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Forum Discussion
X-raid or raid-1
Just got the NAS and installed 2 disks and picket the default X-raid (?). If i understand this right i now have one volum twice as big 2x2 TB. By default it has a "backup" share and a "media" share. Now, if i put the same files in both "media" and "backup", will the files be physically stored on both disks?
I know that raid-1 mirror the two disks, so to decide what to go for i hope someone can explain how backup is handled on X-raid. If one of my disks crashes, will i lose random data as i lose half of my big volum? Or can i make sure that important data is stored on both disks as well?
I know that raid-1 mirror the two disks, so to decide what to go for i hope someone can explain how backup is handled on X-raid. If one of my disks crashes, will i lose random data as i lose half of my big volum? Or can i make sure that important data is stored on both disks as well?
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- If you are using XRAID, 2x2TB disks will give you a 2 TB volume size, with one disk being redundant.
- StephenB is correct. With XRAID, it will be redundant. Only providing you with half capacity of the 2x2TB disks, reserving half for the redundancy of the system. The benefit to XRIAD would be the ability to expand in the future, without the hassle that comes with the traditional RAID.
- If you stored the files in both the backup and media shares you'd end up with four copies of the data.
Anyway don't confuse RAID with backup. RAID is great but there are a number of problems that it can't protect against. See Preventing Catastrophic Data Loss
You should backup important data e.g. to a USB disk, another NAS, the cloud or some place else, in addition to using X-RAID.
Yes. Putting the same files in both shares is not a backup. It might help with low-level recovery tools if the array fails, or accidental deletion. But it doesn't ensure that you can rebuild the array. In my view that approach is not a very efficient use of the disk space. A true backup on different device is much better.mdgm wrote: If you stored the files in both the backup and media shares you'd end up with four copies of the data.
Anyway don't confuse RAID with backup. RAID is great but there are a number of problems that it can't protect against. See Preventing Catastrophic Data Loss
You should backup important data e.g. to a USB disk, another NAS, the cloud or some place else, in addition to using X-RAID.- I have the same question - only my machine (Duo v2) offers x-raid 2. I was after mirroring for redundancy and would have chosen raid 1. Is x-raid 2 the same? I am a complete newbie to raid, and have read everything I could find, and watched the tutorials. I just want to be able to remove a dead drive, put in a new one and have my data automatically copied onto the new drive. (I have put 2 x 2TB drives in and am setting it up now). If the basic unit is fried somehow, how can the data be recovered?
- Sorry - further forum searching helped me find my answer.... went with x-raid 2. :oops:
- Thanks for the clarification guys. Now i just have to play around with the unit and learn how to get the most benefit out of the device.
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