I suggest you make clear yourself what you want the most -> More storage or Space?
If you are looking for more storage for your family photos for long term then 2TB external HD does not help you much since they are not best options, try think of a home NAS which is more static.
You also need to think the more you carry your external HD around, the more easier you will damage your data ( you do not have 2nd backup, right?) So best practice should be a NAS at home (for permanent use), then a normal cheap 500GB external HD for data mobility.
我建議你唔好將d簡單問題複雜化。
你只不過想將 d 生活資料草埋遮,唔駛 NAS 下話?
我建議你買 2.5吋外置,牌子 WD、Seagate、Baffalo。2.5吋好似最大有 1T,另外,再買多個 3.5吋,或者用電腦部 HD,將一d 極重要資料 back up。Back up 由於有壓縮,容量可以細d;壓縮比有咁大較咁大。
跟住將一d舊資料燒落一d靚的 DVD/BD 度,擺好佢,標簽要分清楚,將來搵番都易d。
我有d十幾年前d影帶,到e+仍然睇得番。
你當然可以用 NAS,不過多隻香爐多隻鬼;你既情況,我覺得唔需要囉~ NAS