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如何计算 SnapMirror/SnapVault 吞吐量以提高性能

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适用场景

  • ONTAP 9
  • Data ONTAP 7-模式

问题描述

  • 在从内部存储向Cloud Volumes ONTAP进行SnapMirror迁移期间、没有内置工具来衡量和监控SnapMirror吞吐量或获取网络性能
    • 如果您正在寻找可执行此操作的应用程序、请联系您的销售经理并请求 有关数据管理应用程序的信息
      • 可以 根据 在 设定时间段内移动的数据量来确定某个关系的吞吐量
  • 使用以下命令收集所需的SnapMirror信息:
    • 要确定吞吐量, 需要注意的字段为  Transfer Size 和  Transfer Duration
    •  通过将除 Transfer Size 以来查找吞吐量  Transfer Duration

ONTAP 9

  • snapmirror show -instance 命令可用于列出 Last Transfer SizeLast Transfer Duration

Destination Cluster::> snapmirror show -instance -destination-path <svm:Volume>

DestinationCluster::> snapmirror show -fields last-transfer-size,last-transfer-duration,last-transfer-end-timestamp [-destination-path]

source-path destination-path last-transfer-size last-transfer-duration last-transfer-end-timestamp
----------- ---------------- ------------------ ---------------------- ---------------------------
SVM1:test   SVM1:SMTest     4.31MB            0:0:3                 "01/09 13:09:52"
1 entries were displayed.

  • 此输出将显示 Last Transfer Size 和、 Last Transfer Duration 您可以使用这些来计算上次传输吞吐量
  • 实时分析吞吐量
  • 可以使用上述命令测量实时SnapMirror传输的吞吐量性能。 
    • 运行 snapmirror show 一次命令以查看总进度。
    • 请等待一段时间、然后 snapmirror show 重新运行。
    • 使用 每个输出的"Total Progress (总进度)"列、 从 第二个 输出中减去第一个输出。
    • 将其余部分除以两个命令之间的时间量。
    • 这将  估算传输的吞吐量。
    • 示例
      • snapmirror show 上述示例中的命令 间隔运行3分钟、 即 持续时间为3分钟。

如何计算SnapMirror或SnapVault的性能吞吐量

Data ONTAP 7模式
Destination> snapmirror status -l [ ]
或 
Destination> snapvault status -l [ ]

Snapmirror is on.

Source:                 Source:vol1
Destination:            Destination:vol1_mirror
Status:                 Idle
Progress:               -
State:                  snapmirrored
Lag:                    00:34:03
Mirror Timestamp:       Tue Sep 20 13:28:34 CEST 2016
Base Snapshot:          Source(012345678)_vol1.1
Current Transfer Type:  -
Current Transfer Error: -
Contents:               -
Last Transfer Type:     Update
Last Transfer Size:     4800 KB
Last Transfer Duration: 00:00:45
Last Transfer From:     Source :vol1

此输出将显示  Last Transfer Size 和、  Last Transfer Duration 您可以使用这些来计算上次传输吞吐量。

 

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