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NICs in NAS systems

EXPERT RESPONSE FROM: Randy Kerns

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QUESTION POSED ON: 11 July 2006
Is it typical, when using a network attached storage (NAS) appliance, that a host/server would have 2xNICs installed? One connected to the standard LAN and another connected to an Ethernet switch for IP SAN access?

EXPERT RESPONSE
It is very common to have a NIC for the standard LAN and another for storage -- whether it is for file access to a NAS device using NFS or CIFS or for block access using iSCSI. A single NIC could be used for both, but for performance reasons a separate segment or network is used in many cases.

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How to establish NAS checkpoints for NFS and CIFS systems?

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