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Why E-Series volume expansion for one volume when using  Volume Group is very slow ?

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Applies to

  • Netapp E-Series
  • Volume Group

Answer

Adding capacity to  a volume when using traditional Volume Group instead of Disk Pools can take long time depending of which volume is expanded:
  • If  the expansion is for volume A for example, the new blocks have to be contiguous in traditional Volume Group, so the system will need to reallocate volumes B, C and D to make space for A to grow.
  • If the expansion is for the last volume with contiguous free space, then the system would not need to reallocate the rest.

volume_increase.png

Additional Information

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.
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