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RN104 Drive not available
New system. Only been running for 2 days. I have 2 * 4tb WD red drives. Both drives show in the admin page when i look at volumes and performance however I am only showing 3.61TB of free space. I tri...
The RAID redundancy gives you some protection for your data when a disk fails. Normally all you need to do is replace a disk when it fails. Your data remains fully available during the entire process. Also, when you add a disk the volume automatically expands - again your data is still available throughout the process.
For most users this is a desired feature (and it is the default).
If you decide you don't want it, you can convert to jbod, which will give you two 4 TB volumes with no redundancy.
Either way, you should have a backup plan in place. Devices can fail, so it is unwise to trust your data to a single device. If you do, at some point you will lose it - its just a matter of when.
Your data volume is redundant. The data is on both disks. Have a read about RAID-1.
If you add a third disk your volume capacity will double. Have a read about RAID-5.
The RAID redundancy gives you some protection for your data when a disk fails. Normally all you need to do is replace a disk when it fails. Your data remains fully available during the entire process. Also, when you add a disk the volume automatically expands - again your data is still available throughout the process.
For most users this is a desired feature (and it is the default).
If you decide you don't want it, you can convert to jbod, which will give you two 4 TB volumes with no redundancy.
Either way, you should have a backup plan in place. Devices can fail, so it is unwise to trust your data to a single device. If you do, at some point you will lose it - its just a matter of when.
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