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September 21st, 2023 12:02

Software Raid for NVMe with Front PERC H755 Rear Load (for 2.5" x24 SAS/SATA chassis)

Hello,

We order one server to our customer with Front PERC H755 Rear Load (for 2.5" x24 SAS/SATA chassis) 6*2.4TB 10K and 4* 960GB Data Center NVMe Read Intensive AG Drive U2 Gen4. Now the challenge how to configure raid for NVMe as came to know that PERC 755 with SAS/SATA does not support NVMe .  Please support here 

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September 22nd, 2023 13:33

@DELL-Joey C​ Thank you very much!

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September 21st, 2023 18:32

Ilyasahsan,
 
Would you clarify the model server you are working with, as it will be platform specific? Also, the owners manuals will have cabling diagrams of supported configurations, would you let me know which one looks to be the way yours is cabled?
 
Let me know and we can go from there.
 
 

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September 22nd, 2023 04:44

@DELL-Chris H​ its R750 and server is already delivered to End customer site. and all cabling and configuration they will do by them self. below some HL spec of the server.

  1. 2.5" Chassis with up to 24 SAS/SATA Drives including 8 Universal Slots (NVMe Direct), 2 CPU
  2. SAS/SATA/NVMe Capable Backplane
  3. Front PERC H755 Rear Load (for 2.5" x24 SAS/SATA chassis)

I believe H755 Adapter supported SAS/SATA and NVMe but above PERC H755 not. now customer can use the 4* 960GB Data Center NVMe Read Intensive. does he configure software for NVME ?

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22-09-2023 09:15 AM

Hi,

 

Referring to the guide, page 5 and 11: https://dell.to/46ghzlz, the customer should change the settings in NVMe settings to RAID mode if they want to use the disk as RAID. And the NVMe drive should be managed by the PERC S150. 

DELL-Joey C

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September 25th, 2023 05:55

@DELL-Joey C​  Hi Joey, when we configured the NVMe raid from Bios the first raid group with SAS/SATA drive not diaper  

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25-09-2023 09:13 AM

Hello,

what you mean with "not diaper" ? How can I help you?

Thanks

DELL- Marco B

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September 26th, 2023 09:51

@DELL-Marco B​ Hi Marco, sorry for my type mistake.

Actually based on the  shared  links & steps we have applied NVMe Raid with S150 raid built but at the time of OS installation there is no RAID disk showed there are individual disks showing no RAID.

Attached are screenshots of the deployment please check and and support here. 

 

(edited)

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3.3K Posts

26-09-2023 12:40 PM

Hello,

please check here

Dell PowerEdge RAID Controller S150 User’s Guide | Dell France

Did you select  Convert to RAID Capable Disk in the controller management option?

Thanks

DELL- Marco B

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September 26th, 2023 12:59

@DELL-Marco B​ Yes selected the same as described in the above links. attaching the screen shots 

(edited)

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26-09-2023 01:42 PM

Hello,

as per our technical support mail sent on the 13/09 the S150 won't be able to do the RAID configuration through VMware.

Also PERC H755 front won't be able to create RAID with NVMe.

I hope that this information can help you.

Thanks

DELL- Marco B

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September 26th, 2023 13:48

@DELL-Marco B​ Hi Marco, it is not through VMware . RAID with NVMe require for window operating system. 

(edited)

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3.3K Posts

26-09-2023 01:52 PM

Which version of Windows operative system are you installing?

You can first set NVMe mode in BIOS

Dell PowerEdge RAID Controller S150 User’s Guide | Dell US

 

And for windows installation, please can you list all the steps you are using to install?

Thanks

DELL- Marco B

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September 27th, 2023 05:15

@DELL-Marco B​  Hi Marco, If customer want to use VMware than what he need to do the use the NVMe and SAS/SATA drive . the server is delivered with below specification

  1. Chassis with up to 24x2.5" Drives
  2. SAS/SATA/NVMe Capable Backplane
  3. 2.5" Chassis with up to 24 SAS/SATA Drives including 8 Universal Slots (NVMe Direct), 2 CPU
  4. C7, Unconfigured RAID for HDDs or SSDs (Mixed Drive Types Allowed)
  5. Front PERC H755 Rear Load (for 2.5" x24 SAS/SATA chassis)

 

Internal disks

6* 2.4TB 10K RPM SAS ISE 12Gbps 512e 2.5in Hot-plug Hard Drive

4* 960GB Data Center NVMe Read Intensive AG Drive U2 Gen4 with carrier

How they can use the 4 NVMe drive. Can they configure the sotware raid for NVMe ? pleae guide.

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September 27th, 2023 05:43

Hi, 

I can see there are two Raid Controller are showing Dell PERC H755 Front and PERC S150.

which one they can use for NVMe Raid. 

(edited)

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3K Posts

27-09-2023 08:07 AM

Hi,

 

The reason that during the installation of Windows as a VM resides in VMWare, the installation is not able to detect the RAID is because VMWare do not support PERC S150. https://dell.to/3rmt9ML

DELL-Joey C

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September 27th, 2023 08:25

@DELL-Joey C​ Hi Joey, thank for the links. confusion is still there. my concern we have ordered the server with below spec 

Chassis with up to 24x2.5" Drives
 
SAS/SATA/NVMe Capable Backplane
2.5" Chassis with up to 24 SAS/SATA Drives including 8 Universal Slots (NVMe Direct), 2 CPU
 
C7, Unconfigured RAID for HDDs or SSDs (Mixed Drive Types Allowed)
Front PERC H755 Rear Load (for 2.5" x24 SAS/SATA chassis)

Internal disks
6* 2.4TB 10K RPM SAS ISE 12Gbps 512e 2.5in Hot-plug Hard Drive
4* 960GB Data Center NVMe Read Intensive AG Drive U2 Gen4 with carrier

Now customer wants to configure two raid one for NVMe * 4 drive and one for SAS * 6 drive. what he need to do . is there any HW need to replace or what . Please support on this issue. 

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September 27th, 2023 08:37

the main OS will be VMware 

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27-09-2023 09:30 AM

Hi,

 

Based on the service tag, there was a call made to the support and the support agent has informed that they will need to replace the controller card. As the OS, VMWare is unable to support PERC S150 to install Windows OS. 

DELL-Joey C

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September 27th, 2023 10:32

@DELL-Joey C​ Thank you for your feedback, but really it surprising us that we order the system with complete solution mean OS VMware vSphere 7 Enterprise Plus for 1 CPU, up to 32 cores, 1YR VMware 2. and there was no error/warning message while configuring the specs in OSC. Appreciated if you would guide that which card need to replace and how it will be processor. will this be as spare replacement  or new order.

(edited)

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27-09-2023 01:11 PM

No sorry we cannot make presales support, you have to contact a presales team of a reseller for that.

Thanks

DELL- Marco B

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September 28th, 2023 13:06

@DELL-Marco B​ Thank you Marco for your support till now. 

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