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Forum Discussion
How to configure Duo as Non-RAID
I have a ReadyNAS Duo which came with a single 1 TB drive. I want to upgrade it to 2 TB. The forum FAQ has the following question and answer: » Does ReadyNAS support JBOD or some sort of non-RAID s...
Right. The wording should be corrected.
tedebus wrote: I have a v2 and I see these option: Auto, RAID0, RAID1 and JBOD.
I don't know, but I think that "one RAID-0 volume per disk" is a meaningless phrase. The word "RAID(1)" assumes that system has an "array of disks" (at least 2). A single disk is... a single disk.
The latter is called "SPAN", and not "JBOD". And that's exactly what is missing as configuration option. I want SPAN, and I want disk0 to be able to sleep while I am watching a movie playing from disk1.
At this point I think that both versions are quite similar, the only thing that has changed is the wording:
v1 RAID0 with span and striping = v2 RAID 0
v1 RAID0 without span and striping = v2 JBOD (that's not RAID)
Apparently Netgear has corrected these inaccuracies on v2.
To be more precise (IMHO) there is another configuration that's missing: JBOD should be configured in two ways: "independent mode" (without spanning, each logical volume has its own physical disk) and "continuous mode" (with spanning but without striping data, with a damaged disk you loose only a part of your data).
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