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如何在 AFF/FAS 系统中检测和管理接近其额定寿命的固态驱动器(SSD)

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适用于

  • 固态硬盘 (SSD)
  • AFF、AFX、ASA、FAS 系统

说明

  • 与硬盘驱动器 (HDD) 相比,固态硬盘 (SSD) 的寿命终止更具可预测性。
  • 在同一系统上同时部署的相同品牌和型号的 SSD 极有可能在同一时间达到使用寿命。
  • 当 SSD 达到额定寿命的 100% 时,它可能无法在长时间关闭电源时保留数据。
  • 处于此状态的 SSD 的数据丢失风险会增加。
  • ONTAP 包括某些事件管理系统 (EMS) 消息,以告知客户其 SSD 即将报废。

 
当 SSD 的额定寿命达到以下三 (3) 个阈值中的任何一个时,ONTAP 会生成事件:

  1. Rated life used >= 90% AND < 95%:shm.threshold.ratedLife
  2. Rated life used >= 95% AND < 100%:shm.threshold.ratedLife2
  3. 额定使用寿命 = 100%: shm.threshold.ratedLifeMax
  • 事件消息还根据过去的使用情况给出了每个 SSD 剩余额定寿命的估计周数。

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