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How does Snapshot work in HDS VSP G1000 ?

Question asked by Mostafa Sadat on May 12, 2019
Latest reply on May 13, 2019 by John McDevitt

Hi Guys,


I've got few questions regarding HDS Snapshot technology in VSP G1000 and i would really appreciate if you guys could help me with answering the following questions:

  • When snapshot is created is there any pause in IO?
  • Where is the snapshot kept?
  • How does HDS manage new writes and when snapshot is deleted is there any impact of the writes being committed?
  • Any risk on growth of change blocks?
  • How long can the snapshot be kept for?
  • How does HDS manage application aware snapshot? Like snapshotting a SQL LUN. Does it cause any impact on the SQL front?