Thursday, December 8, 2011

Pluggable Storage Architecture (PSA)

  1. a special VMkernel layer
  2. VMP (NMP by default VMware NMP, a generic Multipathing Plugin)
  3. SATP + PSP
  • Manage physical path claiming and unclaiming
  • Register and de-register logical devices
  • Associates physical path with logical devices
  • Processes I/O requests to logical devices (optimal physical  path for the requests - load balance; fail-over )
  • abort or reset logical devices

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