G-RAID gen 4, became very slow to move data from it (mac)

Legacy Products G-Technology G-RAID
1

Hi,

I have a G-RAID 2TB Gen 4 eSata/Firewire/USB (GR4 2000 EMEA), and I had it for few years, very happy with it.
But, in the last month it started behaving erratically, randomly ejecting, even freezing few times… but still very usable.
I’m a mac user and I’ve recently updated to Yosemite, so I though could have been something related (sadly).
Until the last week, when he became incredibly slow to copy data from it.

I was trying yesterday to move something out, before it’s too late since (as a stupid, I know) I have no other backup for some of the data yet.
It was impossibly slow, starting between 8/30 mb/s and becoming later to ~400 kb/s, when I decided to stop to avoid causing more issues.
I was connecting it with a firewire+firewire to thunderbolt adapter to a macbook pro late 2014.
I tried before with the usb cable, but it was even slower.

The data is all there, just very slow to show in finder and impossibly slow to move out.
I checked it with disk utility and with disk warrior, all good for them.
In my ignorance, I felt it could be a hardware problem, or power maybe, so I’ve stop with the copying before stressing it even further.

What should I do, any advice?
Is there any service shop you recommend in London (UK)?

Many thanks for you help!

2

Hello,

With the performance drop you’re experiencing with the drive it points towards one of the drives in the RAID is failing. The other drive is trying to compensate and it is the reason why it still mounts and is usable although it is extremely slow.

With this your best chance is to slowly transfer off the most important data, there are no repair shops that can fix this sort of issue as it is with the drive mechanism of one of the drives inside. The way this drive works, it requires both drives to work together since it is in RAID0.

3

Hi,

Thanks for the quick reply.

At this stage, what your recon would be the safer/quicker way to copy on mac os?
Finder, or some software/command?
I’m not a terminal expert, but maybe I can ask someone or try if would give better probability.

Many thanks

4

I would recommend something like carbon copy cloner. It can transfer and handle interruptions and it will retry if there are issues. It can also be used to clone the drive.