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xen-users
Re: [Xen-users] Xen and iSCSI
Javier Guerra wrote:
(snip) iSCSI is a
complex protocol, and t needs a lot of help from the NIC to be competitive
with other forms of SAN. that's why you see iSCSI cards from Adaptec and
Intel. those cards look like regular SCSI hardware (i think the Adaptec
cards might even use the same driver for SCSI and iSCSI)
There are dissenting opinions on this. Excerpt from
http://en.wikipedia.org/wiki/ISCSI :
"In fact, in modern high-performance servers, a plain NIC with efficient
network driver code can outperform a TOE card because fewer interrupts
<http://en.wikipedia.org/wiki/Interrupt> and DMA
<http://en.wikipedia.org/wiki/Direct_memory_access> memory transfers are
required."
Regards,
Dan.
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