Hello!
I know this is not a specific apple question, but I'm trying to use this drive soley on a Macbook Pro.
I tried to re-format this Raid and it seemed successful. All of the data was cleared and the drive's name
was changed. However, the two raid sliced were not renamed, and I need those changed as well.
Any tips on how to do this?
OS X Mountain Lion (10.8.3)
How is the drive set up 'raid' 0 or raid 1? Have you looked at the LasCie user manual?
From the LaCie manual Formatting
Thanks for the response and help!
It is setup as a Striped RAID. I've checked the manual, looked all over forums, sent them a support ticket, but I have found no help anywhere.
At this point I'm just not quite sure what to do. I've tried to delete the slices and raid altogether, but it won't let me.
The attached image is what I see in Disk Utility.
So if you go in and break the two disks apart, turn them into two separate disks, name and format them and then make them back into the stripped array doens't that work?
And while on the subject of 'Raid' 0 I quote from the LACie manual
One disadvantage of a Striped RAID Set is the lack of built-in data security. In the event that one disk fails, all the files become inaccessible since parts of each string of data are written across the striped pair. Therefore, LaCie highly recommends backing up data stored on a Striped RAID Set at least once a day. You can back up the data to your computer’s internal disk or another hard drive with sufficient capacity.
please remember that this setup will double your chances of a disk failure.
regards
Thank you for that warning.
When I go to each drive and try to Erase it, it gives me the error "Disk Erase failed with the error: Couldn't open device." It also says the same thing when I try to create a new single partition on each drive, as well as delete the slices.
If in Disk Utility when you go to the Raid tab the two drives are shown as part of the RAID set right?
If you select one of the drives and then select the minus icon at the bottom of the window the drive should be removed from the set. Can you then go and dealt with it as a normal standalone drive?
I tried that on all fronts, but the minus icon is grayed out on all of them. I've tried selecting each disk at every place I can, and it never allows me to select it.
Ah hah! I figured it out. It was much easier than I thought.
I took out one of the drives from the enclosure, which allowed me to delete that missing drive which destroyed the RAID link. I then did that for the other drive as well. This allowed me to put both drives back into a new RAID setup.
Dear Jesselavander,
You finally saved my day. I had the simple problem to reformat a new LaCie 2big, that was delivered as RAID-0, to a RAID-1 drive. Following the LACie manual it did not work, and I spent hours to go through documentation and "support". Totally unsuccessfully, until I found your post, took out the individual drives from the enclosure, one after the other, which made it possible to drop the RAID-0 configuration and to finally reformat to RAID-1. What I find annoying is how misleading the LaCie user manual is in this respect. It gives you the wrong impression that you can go straight from RAID-0 to RAID-1 via the the Apple Disk Utility. It would be great if the guys who write the user manuals provide a correct description instead of stealing your time.
Herbert
Herbert,
I'm running into the same problem you have on the same HD. Can you explain how you were able to "took out the individual drives from the enclosure, one after the other"? I did that but still can''t see the individual drives. The Lacie directions are very lacking.
John
Formatting a LaCie 2Big thunderbolt raid
