RAID0 array failure

[Bones]

It appears one of the disks in my raid0 array has failed, the error shown on the Adaptec AAR-1220SA bios is:

No Int 13 Drives to support

No bios installed

So i entered the raid bios and checked the status of the array, the second drive is showing the message: Missing Member (ouch).

Questions:

1. Is this just a straight up hard drive failure? I have checked all cables etc.

2. The drive is less than a month old, where do i stand with that?

3. Any ways of recovering data? I was stupid enough not to have backups. (learnt my lesson)


any help appreciated.

 

[NickK]

There's not way of recovering data from RAID0 from a single disk. The data blocks are interleaved. Even if you do manage to get the data off the dead disk getting the RAID0 array to accept the recreated dead disc image may be a problem too.

Finding anything intelligible on a RAID0 drive is also hard as the standard search mechanism will have half the information missing in big chunks..

 

[Bones]

Yeh i realise that, i'm just wondering if theres any chance that it may not be the drives that have failed. The Error saying "No BIOS Installed" made me think that it could possibly be the Raid card that is borked.

 

[EsaT]

2. The drive is less than a month old, where do i stand with that?

That would be in area called HDD infant mortality.
Concealed slight manufacturing faults/weaknesses generally rear their ugly heads after little use/stress.

While in theory it could be also controller problem considering other drive showing but other not it looks like that one drive simply died.
You could try narrowing it down by attaching "MIA" drive to motherboard for seeing can motherboard recognize it.


Because of interleaved data positioning recovering anything is very hard.
In case of drive electronics read/write head system failing recovery companies can often recover everything (costs arm and leg) if they have all drives of array but if drive has fault in platters at least some data is always permanently lost.

And striping shouldn't be even called as RAID because it lacks redundancy and worse:
In two drive array probability for drive failure is basically double that of single drive so as minimum RAID0 actually doubles chances for loosing data.
(three drive striped array would have tripled data loss chance etc.)

 

[Bones]

I have excepted the fact that the data has been lost, now i'm trying to find out if i need to RMA the drive.

I have both the drives plugged into normal SATA now, do you have any software recommendations for scanning for errors?