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What is the default "rsize” value for ONTAP to be available during negotiation

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ontap-9
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nas
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Applies to

  • ONTAP 9
  • NFS
  • SAMBA

Answer

  • "rsize" determine how much data is sent between the client and server for each packet sent.
  • Newer NFS clients autonegotiate the wsize and rsize values to what the -tcp-max-xfer-size value is set to on the ONTAP NFS server, if the mount command does not explicitly set the values.
  • ONTAP defaults -tcp-max-xfer-size to 64K and can be set to a maximum of 1MB.
  • By default, rsize and wsize value negotiated by ONTAP is 65536 when using SAMBA clients with Large MTU disabled. With large MTU enabled, rsize and wsize value negotiated is 1 MB.

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