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decodingilyas
Fanfold Paper
Posts: 4
Registered: ‎06-21-2019
Location: OM
Views: 374
Message 1 of 7

Unable to see system drive while installing Nutanix CE on Server SR650

Hi,

 

We are in process to install Nutatanix CE on Lenovo SR650. However, unable to see system drive during installation.

 

I have following Raid configuration to each disk.

 

Raid 0 : 1 SSD Drive 250 GB

Raid 0 : 2 HDD Drive 600 GB  

 

Kindly let us know, where we need do configuration to support Nutanix CE. 

 

Regards,

Ilyas Ahmed 

cterek
WWAN
Posts: 221
Registered: ‎04-20-2015
Location: CA
Views: 317
Message 2 of 7

Re: Unable to see system drive while installing Nutanix CE on Server SR650

You need to set your controller in passthru mode, no RAID function; needs to act like an HBA not a raid controller,.

Schlabberer
SCSI Port
Posts: 39
Registered: ‎02-04-2015
Location: DE
Views: 307
Message 3 of 7

Re: Unable to see system drive while installing Nutanix CE on Server SR650

Thats correct. Simply setting up multiple 1-disk-RAIDs is not working.

Use a RAID Controller that supports JBOD Mode for disks.

 

Played around with NTNX CE and ServeRAID M5110e a few weeks ago. That controller enables JBOD mode when you simply unplug the Cache/BBU Module.

 

Managed to use 16 JBOD disks of which disk0 one was an SSD within Nutanix CE then. But the Performance was not so great at all. Probably related to the limited CE features.

decodingilyas
Fanfold Paper
Posts: 4
Registered: ‎06-21-2019
Location: OM
Views: 292
Message 4 of 7

Re: Unable to see system drive while installing Nutanix CE on Server SR650

Hi,

 

Thanks for kind infroamtion.

 

I need to know that from where can we enable passthru mode in controller. currently both disks are in jbod mode there is no RAID configuration. 

 

Waiting for your reply.

 

Regards,

Ilyas Ahmed  

Lenovo Staff
Lenovo Staff
Posts: 5
Registered: ‎04-16-2019
Location: GB
Views: 272
Message 5 of 7

Re: Unable to see system drive while installing Nutanix CE on Server SR650

Hello Ilyas,

I assume you have a RAID 930-8i in your Lenovo SR650 server?

If this is the case, please have a look at the following web link : https://lenovopress.com/lp0579-lenovo-raid-management-tools-and-resources. In the ThinkSystem RAID management tools section you will find a table that describes various setup possibilities, depending on your OS.

Hope this is what you need. 

cterek
WWAN
Posts: 221
Registered: ‎04-20-2015
Location: CA
Views: 262
Message 6 of 7

Re: Unable to see system drive while installing Nutanix CE on Server SR650

JBOD mode should be what the controller is set for in the controller BIOS; assuming it's the 930-8i - you didn't mention which controller you have, please confirm what controller you have.

 

Although on the 930-8i it doesn't mention that JBOD mode sets it to pass-thru (like below).

 

....first thing first, what controller do you have on the machine?

 

Usually JBOD mode is pass-thru mode; as someone else posted, on the older M5110e (https://lenovopress.com/tips0857-serveraid-m5110-m5110e#technical-specifications) when you set JBOD mode is enables pass-thru.

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Lenovo Employee JackyJiang
Lenovo Employee
Posts: 18
Registered: ‎06-28-2018
Location: CN
Views: 134
Message 7 of 7

Re: Unable to see system drive while installing Nutanix CE on Server SR650

Hi Ilyas

Just quickly test it with 930-8i RAID controller, set disks to JBOD mode and can install Nutanix-CE successfully.

For your reference. Thanks.

 

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N-2.PNG

 

 

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