Why dell perc h710 keeps losing the raid config?

[SHOT]

Every time I start the server (R720) I need to import the raid configuration. Does someone know how to fix this?

https://i.imgur.com/0AqSLeq.png

Note: not every time, when I restart windows it correctly detects the virtual drives.. Seems like that when the server stays off without main power for a while it loses the raid memory.

From my understanding the battery should not be the problem because it is used only to store the latest data cache and not to store the raid config.

Sometimes this also happens: https://i.imgur.com/lIlTpnT.png and I have to reboot the system to be able to re-import the configuration

Also, every time I have to import the configuration the background initialization starts from 0

[Applefreak]

32 minutes ago, SHOT said:

Every time I start the server (R720) I need to import the raid configuration. Does someone know how to fix this?

https://i.imgur.com/0AqSLeq.png

Note: not every time, when I restart windows it correctly detects the virtual drives.. Seems like that when the server stays off without main power for a while it loses the raid memory.

From my understanding the battery should not be the problem because it is used only to store the latest data cache and not to store the raid config.

Sometimes this also happens: https://i.imgur.com/lIlTpnT.png and I have to reboot the system to be able to re-import the configuration

Also, every time I have to import the configuration the background initialization starts from 0

Try replacing the CMOS battery.

 

Not sure on the second error.

[SHOT]

20 minutes ago, Applefreak said:

Try replacing the CMOS battery.

 

Not sure on the second error.

Isn't the raid config stored in a non-volatile memory? Does the raid config rely on a battery?

[Applefreak]

4 minutes ago, SHOT said:

Isn't the raid config stored in a non-volatile memory? Does the raid config rely on a battery?

If you have a dedicated controller, maybe. If the controller came with the system it is likely just an expansion card, relying on the motherboard to control it. I can't confirm without having the system in front of me but your issue sounds like a bad battery. If not, it's a hardware issue. replacing the battery is easy and cheap. Should be a CR2032 round cell battery.

[SHOT]

1 hour ago, Applefreak said:

If you have a dedicated controller, maybe. If the controller came with the system it is likely just an expansion card, relying on the motherboard to control it. I can't confirm without having the system in front of me but your issue sounds like a bad battery. If not, it's a hardware issue. replacing the battery is easy and cheap. Should be a CR2032 round cell battery.

I've ordered them but I don't think that's the solution 

[SHOT]

The issue was a bad hard drive. Replacing the disk fixes the issue and now it correctly detects the VDs every time.