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Best way to build 2 NAS Server (25TB each RAID6) for replication - using existing readynas hardware
we are trying to build 2 NAS servers with around 25TB RAID6 Storage (replicate with each other -21TB used so far) & we need to figure out the least expensive way to do this utilizing existing hardware here is our current setup.. (using 30 Hard drives right now with 7 extra, all on HCL smaller drives are older/expected to fail requires RAID6 (lowest "unused" disk space if possible) RN628X (10TB,10,8,6,6,6,4,3) usable =28.16TB with EDA500 (1.5TB, 2,1,1,1) Raid5 usable =4TB RN716X (10TB,10,4,4,4,4) usable =14.53TB with EDA500 (750GB, 750, 1,2,2) usable =2TB PRO6 (750GB, 750, 500, 1,1,1) usable =2.48TB - Extra drives avail = 500GB, 500,500,150GB,250GB, 160GB, 100GB) so do we simply add larger drives to 716 to achieve 25TB (what sizes HD to add?), then buy a 2nd/3rd EDA500 to attach to the 716 ultize the extra drives in RAID6? or would it be better to pickup a RN528X (for the 8bay CPU/RAM not as important) attach the existing EDA500 - with the goal of getting rid of the PRO6 (using OS6 out of warranty) and 716X (almost out of warranty) - I realize someone might say "get rid of everything & buy a RR4360x" or RR4312x with expansion but it's not in the budget.. or if "moving around HD between NAS servers (for example move the other 10TB into 628x (so you have 4x10TB) & buy <this size HD> for 716x ... another idea on the PRO6 use the oldest 150/250 then when the drives fail upgrade them to 500 etc. - I have been trying to use the Netgear XRaid calulator but it's outdated - so I'm looking for some advise, if the 528x would be the best option as we are also trying to reduce the number of boxes - we just don't like having unused hard drives around..
