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08-17-2011 06:00 AM
08-17-2011 06:00 AM
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:
or
****************
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?