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July 14th, 2023 15:00
NVMe Support for R740xd backplane
Hello. I have a 2018-era R740xd with the 24-bay SFF backplane (part no. 0P1MJ3). I can't find any information for that part number, and some of the documentation is confusing. Does that backplane support *any* NVMe drives? If so, how many? If not, can that backplane be replaced with another backplane that supports NVMe drives, or are there other chassis/cabling issues that have to resolved (other than the addition of PCIe expander cards)? If the backplane can be upgraded, can you give the part number for that backplane?
Thanks so much
S
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DELL-Charles R
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July 17th, 2023 10:00
Hello lsputman,
The significant fiddling is why field changing of backplane configuration is not typically supported.
We don't have kits and would have to piece part any changes together.
The link Young provided show the two configuration that indicate NVMe support:
Figure 15.
Figure 16.
DELL-Young E
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July 16th, 2023 19:00
Hello thanks for choosing Dell.
https://dell.to/3NWySzN
Figure 15. Cable routing – 24 x 2.5 inch NVMe drive backplane
You need a card for NVME as well as the cable connected as you can see from the link above. Hope this helps.
lsputman
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July 17th, 2023 07:00
Thank you for the response. The diagram you referenced shows connections for the NVMe cards to the backplane expander. I don't see those connections on my backplane expander, which seems to connect only to a mini PERC.
DELL-Charles R
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July 17th, 2023 10:00
Hello lsputman,
This should be the backplane:
Part #:PC8TD
Part Desc.:ASSY,CRD,BP,24X2.5,N,R740XD,V2
Assembly Card Backplane, 24X2.5, NVMe, V2
I attached an image.
1 Attachment
dafcf431-5f98-40b4-83b8-fbee73b19f3b-2320524199.jpg
lsputman
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July 17th, 2023 10:00
Thank you, Charles.
My current configuration looks like Figure 13 in the link that @DELL-Young E provided above. After looking through the documentation some more, it looks like it would involve some significant fiddling to get to the 24x NVME configuration (different backplane + cabling, different riser configuration in the back since there's rear storage there now). I guess the main question is whether the currently installed backplane supports *any* NVMe drives (with the addition of an expander card on the one open x16 slot).
Appreciate the help!
lsputman
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July 17th, 2023 12:00
Thanks--appreciate the help. SAS or SATA it is!