Can't add Mirror for 2 x 1.5TB single partition drives

[r11pag]

HI,

I have 2 1.5TB eSATA USB2 external drives. I want to set them up as a mirror.
My first drive is formatted NTFS with all my data - the second is brand new - no partition.

I select the first drive and select Add Mirror and select disk 2 my new drive.
I get the warning that the drive will be converted to a dynamic drive.... I select OK.
I then get the following error-
"this operation is not supported by the object"

Any ideas???
Thanks
Howard

 

[zigzag3143]

HI,

I have 2 1.5TB eSATA USB2 external drives. I want to set them up as a mirror.
My first drive is formatted NTFS with all my data - the second is brand new - no partition.

I select the first drive and select Add Mirror and select disk 2 my new drive.
I get the warning that the drive will be converted to a dynamic drive.... I select OK.
I then get the following error-
"this operation is not supported by the object"

Any ideas???
Thanks
Howard

Yoou may just need to set up a dynamic partition from the free space


Ken

 

[r11pag]

Retried using free space - Still fails with same error

Hi Ken,

Many thanks for the reply. I shrank the volume and tried creating a new mirror using the free space. The wizard goes through fine - gives me the summary and when I click OK to proceed it fails with the same error. Interestingly when I try and repeat the process the drive letter I chose last time is unavailable for selection??

So I tried converting my existing disk to dynamic first - and the convert to dynamic fails with the same error!! So it appears its the initial conversion that is generating the error......

H

 

[Dwarf]

Are they separate units plugged into different USB ports?

 

[r11pag]

Yes - the drives only have the one USB connection each so they are plugged into separate ports on the back of my Dell Optiplex 745

 

[Dwarf]

I think that is your answer. Whilst it is perfectly possible to have a RAID array on internal disks, either connected to the motherboard or an add-on card, it is not possible to have such an array if connected externally via separate USB ports. You can via separate eSATA ports, since they are basically the same as the on-board ports except external. You can have an external USB RAID, however the disks need to be in a single enclosure which can utilise RAID, i.e. has hardware support, and which only requires a single USB port.

 

[r11pag]

Hey, many thanks for that. The two drives both have eSATA ports but my server only has USB.

Looks like it's back to manual copies again 8-(

Thanks for all your help guys!

 

[thehatt]

I had the exact same problem, same error message and everything - but mine is from one USB port.. I have two drives sitting in a docking station. I want to mirror them, but I keep getting this same error message. So, my problem is not because of connecting them from two USB ports... thoughts?