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iSCSI target vs. Samba vs. NFS share for storing backup files over the network

jjoz
jjoz asked
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Last Modified: 2012-05-10
Hi All,

I'd like to know which one is the fastest transfer / throughput rate across the network for the file sharing ?

I'm trying to create some more datastore for storing the very large backup to disk files.

so I'm now considering between running the following over the network:

Ubuntu Server + Samba
Openfiler + iSCSI target (never try this before).

all of those will be over the gigabit network.

Thanks.
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Commented:
the shared network drive will be mainly used by Windows Server 2003
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Commented:
The question should start based on the destination supported by the backup & restore software i.e. can the software read/write from a mapped drive (samba/NFS)? Or does the software need to use a "local drive" (iscsi).
iscsi sends SCSI commands over Ethernet and depends on which option you choose when configuring the iscsi lun. blockio or fileio (preferred)
https://forums.openfiler.com/viewtopic.php?id=1846

samba/nfs has a lower overhead and would likely be faster.

Author

Commented:
thanks for the reply arnold, so for large sequential file transfer using samba over the network is better compares to iSCSI ?
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Author

Commented:
Guys, thanks for the suggestion,
It seems that iSCSI is the fastest when configured properly with the following parameters in the Openfiler VM:

R/W Mode: Write-thru
Transfer Mode: blockio

am I doing it right ?
iSCSI-BlockIO-WriteThru.jpg
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Commented:
The settings you've choosen should be fine.
I've not checked whether the write back is  a better performing setting.

Author

Commented:
thanks man !

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