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Should NAS buy two or four slots? I've used both machines, so let me calculate this for you. Don't save first and replace it like I did
Should NAS buy two or four slots? My first unit was the DS220+ with dual drive drives. A year later, when the drive was full, I switched to four drive slots, and the extra cost was far greater than the price difference of just one case. This article will analyze the RAID configurations for both drive slots, real capacity, expansion options, and electricity costs: who needs two drives, who goes straight to four, and whether to add SSD cache while you're at it. Read this before placing an order—it's worth it....
