PowerEdge Hardware General

Last reply by 10-07-2022 Solved
Start a Discussion
2 Bronze
2 Bronze
155

R720 CPU Slow & iDrac Web Login Loops

Dear Community,

I'm facing some issues with one of my refurbished R720.

  • after a Memtest86+, memories are OK but the CPU's cache speed seems stuck on half of their limits (L3 600mb/s)
  • Impossible to boot on SLI_3.0.0_A00.iso from a usb drive, the linux init doesn't come up.
  • iDrac web interface: login page loops itself after a valid logon
  • Virtual console inaccessible even from OME
  • Impossible to update BIOS from LifeCycle Controller since rollback
  • SATA SSD bench test ~80mb/s read/write from SAS Backplane or TBU SATA

In addition, the overall system is slow compared to the other R720 in stock:

  • SSH racadm commands
  • BIOS navigation
  • LifeCycle Controller Operations (Network Settings, Catalog discovery, ...)

Server setup with minimal requirements to identify what going on:

  • MB: 046V88 (Version 2)
  • RAM: 8GB (Port A1 w/ Samsung stick M393B1K70DH0-YH9)
  • CPU: 1x Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz
  • iDrac: iDRAC7 Enterprise License - v2.65.65.65
  • LifeCycle Controller: v2.65.65.65
  • BIOS: Rollback to 1.1.2 (initially 2.9.0)
  • Dell OS Driver Pack: 7.1.0.9
  • Backplane: 16x2.5" w/ Expander v1.0.3
  • Storage Controller: H710P Mini

Someone else had the same issue or any idea on these issues before ordering another MB ?

Thank you in advance.

Solutions (2)

Accepted Solutions
137

Vherrlein,

 

You won't be able to walk the iDrac back that far, what you would have to do is walk the BIOS back up to current, as you can't just update to the current version from that far back without bricking the motherboard. So you would need to walk the BIOS up without skipping more than 2 or 3 at a time, or anything marked Urgent.

 

Also, if you have access to the iDrac web interface, I would suggest exporting the iDrac license in case there is any issue then you have it available to restore.

 

 

 


Chris Hawk
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#Iwork4Dell

Did I answer your query? Please click on ‘Accept as Solution’
‘Kudo’ the posts you like!

View solution in original post

2 Bronze
2 Bronze
108

After updating all BIOS firmwares without jumping versions, then setting up basics for having iDrac web interface working (ports, sslredirect, admin password, vncserver).

i discovered a setting which screw all perf of that beautiful machine.

Power Cap policy.

for unknown reason it was enabled with 21W max.

even on idle with minimal setup the machine consume 55W.

since that policy is disabled everything works like a charm.

thank you again.

View solution in original post

Replies (5)
142

Vherrlein,

 

 

 

Thank you for providing all the details of the server and issue. I am sure that the issue will be with the BIOS, but would like to see if you can confirm if it is indeed on version 1.1.2, as well as I why it was rolled back to that old of a bios version from 2.9.0?

 

If it is on 1.1.2, and the iDrac is at 2.65.65, then they are too far apart in versions to communicate and that is what is causing the issue with the iDrac.

 

Let me know.


Chris Hawk
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#Iwork4Dell

Did I answer your query? Please click on ‘Accept as Solution’
‘Kudo’ the posts you like!
138

In fact the rollback have been done after all issues mentioned above.

i guess the previous owner did mistakes by upgrading iDrac and BIOS with latest versions.

ill try to downgrade iDrac in order to perform a proper upgrade path. By the way is it feasible to recover iDrac with the factory version, if no what would be the procedure with the correct starting version?

138

Vherrlein,

 

You won't be able to walk the iDrac back that far, what you would have to do is walk the BIOS back up to current, as you can't just update to the current version from that far back without bricking the motherboard. So you would need to walk the BIOS up without skipping more than 2 or 3 at a time, or anything marked Urgent.

 

Also, if you have access to the iDrac web interface, I would suggest exporting the iDrac license in case there is any issue then you have it available to restore.

 

 

 


Chris Hawk
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#Iwork4Dell

Did I answer your query? Please click on ‘Accept as Solution’
‘Kudo’ the posts you like!
136

The iDrac web interface doesn’t let me pass the login page it loops on it.

I’ll backup the licence with racadm commands.

thanks for your advice I’ll keep you informed 

2 Bronze
2 Bronze
109

After updating all BIOS firmwares without jumping versions, then setting up basics for having iDrac web interface working (ports, sslredirect, admin password, vncserver).

i discovered a setting which screw all perf of that beautiful machine.

Power Cap policy.

for unknown reason it was enabled with 21W max.

even on idle with minimal setup the machine consume 55W.

since that policy is disabled everything works like a charm.

thank you again.

Latest Solutions
Top Contributor