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DMX, DMX2: Model numbers, basic differences, 3 Phase, Single Phase, Drive counts, Drives per loop


I have had many engineers and customers ask me about the basic differences on DMX and DMX2 machines. Based on some data I had put together a while back, here are the major differences on a DMXxxxx vs a DMXxxxx-P2 vs a DMXxxxx-M2-3, etc. 

The number of drives per loop: the lesser the drives on a single loop the better the performance. There are two different versions of drives per loop: one being the 9 drives per loop and the other one being 18 drives per loop. 

Following are all 18 drives per loop

 

DMX1000:   

Low Performance, 
1st Generation DMX, 
18 drives per loop, 
Single Bay with Single Phase power, 
144 drives max. 

 

DMX1000-M2:           
High Performance, 
2nd Generation DMX, 
18 drives per loop, 
Single Bay with Single Phase power, 
144 drives max.

 

DMX2000:                 
Low Performance, 
1st Generation DMX, 
18 drives per loop, 
Dual Bay with Single Phase power, 
288 drives max. 

 

DMX2000-M2:           
High Performance, 
2nd Generation DMX, 
18 drives per loop, 
Dual Bay with Single Phase power, 
288 drives max.

 

DMX2000-M2-3:        
High Performance, 
2nd Generation DMX, 
18 drives per loop, 
Dual Bay with Three Phase power, 
288 drives max. 

 

DMX3000-3:              
Low Performance,  
1st Generation DMX, 
18 drives per loop, 
Triple Bay with Three Phase power, 
576 drives max . 

 

DMX3000-M2-3:        
High Performance, 
2nd Generation DMX, 
18 drives per loop, 
Triple Bay with Three Phase power, 
576 drives max.

 

Following are all 9 drives per loop

 

DMX1000-P:              
Ultra Performance, 1st Generation DMX, 
9 drives per loop, 
Single Bay with Single Phase power, 
144 drives max. 

 

DMX1000-P2:            
Ultra Performance, 
2nd Generation DMX, 
9 drives per loop, 
Single Bay with Single Phase power, 
144 drives max.

 

DMX2000-P:              
Ultra Performance, 
1st Generation DMX, 
9 drives per loop, 
Dual Bay with Single Phase power, 
288 drives max.

 

DMX2000-P2:            
Ultra Performance, 
2nd Generation DMX, 
9 drives per loop, 
Dual Bay with Single Phase power, 
288 drives max. 

 

DMX2000-P2-3:         
Ultra Performance, 
2nd Generation DMX, 
9 drives per loop, 
Dual Bay with Three Phase power, 
288 drives max. 

 

Machines are categorized as a DMX and DMX2, The ones above with a P2 or M2 are DMX2. 

The new generation of DMX machine’s now available in the market are: DMX-3 and DMX-4. This blog article only talks about the DMX and the DMX2’s. 

 

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  • prupesh24

    Very helpful doc….keep up the good work Devang

  • http://storagenerve.com storagenerve

    Thanks, if any specific storage articles might help you or your team, please feel free to let me know, i can try to write about those…

  • http://storagenerve.com storagenerve

    Thanks, if any specific storage articles might help you or your team, please feel free to let me know, i can try to write about those…

  • Mumshad

    What is the basic difference between DMX and DMX2? in the above given points, almost everything is the same except for Performance. How do you get better performance with DMX2 when you have same 18 drives per loop, when compared to DMX? What is the basic architectural difference that is enabling high performance on DMX2 when compared to DMX?

  • http://storagenerve.com storagenerve

    Hello,

    The basic difference between the DMX and DMX2 is only the Director upgrade which have the faster CPU's. You can run both the DMX and DMX2 on 5670 and 5671 versions of microcode. Architecture between both the DMX and DMX2 is same.

    A DMX2 with 18 drive loop and a DMX with 18 drive loop will have higher processing power based on the CPU speeds. The interface speed on the channel cards (FA's, etc) is 2GB on both the DMX and DMX2.

    To your last question….its the CPU.

  • Sanjit

    Thanks a lot for these valuable information.

  • Sanjit

    Thanks a lot for these valuable information.