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Forum Discussion
spinaltap1
Jul 16, 2012Aspirant
Why should I buy another ReadyNAS?
I've been happily using my ReadyNAS Duo .v1 for the past three years (cost £235), but I have also been tempted by the current offer on the ReadyNAS NV+.v2 (£160). I use my ReadyNAS Duo for streamin...
PapaBear1
Jul 17, 2012Apprentice
No. With X-Raid2 (and X-Raid) you cannot add a drive smaller than the previous smallest drive. Now, if you use Flex-Raid and establish a Raid1 volume with the first two drives (mirrored) I don't know if that precludes smaller drives in the new volume (volume would be D:) or not. I don't know of any forum topic that has answered that.
If you start with the two 500GB drives and then add the two 2TB drives you could have a net volume of 2.7TB (after overhead), with one 2TB drive providing redundancy, a first layer of 1.35TB (net) across the two 500GB drives and 500GB of the 2TB drive and a second layer of 1.35TB (net) on the 2TB drive. This is a feature not available with X-Raid on the sparc based Duo and NV+ (v1) which you are familiar with. Then if you replace one of the 500GB drives with another 2TB, it would result in another increase of 1.35TB (net) bringing you total volume of just over 4TB (net). As you can see you would get more volume this way. If you assign only 500GB to Time Machine, the other 2.2TB (net) would be available for streaming.
If you start with the two 500GB drives and then add the two 2TB drives you could have a net volume of 2.7TB (after overhead), with one 2TB drive providing redundancy, a first layer of 1.35TB (net) across the two 500GB drives and 500GB of the 2TB drive and a second layer of 1.35TB (net) on the 2TB drive. This is a feature not available with X-Raid on the sparc based Duo and NV+ (v1) which you are familiar with. Then if you replace one of the 500GB drives with another 2TB, it would result in another increase of 1.35TB (net) bringing you total volume of just over 4TB (net). As you can see you would get more volume this way. If you assign only 500GB to Time Machine, the other 2.2TB (net) would be available for streaming.
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