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SQL 集群间歇性丢失与 iSCSI LUN 的连接

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Category:
ontap-9
Specialty:
san
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适用场景

  • ONTAP 9
  • iSCSI
  • SAN

问题描述

  • SQL 集群间歇性丢失与 iSCSI LUN 的连接
  • Windows 服务器报告以下事件:
    •  事件 ID 9001
      数据库日志已脱机。通常,这表示发生灾难性故障,需要重新启动数据库。

    • 发生事件 ID 17053
      通用操作系统错误。不清楚生成的状态。

    • 事件 ID 833
      此消息指示 SQL Server 已从磁盘发出读取或写入请求,并且返回请求所用时间超过 15 秒。此错误由 SQL Server 报告,表示 I/O 子系统存在问题。您可能还会注意到与此消息相关的其他症状: PAGEIOLATCH 等待时间较长,系统事件日志中出现警告或错误,系统监控器计数器中显示磁盘延迟问题。监控 sys.dm_io_virtual_file_stats 并为存储吞吐量选择适当的存储层和 IOPS 。

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