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請問HDS儲存設備裡的shadowImage功能是什麼?

每個Storage廠商對data service的命名都會有些許不同。
HDS中Thin Image是snapshot,那請問shadowImage代表什麼呢?

1 個回答

6
godspeedyen
iT邦新手 3 級 ‧ 2014-03-02 03:46:21
最佳解答

就HDS官方文件解釋為:replication/mirror
主要功能如下:

  1. Uses local mirroring technology to create and maintain a full copy of any volume in the storage system.
  2. Create one or more copies of a data volume within the same storage system.
  3. Use ShadowImage copies as backups, with secondary host applications, for data mining, for testing, and other uses — while business operations continue without stopping host application I/O to the production volume.
  4. Enables nearly instant point-in-time recovery from data corruption or data loss compared to non-disk based solutions such as tape- or vault-based recovery

以上皆由Hitachi官方所釋出的[]ShadowImage® User Guide](http://www.hds.com/assets/pdf/vsp-hitachi-shadowimage-user-guide.pdf)截取,希望有解決樓主您的疑惑![拍手](/images/emoticon/emoticon34.gif)

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