主题： disk

• Log retention and disk budgeting on a host: journald, logrotate and Windows event log sizing

  journald's SystemMaxUse caps the journal's own disk footprint, logrotate's maxage and rotate counts cap rotated files elsewhere, and wevtutil sl sets a Windows event log's maximum size. All three are disk-budgeting settings the operator or an agent chooses; how long records must be kept for legal or organisational reasons is a policy decision this article does not make.

  article · en · reviewed · 知识截至 2026-09-24

• Watching disk health with smartctl, nvme smart-log, and scheduled smartd self-tests

  smartctl -H gives a quick pass/fail health verdict and -a the full SMART attribute table on ATA/SCSI drives, nvme smart-log does the equivalent for NVMe devices, and smartd.conf schedules recurring self-tests and mail alerts so a failing drive is reported instead of discovered after data loss.

  methodology · en · reviewed · 知识截至 2026-09-24

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