跳转到主内容

在后台扫描程序运行时创建快照会产生什么影响?

Views:
4
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
core
Last Updated:

适用场景

  • ONTAP 9
  • Snapshot

问题解答

唯一的影响是,由于块在 Snapshot 中被锁定,节省的空间会更少。这随工作负载的不同而有所不同,具体取决于卷上的数据类型。

例如,如果希望在迁移期间主要看到新的写入和 / 或读取,则 Snapshot 不会很大。但是,如果预期在迁移期间相同的文件会收到大量修改 / 覆盖,则预期会看到较大的 Snapshot 。

volume efficiency start -scan-old-data通过使用命令,可以为重复数据删除节省更多空间,因为效率操作会同时扫描活动文件系统和快照中的块。

如果在运行卷效率后台扫描程序期间必须具有 Snapshot ,则:

1. 从知识库文章 Howto maximize storage efficiency on all Flash FAS systems running ONTAP 9.x 的第 4 步开始运行初始扫描

2. 使用监控进度 volume efficiency show。初始扫描所需时间最长。

3. 检查自步骤 1 以来创建的快照。删除后,重新运行命令。

 

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.