クラウドストレージと自作ドライブ、本当に安いのはどっち？
Published: 2026年7月15日
Pulling live prices…
Live data across PricePerGig listings. Prices may change; Updated every few hours.
📊 As of July 25, 2026, the typical HDD on Amazon.com is $135/TB or $0.135/GB across the 4,620 live listings we track, with the widest choice of drives priced around $38/TB or $0.038/GB. The best deals on Amazon.com start from about $261 for 8TB ($32.6/TB), $350 for 14TB ($25/TB) and $590 for 20TB ($29.5/TB). The current best value is 14TB at roughly $25 per TB.
📊 As of July 25, 2026, the typical HDD on eBay.com is $95.2/TB or $0.095/GB across the 9,006 live listings we track, with the widest choice of drives priced around $92.7/TB or $0.093/GB. The best deals on eBay.com start from about $190 for 8TB ($23.7/TB), $330 for 14TB ($23.6/TB) and $550 for 20TB ($27.5/TB). The current best value is 10TB at roughly $20 per TB.
📊 As of July 25, 2026, the typical HDD on Newegg.com is $117/TB or $0.117/GB across the 1,050 live listings we track, with the widest choice of drives priced around $50.2/TB or $0.05/GB. The best deals on Newegg.com start from about $300 for 8TB ($37.5/TB), $400 for 14TB ($28.5/TB) and $810 for 20TB ($40.5/TB). The current best value is 14TB at roughly $28.5 per TB.
📊 As of 25 July 2026, the typical HDD on Amazon.co.uk is £156/TB or £0.156/GB across the 3,437 live listings we track, with the widest choice of drives priced around £44.1/TB or £0.044/GB. The best deals on Amazon.co.uk start from about £244 for 8TB (£30.5/TB), £330 for 14TB (£23.6/TB) and £517 for 20TB (£25.8/TB). The current best value is 14TB at roughly £23.6 per TB.
📊 As of 25 July 2026, the typical HDD on eBay.co.uk is £180/TB or £0.18/GB across the 4,532 live listings we track, with the widest choice of drives priced around £42.7/TB or £0.043/GB. The best deals on eBay.co.uk start from about £150 for 8TB (£18.8/TB), £249 for 14TB (£17.8/TB) and £466 for 20TB (£23.3/TB). The current best value is 12TB at roughly £15 per TB.
📊 As of 25 July 2026, the typical HDD on Overclockers.co.uk is £48.3/TB or £0.048/GB across the 55 live listings we track, with the widest choice of drives priced around £39.4/TB or £0.039/GB. The best deals on Overclockers.co.uk start from about £110 for 2TB (£55/TB), £180 for 6TB (£30/TB) and £280 for 8TB (£35/TB). The current best value is 6TB at roughly £30 per TB.
📊 As of 25 July 2026, the typical HDD on Box.co.uk is £50.1/TB or £0.05/GB across the 57 live listings we track, with the widest choice of drives priced around £45.6/TB or £0.046/GB. The best deals on Box.co.uk start from about £105 for 2TB (£52.5/TB), £271 for 8TB (£33.9/TB) and £330 for 10TB (£33/TB). The current best value is 10TB at roughly £33 per TB.
📊 As of 25. Juli 2026, the typical HDD on Amazon.de is 218 €/TB or 0,218 €/GB across the 3,552 live listings we track, with the widest choice of drives priced around 52,4 €/TB or 0,052 €/GB. The best deals on Amazon.de start from about 299 € for 8TB (37,4 €/TB), 354 € for 14TB (25,3 €/TB) and 519 € for 20TB (26 €/TB). The current best value is 18TB at roughly 24,1 € per TB.
📊 As of 25. Juli 2026, the typical HDD on eBay.de is 108 €/TB or 0,108 €/GB across the 176 live listings we track, with the widest choice of drives priced around 26,5 €/TB or 0,027 €/GB. The best deals on eBay.de start from about 43,3 € for 2TB (21,7 €/TB), 150 € for 6TB (25 €/TB) and 81,8 € for 8TB (10,2 €/TB). The current best value is 8TB at roughly 10,2 € per TB.
📊 As of 25. Juli 2026, the typical HDD on getgoods.de is 65,6 €/TB or 0,066 €/GB across the 95 live listings we track, with the widest choice of drives priced around 51,4 €/TB or 0,051 €/GB. The best deals on getgoods.de start from about 116 € for 2TB (58,9 €/TB), 178 € for 4TB (44,5 €/TB) and 295 € for 8TB (36,9 €/TB). The current best value is 8TB at roughly 36,9 € per TB.
📊 As of 25 July 2026, the typical HDD on eBay.com.au is $109/TB or $0.109/GB across the 1,137 live listings we track, with the widest choice of drives priced around $79.9/TB or $0.08/GB. The best deals on eBay.com.au start from about $390 for 8TB ($48.7/TB), $550 for 12TB ($45.8/TB) and $880 for 16TB ($55/TB). The current best value is 10TB at roughly $30.8 per TB.
📊 As of 25 juillet 2026, the typical HDD on Amazon.fr is 165 €/TB or 0,165 €/GB across the 2,733 live listings we track, with the widest choice of drives priced around 48,7 €/TB or 0,049 €/GB. The best deals on Amazon.fr start from about 285 € for 8TB (35,6 €/TB), 405 € for 14TB (28,9 €/TB) and 522 € for 20TB (26,1 €/TB). The current best value is 20TB at roughly 26,1 € per TB.
📊 As of 25 de julio de 2026, the typical HDD on Amazon.es is 206 €/TB or 0,206 €/GB across the 2,902 live listings we track, with the widest choice of drives priced around 51,6 €/TB or 0,052 €/GB. The best deals on Amazon.es start from about 300 € for 8TB (37,5 €/TB), 479 € for 14TB (34,2 €/TB) and 557 € for 20TB (27,8 €/TB). The current best value is 16TB at roughly 27,5 € per TB.
📊 As of July 25, 2026, the typical HDD on Amazon.ca is $246/TB or $0.246/GB across the 1,898 live listings we track, with the widest choice of drives priced around $70.4/TB or $0.07/GB. The best deals on Amazon.ca start from about $430 for 8TB ($53.8/TB), $574 for 14TB ($41/TB) and $999 for 20TB ($50/TB). The current best value is 14TB at roughly $41 per TB.
📊 As of July 25, 2026, the typical HDD on eBay.ca is $75.7/TB or $0.076/GB across the 162 live listings we track, with the widest choice of drives priced around $28.4/TB or $0.028/GB. The best deals on eBay.ca start from about $55 for 2TB ($27.5/TB), $70 for 4TB ($17.5/TB) and $115 for 8TB ($14.4/TB). The current best value is 8TB at roughly $14.4 per TB.
📊 As of July 25, 2026, the typical HDD on Newegg.ca is $146/TB or $0.146/GB across the 393 live listings we track, with the widest choice of drives priced around $70.3/TB or $0.07/GB. The best deals on Newegg.ca start from about $420 for 8TB ($52.5/TB), $745 for 14TB ($53.2/TB) and $907 for 20TB ($45.3/TB). The current best value is 20TB at roughly $45.3 per TB.
📊 As of 25 juli 2026, the typical HDD on Amazon.nl is € 116/TB or € 0,116/GB across the 1,494 live listings we track, with the widest choice of drives priced around € 55,8/TB or € 0,056/GB. The best deals on Amazon.nl start from about € 263 for 8TB (€ 32,9/TB), € 509 for 14TB (€ 36,4/TB) and € 464 for 20TB (€ 23,2/TB). The current best value is 20TB at roughly € 23,2 per TB.
📊 As of 25 luglio 2026, the typical HDD on Amazon.it is 199 €/TB or 0,199 €/GB across the 4,379 live listings we track, with the widest choice of drives priced around 50,5 €/TB or 0,051 €/GB. The best deals on Amazon.it start from about 306 € for 8TB (38,3 €/TB), 484 € for 14TB (34,6 €/TB) and 814 € for 20TB (40,7 €/TB). The current best value is 16TB at roughly 27,5 € per TB.
📊 As of 25 luglio 2026, the typical HDD on eBay.it is 99,4 €/TB or 0,099 €/GB across the 11,460 live listings we track, with the widest choice of drives priced around 96,5 €/TB or 0,097 €/GB. The best deals on eBay.it start from about 252 € for 8TB (31,5 €/TB), 426 € for 14TB (30,4 €/TB) and 460 € for 20TB (23 €/TB). The current best value is 20TB at roughly 23 € per TB.
📊 As of 25 juli 2026, the typical HDD on Amazon.se is 1 505 kr/TB or 1,505 kr/GB across the 952 live listings we track, with the widest choice of drives priced around 743 kr/TB or 0,743 kr/GB. The best deals on Amazon.se start from about 1 000 kr for 2TB (501 kr/TB), 1 346 kr for 4TB (337 kr/TB) and 331 kr for 6TB (55,1 kr/TB). The current best value is 6TB at roughly 55,1 kr per TB.
📊 As of 25 lipca 2026, the typical HDD on Amazon.pl is 575 zł/TB or 0,575 zł/GB across the 1,229 live listings we track, with the widest choice of drives priced around 198 zł/TB or 0,198 zł/GB. The best deals on Amazon.pl start from about 1124 zł for 8TB (141 zł/TB), 1255 zł for 12TB (105 zł/TB) and 1667 zł for 16TB (104 zł/TB). The current best value is 16TB at roughly 104 zł per TB.
Sourced from real discussions on r/DataHoarder and r/selfhosted, cross-checked against live PricePerGig listings.
セルフホスティング勢の永遠のテーマ。クラウドに毎月払い続けるべきか、それとも自分でドライブを買うべきか。
本気でデータを溜め込んでいる人向けに、単刀直入に答えましょう。
長期保存する大容量データなら、ドライブ購入の方が圧倒的に安いです。比較にすらなりません。
上の表にあるあなたのマーケットプレイスのTBあたりライブ価格こそ、この議論に決着をつける数字です。
この計算を見れば議論は終わる
クラウドプロバイダーが計算してほしくない部分がここです。
ハードドライブは一回払いのコストです。TBあたり一度支払えば、あとは何年も所有し続けられます。
一方クラウドストレージはTBあたり同程度の金額を、しかも毎月、永遠に請求してきます。
つまりドライブがTBあたり一定額の一回払い、クラウドが毎月その一部を請求するなら、驚くほど早く損益分岐点に達します。多くの場合1年以内です。それ以降、ドライブは実質タダのストレージになる一方で、クラウドの請求書は届き続けます。
上のライブ価格を見て、その一部を毎月払い続ける場合を想像してみてください。それがクラウドの取引条件です。
クラウドが本当に有利になる場面
私はクラウドのアンチではないので、公平に見ていきましょう。クラウドには本物の強みがあります。
クラウドが正解になるのは、以下を求める場合です。
- データ量が少なく、月額コストが誤差レベルで済む場合。
- どのデバイスからでも簡単に共有・アクセスしたい場合。
- ハードウェアを一切運用せず、自動でオフサイトバックアップしたい場合。
- 初期費用ゼロ、メンテナンスの手間もゼロにしたい場合。
スマホの写真や数点の書類程度なら、クラウドは優秀で、コストも無視できるレベルです。この規模なら利便性が確実に元を取ります。
ドライブ所有が圧倒的に有利になる場面
データ量が増え始めた瞬間、この計算は一気に逆転します。
メディアファイル、バックアップ、アーカイブ、増え続けるコレクション。ここでクラウドの月額料金は積み重なって本当のお金になり、ドライブ所有が大きな節約につながります。
データホーダーがドライブを買うのは、それが趣味だからではありません。50TBをクラウドに毎月保存する料金が目を疑うほど高いからです。
大容量分を自分で所有すれば、購入したその日からコストは止まります。
賢いハイブリッド戦略
どちらか一方を選ぶ必要はありません。最良の構成は両方を使うことです。
- 大容量分は上のライブ表で最安のTB単価のドライブを自分で所有する。
- 自宅で冗長化を組んで、1台壊れても大騒ぎしない体制にする。
- 本当にかけがえのないデータだけ、少量のクラウドをオフサイトバックアップとして使う。
これで安価な大容量ストレージとオフサイトの安全網の両方が手に入り、全TB分を毎月払う必要はなくなります。
結論
クラウドストレージが安いのは、少量データ、共有、常時同期が必要な場合に限られます。長期保存する大容量データなら、自分でドライブを買う方が圧倒的に有利で、サブスクリプションを払っていない月ごとにその差はさらに広がります。
上のTBあたりライブ価格を確認し、簡単な損益分岐計算をして、大容量データは自分で所有しましょう。安全のためのクラウドは少しだけ残しておけば、財布を圧迫し続ける永遠の請求書なしに、両方のいいとこ取りができます。
