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Summary



HowTo SnapMirror seeding using a mobile NetApp Storage Unit

Step By Step



SnapMirror Seeding - Using a Mobile NetApp Storage Controller

Introduction

The following procedure outlines the steps to use a mobile or temporary NetApp Storage Unit to seed a source filer’s volume at a local site to a destination filer’s volume at a remote site. Once the initial base backup of the NSB client runs, a SnapMirror initialize initiates from the temporary filer to create a SnapMirror relationship between the temporary and source filer’s volume. The temporary filer is then transported from the local site to a remote site. Another SnapMirror initialize initiates from the destination filer to create a SnapMirror relationship between the destination and temporary filer’s volume. Afterwards, a SnapMirror resync initializes from the destination filer to resynchronize the SnapMirror relationship between the destination filer’s volume and source filer’s volume.
 
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Volume Creation Prerequisites

Before performing the procedure below, the following volumes were created to their respective filers:
  • Source filer:  srcFiler
  • Temporary filer: tmpFiler
  • Destination filer: dstFiler
  • Source filer’s volume: srcVol
  • Temporary filer’s volume: tmpVol
  • Destination filer’s volume: dstVol

 

Procedure

  1. Run an initial base backup of a NSB client to the source filer’s volume, srcVol.
  2. Create a SnapMirror relationship between the source filer’s volume, srcVol, and temporary filer’s volume, tmpVol.
    1. Putty into the temporary filer.
    2. vol restrict tmpVol
    3. snapmirror initialize  –S srcFiler:srcVol  tmpFiler:tmpVol
  3. Once data transfer completes, break SnapMirror between the source filer’s volume, srcVol, and temporary filer’s volume, tmpVol.
    1. Putty into the temporary filer.
    2. snapmirror break tmpFiler:tmpVol      
  4. Transport the temporary filer from the local site to the remote site.
  5. Create a SnapMirror relationship between the temporary filer’s volume, tmpVol and destination filer’s volume, dstVol.
    1. Putty into the destination filer.
    2. vol restrict dstVol
    3. snapmirror initialize  –S tmpFiler:tmpVol  dstFiler:dstVol
  6. Once data transfer completes, break the SnapMirror relationship between the temporary filer’s volume, tmpVol and destination filer’s volume, dstVol.
    1. Putty into the destination filer.
    2. snapmirror break dstFiler:dstVol         
  7. Create a SnapMirror relationship between the source filer’s volume, srcVol, and destination filer’s volume, dstVol.     
    1. Putty into the destination filer.
    2. Edit /etc/snapmirror.conf      
    3. Add the following entry: srcFiler:srcVol dstFiler:dstVol - * * * *
  8. Restart SnapMirror.
    1. Putty into the destination filer.
    2. snapmirror off
    3. snapmirror on      
  9. Break the Snapmirror relationship between the source filer’s volume, srcVol, and destination filer’s volume, dstVol, if SnapMirror for two volumes is not in a Broken-off state.
    1. Putty into the destination filer.
    2. snapmirror break dstFiler:dstVol  
  10. Resynchronize SnapMirror between the source filer’s volume, srcVol, and destination filer’s volume, dstVol.
    1. Putty into the destination filer.
    2. snapmirror resync  –S srcFiler:srcVol dstFiler:dstVol
  11. Delete the SnapMirror relationship between the source filer’s volume, srcVol, and temporary filer’s volume, tmpVol.