Raid degraded when I ran an old diagnostic (1999) it said failed to spin up. This is a 5 set striped set. The server is still working (though I don't know why). Is there a diagnostic for windows that can let me know which of the five drives are having the problem? The best guess model number is hp netraid adapter D.03.02. that is what comes up on the command line during POST

what OS?
what disk?
no raid card stated, no array stated, no type of array stated.
One can put 100s of RAID cards in this server.
both raid cards or HBA cards,(forJBOD)
i can fix any server, but first need to know what is in the box first
you meant the boot disk has errors, right,? boot.
that would tell me the disk IS BAD.
but if and ARRAY , that means you must run SMART tests
on the disks, 1 by 1 to find the bad disk.
if smart shows its bad, or weak its for sure BAD.
on real servers. the server sends you email, (set up right)
telling you disk 3 in a RAID 6 is bad, replace it now.

are you running hardware or software raid, or HBA or
fake raid cards, (4 classes there.!)

the base system new has.
4 port SAS 5/i integrated SAS controller (no RAID_
and optional, from DELL , news.
Optional PERC 5/i integrated SAS/SATA daughtercard controller with 256MB cache,
PERC 4e/DC, PERC 5/e adapter

or any of 1000s of other aftermarket cards there.
I run LSI 9361s (with MSM appl loaded)
this card will tell you what disk failed every time no kidding.
so will the PERCs setup correctly
the PERCs and my LSI and my HP raids
all have installed monitors for the RAID ,a program that runs full time all the time, and reports errors , many ways,
did you load that first and use it? seems not.
as no mention of SMART at all.
good luck.
Im not sure the names on DELL , MSM like software.
ah its OSA
never run a PERC lacking this APP. or you can not keep the server on line,.

http://www.dell.com/support/search/us/en/04#q=Dell%20OpenManage%20Server%20Administrator&sort=relevancy&f:langFacet=[en]

When you restored to factory setting you have reset the RAID configuration & probably lost all the data

Raid O is no RAID. Data is lost if the hard drive failed. Always use RAID 1 (mirrored) for OS and RAID 5 (striped) for DATA. That's 5 drives your server should shave been configured with.

Hello,

Use RAID 1 (Striped) or RAID 5 (Striped w/Parity) Please consult your RAID hardware documents for information on configuring RAID.

Good Luck
C2Solutions

In a RAID 5 config, you need at least 3 drives (you can have more however). A small part of every drive is then reserved for recovery data for the other drives. So two drives together hold all the data needed to restore a 3rd drive.

The Raid Controllers in the Dell Poweredge Servers are hot swappable. So you can just pull the faulty disk and then insert a new replacement drive in the same slot (Needs to be the same type and size or bigger. However, if the disk is bigger than the other 2, then only the size of the two other disks will be used on the new drive). The Raid controller will then see that there is a new disk and automatically start the recovery process. You will be able to see this when you open the Controller software. Once the recovery is done, the RAID 5 will be fully functional again.

While one of the disks is faulty or missing the two remaining disks will continue to work, but at the severely degraded performance. After the rebuild the performance will be back to the way it was before.

The rebuild can take more than an hour, depending on the disk sizes used.

There is also an option on some Controllers to select one drive as a "spare". Then you insert one more disk and set it as spare. It will not start working unless one of the other disks in the Raid fails. That's when it is used automatically as a replacement.

Hi,
If two drives have failed out of a RAID 5 array, unfortunately i'm pretty sure that means that the array has degraded beyond its redundancy level.
Advanced data recovery may be able to help with getting your data back, but I wouldn't pin your hopes on it. Once two discs fail, the array becomes degraded, and the data is irrecoverable.
Did you manage to make a backup before the drive(s) died?

Hi,
You don't specify whether previously on your USB it was the same lacie external or whether it was a different external drive. It sounds like you were using a different external drive, most likely a single drive.
You've specified that you've got your lacie setup in raid 5. Raid 5 gives a very good read spead and a good redundancy for incase a drive fails, however it's write speed is very very slow.
It will be much slower than a single drive on USB for writing to it (i.e. backups), but you should see a huge performance boost in reading from the drive than your previous usb.
If you need it to be faster, you would be better suited looking at configuring it for one of the following raid setups:
Raid 0: striping (not recommended for backups) - data is split over all drives, however if 1 drive fails you lose all data.
Raid 10: striping + mirror . half the drives are striped (like above), but the other half mirror the striping half so if one drive fails there's a backup of it. You only get half the disk space though, so if you have 4 x 1Tb drives, then you'll only get 2Tb of space.

Here is a link to info from Dell about exactly how to do it.

http://en.community.dell.com/forums/t/18625422.aspx

A few things to keep in mind:

1. Your data should be safe but back it up first anyway.

2. Schedule this off hours if possible as you won't lose access to the data during the re-striping process but performance will be degraded and it will most likely take hours to complete.

Revert back to original configuration of hdd in your RAID setup. Boot to SCIS BIOS and double check functionality of hard drives. The error is probably telling you that Disk1 is degraded because disk 0 is failing and you removed the wrong hard drive.