FAQ: Questions and Answers about the Drive Inspection Feature
FAQ: ドライブ検査機能に関する質問と回答

Q1, Is the data preserved?
Q1, データは温存されますか?

There is no impact on the data.

Q2, Is there a risk of data loss?
Q2, データ損失のリスクはありますか?

There is no risk at all. All inspections are conducted with “Data Preservation” in mind.

Q3, Bad sectors have been detected. Should I replace the drive immediately?
Q3, 不良セクタが検出されました。すぐにドライブを交換すべきですか?

It depends on the type (color) of the bad sector. If the bad sector block is yellow, there is some leeway. If it is purple, there is a higher chance of it turning into a dangerous sector (red), so we recommend replacing it within a few days. In the case of red (dangerous sector), the drive could fail at any time, so please replace it immediately. A count of 0 bad sectors is normal. If there is even one, the drive needs to be replaced.

Q4, ヘリウム充填ハードドライブを購入しました。ここでテストできますか?
Q4, I purchased a helium-filled hard drive. Can it be tested here?

There is no problem. We support testing for helium-filled hard drives.

Q5, The bad sector simulation sometimes stops and gives a normal reading. Why is that?
Q5, 不良セクタシミュレーションは時々停止し、正常な読み取りを示します。なぜですか?

This feature was developed as an aid to full scanning. It measures the characteristics of the data reading side (head). If a certain level of stability is confirmed, it is considered normal. After understanding the condition of the platter with a full scan, the bad sector simulation examines the characteristics of the data reading side (head). Even if it turns out ‘normal’ midway, it’s because it has already been investigated in the full scan and doesn’t require further examination.

Q6, Can the bad sector simulation be sped up?
Q6, 不良セクタシミュレーションをスピードアップできますか?

It is difficult to shorten the process further as each sector is inspected multiple times.

Q7, I heard that millisecond testing is for the file system. Does the accuracy decrease if there are fewer files?
Q7, ミリ秒検査はファイルシステム向けと聞きました。ファイルが少ない場合、精度は低下しますか?

Yes. When there are fewer files, the number of test subjects decreases, thus reducing accuracy. Millisecond testing assumes the presence of a certain number of files (more than 50,000 files). For drives containing important data, it’s expected to have this number of files.