{"id":25302,"date":"2024-06-09T17:04:53","date_gmt":"2024-06-09T08:04:53","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=25302"},"modified":"2024-06-09T17:04:53","modified_gmt":"2024-06-09T08:04:53","slug":"ssd-1tb%e6%95%85%e9%9a%9c","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=25302","title":{"rendered":"SSD 1TB\u6545\u969c"},"content":{"rendered":"\n

先日の落雷が原因と思われる停電の後，Raspberry Pi 4 Model B RAM 8GBが不調になりました．その後色々調べていたら，ROOTドライブにしていたBUFFALOの1TB SSD (USB3)がNGのようです．<\/p>\n\n\n\n

SSDはたいていドライブとケースを別に買って適当に入れていますが，この個体に限っては，BAFFALOのSSD組み込み済みの “USB-3外付けSSDドライブ” を買ったようです．<\/p>\n\n\n\n

組み込み済みと言ってもケースを開けると，SATA-USB変換基板(以下 “IF” )にSSDがつながっているので，別々に買うものと何ら違いはありません．<\/p>\n\n\n\n

いろいろ試してわかったのは，連続して書き込むと反応がなくなる1<\/a><\/sup>もしくは “Device I\/O error” を起こす．<\/span>ことです．その際SSDはSATAコネクターに近い部分がかなり発熱しています．<\/p>\n\n\n\n

今日は少し時間をかけてSSDとIFを別々に正常と思われる他のものと組み合わせて数十GBのデータの連続書き込みをしてみました．<\/p>\n\n\n\n

結果として，SSD本体は書き込みが止まる事態が再現できます．一方IFは正常と思われる他のSSDに繋いで書き込みをしてもエラーにならず，高速に書き込めます2<\/a><\/sup>IFについてその後もテストを続けていますが，どうも連続書き込みをすると書き込みが止まります．エラーにはならず昔のSSDの “プチフリーズ” のようです．<\/span>．<\/p>\n\n\n\n

ということで，BUFFALOの1TBのSSDの故障と断定しました．<\/p>\n\n\n\n

このトラブルは停電に伴うディスク交換作業で発覚したものの，実は以前から起きていたのではないかと推測しています．<\/p>\n\n\n\n

少なくとも筆者の使用環境では，実用運転で数十GBのデータを連続して書き込むようなこと3<\/a><\/sup>読み出すようなことも😅<\/span>は日常的には起こりません．<\/p>\n\n\n\n

ということで，BUFFALOブランドのSSDが内蔵されているドライブは今後買わないことにします．<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"

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