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Blades and MDS600 cabling

chuckk281
Trusted Contributor

Blades and MDS600 cabling

Ramu had an MDS600 connection quesiton:

 

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Would like to know whether the attached cabling is supported in MDS600 with Blades. As per the MDS deployment guide, servers 1-8 are getting connected using SAS switch ports 1-4 and servers 9-16 are connected using SAS switch ports 5-6 (similarly from the second switch for redundancy).

 

With the proposed cabling, we will have port 1 from both SAS switches connected to each of the MDS600 disk drive drawers and similarly the port 5.

 

MDS600 deployment guide does not have this configuration, hence asking this question.

 

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Dave replied:

 

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From the P4800 install guide:

 

webpic35.jpg

 

or

 

webpic36.jpg

 

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Input from Chris:

 

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What Dave is saying is a single MDS drawer (side) should connect to ports 1-4 or ports 5-8 but not both.

Which means 35 disks can either connect to Blades 1-8 or Blades 9-16, but not both. One drawer can connect to SAS ports 1-4 on both SAS switches and be visible to blades 1-8. The other drawer can connect to ports 5-8 and be visible to Blades 9-16.

 

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And some info from Jan:

 

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You will find the cabling here:

http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01956983/c01956983.pdf

Chapter 12, page 90.

 

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Any questions or other suggestions?