Iscsi Initiator - Multipathing
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Thursday, April 26, 2012 3:31 PM
Guys,
I have set up a Hyper-V Clustter with MD3000 i (4 Iscsi ports) - need some advise/help with setting up the multipathing, MPIO and DSM is installed on two servers
4 Iscsi ports (Targets) on MD3000i
10.0.2.1 (Controller 0, Port 0)
10.0.3.1 (Controller 0, Port 1)
10.0.2.2 (Controller 1, Port 0)
10.0.3.2 (Controller 1, Port 1)
--
IP address on 1st server
10.0.2.21
10.0.2.22
IP On second server
10.0.3.31
10.0.3.32
I can add the portal via 10.0.2.21 & 10.0.2.22 (so all works) - disks appear
same for the second server,
How do i set up mulipathing and where do i confirm that it is working?
Can some do a step by step? please?
All Replies
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Thursday, April 26, 2012 4:01 PMModerator Hi,
On your 1st server and 2nd server, it is recommended that you put the network adapter for iSCSI in different VLAN or subnet.
By the way, you can check the following guides.
Configuring iSCSI MPIO on Windows Server 2008 R2 (full)
http://blogs.technet.com/b/migreene/archive/2009/08/29/3277914.aspx
- Marked As Answer by Vincent HuModerator Tuesday, May 01, 2012 7:00 AM
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Friday, April 27, 2012 12:34 AM
I was in the same situation as you, 2 Dell Hyper V servers and connect them to a MD3000i SAN:
4 Iscsi ports (Targets) on MD3000i
10.0.2.1 (Controller 0, Port 0)
10.0.3.1 (Controller 0, Port 1)
10.0.2.2 (Controller 1, Port 0)
10.0.3.2 (Controller 1, Port 1)
I would used Core configurator on each Hyper V server and configure:
IP address SAN on 1st server
10.0.2.21
10.0.3.21
IP SAN On second server
10.0.2.31
10.0.3.31
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Friday, April 27, 2012 8:41 AM
Guys,
I have set up a Hyper-V Clustter with MD3000 i (4 Iscsi ports) - need some advise/help with setting up the multipathing, MPIO and DSM is installed on two servers
4 Iscsi ports (Targets) on MD3000i
10.0.2.1 (Controller 0, Port 0)
10.0.3.1 (Controller 0, Port 1)
10.0.2.2 (Controller 1, Port 0)
10.0.3.2 (Controller 1, Port 1)
--
IP address on 1st server
10.0.2.21
10.0.2.22
IP On second server
10.0.3.31
10.0.3.32
I can add the portal via 10.0.2.21 & 10.0.2.22 (so all works) - disks appear
same for the second server,
How do i set up mulipathing and where do i confirm that it is working?
Can some do a step by step? please?
If you have 4 ports you really need to have 4 NICs on your client (can go with say 2 switches for redundancy as there's no need to multiply every component). In such a case you'd take care of both performance and redundancy MPIO provides. After you'll configure MPIO (Vincent was kind enough to provide a link, you can also check initiator manual) you can test redundancy by physiscally disconnecting patch cords from server (any port, target or initiator does not matter), powering off the switch (one of them if you have two) and performance by configuring very fast test iSCSI LUN (RAM-based if your target allows or RAID0 of SSDs - just to saturate 400-500MB/sec link you now have aggregated) and running Intel I/O Meter with 8-64 request queue against it.
-nismo
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Friday, May 04, 2012 3:50 PM
I was in the same situation as you, 2 Dell Hyper V servers and connect them to a MD3000i SAN:
4 Iscsi ports (Targets) on MD3000i
10.0.2.1 (Controller 0, Port 0)
10.0.3.1 (Controller 0, Port 1)
10.0.2.2 (Controller 1, Port 0)
10.0.3.2 (Controller 1, Port 1)
I would used Core configurator on each Hyper V server and configure:
IP address SAN on 1st server
10.0.2.21
10.0.3.21
IP SAN On second server
10.0.2.31
10.0.3.31
Just to add more to this.
If you don't want to do connections manually, Download the MD3000i DVD ISO.
DELL_MDSS_Consolidated_RDVD_3_0_0_18_A00_R314542
Uncompress and just copy the windows folder to your Hyper V host.
Run mdss_install.exe. Server will require a restart.
Install drivers for Host (Core Software-Host) only, avoid installing any providers, like VSS and similars.
Select the SAN model. MD3000i in your case.
Select to run the wizard after the restart.
Select “Configure Host”
Select “Discover via iSCSI port”
Put the IP address for the MD3000i SAN
Select CHAP Configuration, or not, depends on what you have, just click Next.
Ports will be configured automatically. See next image:
Do the same if you have Controller 1.
Good luck!
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