Lost Raid volume set

Hi to all

I have a Big Problem with a Raid 5 system.
The raid 5 system set is composed by 8 HD, 1 Tb each one, no spare disk.
I have had a Black out problem.
After this event, at server restart, the system reports "no Volume is available".
I'm using Areca arc-1220

The Hierarchy is :

Raid Set # 00
Ch01
Missing
Missing
Missing
Ch05
Ch06
Ch07
Ch08

Raid Set # 00
Missing
Ch02
Ch03
Ch04
Missing
Missing
Failed
Failed

IDE Channels

Ch01 Raid Set # 00 1000.2GB Hitachi HUA721010KLA330
Ch02 Raid Set # 00 1000.2GB Hitachi HUA721010KLA330
Ch03 Raid Set # 00 1000.2GB Hitachi HUA721010KLA330
Ch04 Raid Set # 00 1000.2GB Hitachi HUA721010KLA330
Ch05 Raid Set # 00 1000.2GB Hitachi HUA721010KLA330
Ch06 Raid Set # 00 1000.2GB Hitachi HUA721010KLA330
Ch07 Raid Set # 00 1000.2GB Hitachi HUA721010KLA330
Ch08 Raid Set # 00 1000.2GB Hitachi HUA721010KLA330

I have a lot of video files on this.
Please, how to recover the Raid set?

Best Regards
Nanni

You should be able to access the Areca controller and perform a RAID verification for the RAID set 00. I would also check all cables and power connectors to the drives as well and then check from the Areca controller.

Hi and thanks for reply.

When everything were working, I had only 1 raid set 00.
Now I have 2 Raid set 00. (this is wrong)

The missing disks of the first Raid 00 (disk 2- disk 3 - disk4)
are in the second Raid set 00.

How I can bring back Raid set to initial condition?

Best Regards
Nanni

Did you contact Areca on this issue, it does seem strange for it to have changed.

Hi
I have sent mail to Areca, but I have not had answer yet.

Regards
Nanni

I would contact Areca tech support to see what they reccomend.
keep us posted

Hi and thanks for support.
I have received support from Areca and now the Raid set is OK.
Do I have to make some updating for this Nas-R3 version?

Version 5.0.NE46000000.3088
Release date 2008-05-07
S/N 94046477

Best Regards
Nanni

Hi Nanni

There is a later release of the NAS product on our website
NAS-R3 update ver. 5.00 up47 build 3200
Here is the link:
http://www.open-e.com/account/products-and-updates/

How did Areca resolve the Raid problem that you had?

Nanni,

I know I'm digging up an old thread, but can you please give some insight into what caused your strange volume doubling/disk swap and how you fixed it?

We have a 3ware controller and have experience something similar in conjunction with a freezing Open-E server that is getting almost no traffic.

Our Controller-1 went from having a 15 disk raid5 unit and single-disk spare unit to appearing to have two 15 disk raids, one with 14 degraded disks one good and one with only one degraded disk and 14 good. the spare unit on Controller-1 is gone.

Luckily this 40TB array is not in production yet.

Thanks if you can provide some insight from your experience.

-J