup - short version, just count # of frontend directors and divide by 2.
SKT2
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April 25th, 2010 22:00
Did u eman DB-1[AB} and DB-2[AB} on first 4 engines and DB-3[AB}, DB-4{AB], DB-5[AB} on second 4 engines?
MikeMac1
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April 27th, 2010 07:00
On a V-Max the pairing is done a little differently. If you have one engine, your directors would be 8 and 9. If you add a second engine, that would be on directors 7 and 10. Third engine would be directors 6 and 11 and then so on. Each director contains 8 processors, 4 are backend which connect to the drives (processors A thru D) and the other 4 are for the frontend which connect to hosts/RDF (processors E thru H).
nicktech1
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March 30th, 2011 07:00
Run the following command:
symcfg list -sid xxx -da all
This will give you a list of all back end disk directors. The slot column will show you the director id of each director. From this you can determine the number of engines.
Directors 1 & 2 are in Engine 1
Directors 3 & 4 are in Engine 2
Directors 5 & 6 are in Engine 3
Directors 7 & 8 are in Engine 4
Directors 9 & 10 are in Engine 5
Directors 11 & 12 are in Engine 6
Directors 13 & 14 are in Engine 7
Directors 15 & 16 are in Engine 8
Hope that doesnt confuse it more...