Can i install G-Tech "G Speed Q" drives in non-G-Tech RAID enclosure?

In Short no it doesn't support it BIOS will any support a boot drive of 2TB

but you can add it as a secondary drive or use it in an enclosure as a USB drive

What OS are you using? If this is a Windows system (or non-Apple, at any rate), what does the BIOS say about the HD size?

Something has become corrupt. You might not make it out "alive".

The drive is too big for the BIOS to recognize.
2 options:
A bios update from the board maker
Use smaller drives.

If you are planning a RAID many RAID controllers have size limits as well.

Did you format the new drive? Formatted size must be the same or bigger than remaining drive.

Most likely the problem you are encountering is due to the RAID mode the device is set in. Most RAID arrays utilize multiple drives of the same size, or with drives of differing size, they just use a portion of the largest that matches the smallest drive. When the device rebuilt the array it partitioned off a portion of the 4tb drive of the same size as the existing 500gb drive. If you want to use full capacity of both drives you would need to use JBOD mode, which just strings the disks together into a storage pool using all available space. This won't offer the data redundancy of RAID1 or speed boost of RAID0, but should allow using full space.

Backup any vital data before doing anything, then look for a switch on the back. Rather than RAID0 or 1 the options may be labelled Safe or Fast, but JBOD is usually still labelled JBOD, or sometimes Big. You can try just flipping the switch to JBOD and seeing if it rebuilds to use all space. If that doesn't work you may need to remove the 4tb drive, connect it to a different system and erase it to get rid of the 500gb partition, then with the Lacie set to JBOD reinstall the 4tb drive so it will add its full size to the array.

The safest option though would be to buy another 4tb drive, backup all data and install both 4tb drives with the device set to RAID1/Safe. You would only get 4tb of total storage, but it would mirror the data on both drives so if one fails the other will still have your data. With JBOD you won't have any auto-backup. If a drive fails the data on it will be lost.

There is a 2TB limit with MBR (Master Boot Record), but even a larger drive can be partitioned. So a single 4TB (biggest on the market) drive will look like several drives.
External drives that are bigger than 4TB are really several physical drives combined by an array.

RAID 1 requires optional SCSI drives, cables, and even software?
http://support.dell.com/support/edocs/systems/ws670/en/ug_en/before.htm


Add on SATA 3 cards to PCI are not a good idea if you are looking for speed. They just bottlenecks the throughput.

choose "run..." from the start menu, type "diskmgmt.msc" and hit enter. in this module you can manage your disks and partitions. if your raid drive does not show up in the list at the bottom, there will be a hardware problem with the RAID.

> message is .... one hard drive is non RAID and the other is fine

Is that REALLY the exact wording of the message???

Disconnect the disk-drive(s).
Buy another disk-drive (less than $50) and install Windows onto it.
Then, attach the existing drives, and copy your files from the "old" disk to the "new" disk.

theres a possibility that the hard drive is not formatted for mac.
-check if the raid configuration set on the hd is compatible with the mac that your using.

Same problem. This from WD Answer ID 1664:
Important: The user serviceable enclosure will only work with replacement hard drives from Western Digital. Inserting a non-Western Digital hard drive into the enclosure could cause damage or data loss.
So Hitachi drives will not work at all. After talking to tech support, it seems you have to have them send you a replacement disk in order for it to work. 
I'm looking for a way around this since I want to upgrade my dual 500 G drives with dual 1 TB drives also. Maybe they throw something onto the boot sector that tells the MyBook controller what to do, who knows? The search goes on. 
db