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Forum Discussion
NV+ (RND4000) —» RAID 1 over > 2 HDDs possible?
Greetings, For the ReadyNAS NV+ (RND4000), is it possible to operate RAID 1 over more than 2 HDDs? If so, how may an additional HDD be designated as the third or fourth mirror of the RAID without r...
I don't think I've ever tried Flex-RAID on a Sparc ReadyNAS (I may have a few years ago, but I can't remember). If you want to create a new volume you'll need to delete the existing one and then see what new volume you can create. I think you can only create a two-disk RAID-1 volume, but I could be wrong.
Even if possible it doesn't make much sense to run RAID-1 over more than two disks.
An additional disk can be added as a hot-spare. Your explanation of a hot spare is correct.
4-bay or greater x86 ReadyNAS (e.g. NVX, Ultra, Pro) support Flex-RAID RAID-10 with 4 or more disks installed.
6-bay or greater x86 ReadyNAS support X-RAID2 dual-redundancy (like RAID-6) and Flex-RAID RAID-6.
If you want greater protection than a single disk failure (I do), then I'd strongly recommend you get an x86 ReadyNAS.
You should remember that no matter what RAID configuration you use in the ReadyNAS if the data is stored on one device it is not backed up. For this reason I'd suggest you backup your important data primarily stored on the ReadyNAS regularly e.g. to a USB disk or another NAS device. See Preventing Catastrophic Data Loss
Even if possible it doesn't make much sense to run RAID-1 over more than two disks.
An additional disk can be added as a hot-spare. Your explanation of a hot spare is correct.
4-bay or greater x86 ReadyNAS (e.g. NVX, Ultra, Pro) support Flex-RAID RAID-10 with 4 or more disks installed.
6-bay or greater x86 ReadyNAS support X-RAID2 dual-redundancy (like RAID-6) and Flex-RAID RAID-6.
If you want greater protection than a single disk failure (I do), then I'd strongly recommend you get an x86 ReadyNAS.
You should remember that no matter what RAID configuration you use in the ReadyNAS if the data is stored on one device it is not backed up. For this reason I'd suggest you backup your important data primarily stored on the ReadyNAS regularly e.g. to a USB disk or another NAS device. See Preventing Catastrophic Data Loss
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