{"id":8540,"date":"2018-08-02T12:57:47","date_gmt":"2018-08-02T03:57:47","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=8540"},"modified":"2018-08-02T12:57:47","modified_gmt":"2018-08-02T03:57:47","slug":"%e3%83%9e%e3%82%af%e3%83%89%e3%83%9f%e3%83%8b%e3%83%88%e3%83%a9%e3%83%96%e3%82%8b2%e4%be%9d%e7%84%b6%e5%8e%9f%e5%9b%a0%e7%89%b9%e5%ae%9a%e3%81%a7%e3%81%8d%e3%81%9a","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=8540","title":{"rendered":"\u30de\u30af\u30c9\u30df\u30cb\u30c8\u30e9\u30d6\u308b(2) SSD\u306e\u6545\u969c\u304b"},"content":{"rendered":"

今回のMac mini（以下マクドmini1<\/a><\/sup>関東では「マック」，関西やフランスでは「マクド」<\/span>）のトラブル<\/a>で，結果的に^^; 対処した方法は，内蔵していたSSD（便宜上SSD1と呼びます）とこれまでときどきクローニングしてきた外付けのSSD（SSD2）を交換しました．同じタイプのものです．これでとりあえず不具合はありません．<\/p>\n

取り外したSSD1は，USB3エンクロージャーに入れて，別のマクドのDisk Utilityで検証すると異常なしと出ますが，新たに内蔵したSSD2の内容をCarbon Copy Clonerでコピーしようとする2<\/a><\/sup>いつも行っているバックアップ作業のひとつ<\/span>と，ひとつのVMのディスクイメージのコピーに時間がかかり先に進みません．しかし，エラーも出ません．<\/p>\n

ということで，SSD1が，読み出しは正常だけれど書き込みが異常（エラーは出ないけど書き込みに異常に時間がかかる），ということで説明がつくと思いました．<\/p>\n

それで，最終的に確認するために，これまでとは別のUSB3エンクロージャーに入れて，別のマクドで大量の書き込み（Carbon Copy Clonerによるクローニング）を実施したところ，やはりコピーはエラーなく進むけど，とてもSSDのスピードではありません．<\/p>\n

こういう壊れかたってあるんでしょうか．<\/p>\n","protected":false},"excerpt":{"rendered":"

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