Comments on: iSCSI 101: Setting up a simple iSCSI Storage Area Network

By: Free Registry Repair Tool

Free Registry Repair Tool — Fri, 21 Oct 2011 12:00:24 +0000

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By: Max Bash

Max Bash — Sat, 23 Jul 2011 14:35:23 +0000

Thanks for the guide, it is the easiest guide for a home setup, but I found it missing a step. After researching I found that on the Target I needed to modify /etc/iscsi/iscsid.conf and change the line node.startup = manual to node.startup = automatic

By: Kamal Maiti

Kamal Maiti — Sun, 30 Jan 2011 15:29:04 +0000

Nice article….much appreciated ..:)

One question : How will I view the data on the target machine since /root/fiftyGBFile will be target file there?

Thanks,
Kamal Maiti

By: Jonathan DePrizio

Jonathan DePrizio — Fri, 14 Jan 2011 12:12:30 +0000

Hi Rob,

That’s a good question and I’m honestly not sure. I suppose you could try appending to the file on the target side (from /dev/zero, for example). But if you want do that, I urge you to test it first before trying on any production system, since I’m not sure if it will work.

If you figure out a way, please let me know!

By: Jonathan DePrizio

Jonathan DePrizio — Fri, 14 Jan 2011 12:11:03 +0000

Hi Ahmad,

The iSCSI target and initiator drivers will “speak SCSI” to each other, and the iSCSI target driver is responsible for the next step. So yes, it will work – for example, you can even use a file as a iSCSI target device.

Thanks for your question!

By: Robert

Robert — Fri, 14 Jan 2011 07:49:23 +0000

Is there a way to add more space to a fileio lun? example i have lun 0 /path/to/500GBfile type=fileio and expand it to 600GB without having to take it offline? Any suggestions would be great.

Rob

By: Ahmad Mushtaq

Ahmad Mushtaq — Tue, 06 Apr 2010 21:34:49 +0000

Thanks dear… There’s another confusion… iSCSI is used to send SCSI commands over an IP network… What if a non-SCSI hard-disk is attached to the file-server? Will the file-server/non-SCSI storage device understand the SCSI commands?

Regards…

By: admin

admin — Tue, 06 Apr 2010 01:22:24 +0000

Hi Ahmad,

Great question! There are two primary types of physical layers for SAN environments; fibre channel, as you mention, and ethernet networks (e.g, gigabit). Fibre Channel SANs use the Fibre Channel protocol, while SAN environments that use gigabit networking typically use iSCSI. iSCSI allows you to use SCSI commands on an IP network. There is also Fibre Channel over Ethernet (abbreviated FCoE) which is another way to use gigabit networks as the backbone for a SAN.

If you are giving a SAN presentation, you should certainly cover all three: FC, iSCSI, and FCoE. These are the three major SAN technologies today.

By: Ahmad Mushtaq

Ahmad Mushtaq — Mon, 05 Apr 2010 21:42:06 +0000

Thank you very much! It will surely help me in preparing my presentation on SAN. But I’ve a confusion in mind… I’ve heard that SAN operates only over fiber networks… But according to your post, it works over GigaBit LANs too…How?

Thanks…

Regards…..

By: LUN Share

LUN Share — Tue, 17 Nov 2009 18:46:43 +0000

If could add few lines about sharing a LUN between two servers, that would have been a great help