HPE EVA Storage

Questions about P2000 G3 and iSCSI MPIO (8 Port Version) with MS iSCSI (2003)


Questions about P2000 G3 and iSCSI MPIO (8 Port Version) with MS iSCSI (2003)

Hi, I'm a bit confused about Configuration with iSCSI MPIO in Windows 2003.

As I coudn't find any Guildlines for a Configuration , which utilizes all Ports in two different Network Segments, I used the old MSA 2000 G1 Config here and scaled it up with using 2 Ports per Controller and Network Segment (see attached Overview).

The Host Ports have the following adresses:

Controller A Port 1
Controller A Port 2
Controller A Port 3
Controller A Port 4

Controller B Port 1
Controller B Port 2
Controller B Port 3
Controller B Port 4

There is only one server connected right now, which I use to check the Configuration (using Windows 2003 with MS iSCSI Initiator 2.08) and a added _all_ (is this correct ?) Host-Ports to discovery.

Then I logged on and tried to select the approperiate Source and Target IPs (just made sure they are in the same Subnet).

I now want to make sure, that both Ports on the Server are used. I had a look without changing anything in MPIO Config (thus it is 1 Path, Failover only) and way about 100MB/s Read and a Bit less write (all sequential to a 4-Drive Raid 10).

If I switch to Round-Robin, it used all Paths and the Speed broke down to a crawl. When I switch to Round-Robin with Subset and pick some Pathes, I can reach up to 200MB/s seq. Read (choosing all Pathes to Controller A, which hosts my vDisk in this case).

I now wonder how I set this up correctly.
Should I only add the IPs and Pathes to the Controller owning my vDisk or it is necessairy to add them all for Failover to work?

And does the Microsoft iSCSI-Initiator memorize, which Pathes are to be used after Failover/Reboot etc. ? If the wrong pathes are choosen, the Performance can break down to like 10%.

Maybe I also hafe a Configuration Error somewhere.

I also noticed, that now only one Target seems to be presented via the P2000 Unit; a MSA2000G1 had one for each Controller .. so my Configuration Overview is a bit incorrect.
Pedro Eleuterio
New Member

Re: Questions about P2000 G3 and iSCSI MPIO (8 Port Version) with MS iSCSI (2003)



I configured the 8 NIC just like you. Have you managed to activate Round Robin on Server iSCSI Initiator? It doesn't show up on my Server 2008, even after I installed MPIO, and configured everything on the manuals regarding Multipath.