PRAID EP400i - RAID1 - how to get back to Operational status

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aharju
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Joined: Wed Jan 31, 2018 14:23
Product(s): FUJITSU PRIMERGY RX2540 M1 2xE5-2640v3
PRAID SAS 12G 0/1/5/6 1GB EP400i

PRAID EP400i - RAID1 - how to get back to Operational status

Postby aharju » Wed Jan 31, 2018 15:19

RAID1 configuration with two SSD -disk; disk1 and disk2.

1) We took disk2 off before system big upgrage
2) system was updated with disk1 only. It was bad upgrade so we need to rollback with disk2.
3) power off, tooked disk1 out
4) put disk2 in, power on server, pressed "F" to import foreign configuration
5) everything is ok and system running smooth BUT of course raid1 state is now degraded.

Question: How safe is it to put disk1 back to raid1. How to be sure it is not syncing from "bad" disk1 --> good disk2? Is there a way to check which is master/slave or is it necessary any more? What is best practise to get this done and make raid1 operational state again?

I also have SSD -disk3 from other server´s raid1. Is it "safer" to use it?

Thanks!

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