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Questions tagged [mpio]

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3
votes
1answer
539 views

Standard vSwitch static LAG with iSCSI hardware initiators - impossible configuration?

In one site, we have vSphere hosts with 2 10G NICs. Both NICs are in one vSwitch failover policy IP Hash for static LAG (this is to balance/failover VM traffic) Both NICs (HPE 534FLR-SFP+/QLogic ...
3
votes
2answers
204 views

Link Aggregation Control Protocol or Multipath I/O

I am building a new sub-cluster, thereby I am facing few questions. Which technology is more efficient for "boosting throughput" ? (Will be great if you can provide any comparison) As far as I done ...
2
votes
2answers
450 views

Why is my iSCSI MPIO Setup not working?

I'm running Windows Server 2012 R2 and want to connect a Synology Rackstation via iSCSI to my server. The connection is done via four seperate LAN ports. The iSCSI part works fine, but if I copy stuff ...
5
votes
1answer
951 views

Connecting Freenas to Windows Server 2016 with MPIO

We recently had a Problem with the Raid Card in our Windows Server. We used this excuse to enlarge our storage Pool and implement a few other upgrades. The current Setup is: FreeNAS Server The ...
-1
votes
1answer
75 views

Race condition in active/active clusters

DM-Multipath document says that multipathd support active/active clusters with some policies such as round-robin. However, there is some racing problem in this kind of clusters. For example, assume ...
-1
votes
1answer
79 views

ISCSI, MPIO and Target-IPs

Today I played around with ISCSI, MPIO and performed some tests. Some went as expected, someothers delivered results I cannot explain. The Test-Environment was 2 virtual machines, named A and B. ...
0
votes
1answer
2k views

Windows Server 2012 NIC Teaming vs. MPIO [duplicate]

I've got a server with Windows Server 2012 R2 installed on it. 1 NIC on the server is used for management purposes and I've teamed the 3 other NICs which communicate with our SAN to carry out VM ...
3
votes
0answers
2k views

XenServer 6.5 iSCSI MPIO with point-to-point links (without a Switch)

I'm doing some experiment with iSCSI MPIO between FreeNAS 9.3 and two XenServer 6.5 hosts. I would like to use iSCSI MPIO to serve as VM storage. Pretty common environment, but without a switch to ...
3
votes
2answers
2k views

Hyper-V 2012 R2 - MPIO config error “Access Denied”

I am in the midst of migrating to a Hyper-V 2012 R2 cluster and am currently configuring the first host to connect to the iSCSI CSV via MPIO. I "think" I have everything working properly but when I ...
1
vote
2answers
652 views

Dell Equallogic PS5000E Multipathing Extension Module for VMware vSphere required even if storage is not presented to ESXi?

Single Dell Equallogic PS5000E array, fw 7.0.5, dual controller, NIC0 and NIC1 on each controller are on the iSCSI VLAN, NIC2 on each controller is on the management VLAN. VMware vSphere 5.5, ...
2
votes
3answers
11k views

How to use iSCSI MPIO to increase bandwidth with XenServer?

I have a FreeNAS Server with four network interfaces. The iSCSI traffic goes through two of those interfaces, and each interface has one IP address in a different subnet. As example: igb0: 192.168.10....
5
votes
1answer
534 views

Can SMB3 Multipathing be weighted by policy?

Consider a configuration with two identical WS2012R2 servers. Both have quad-port network boards. Each has one NIC connected to a subnet shared by other servers and ultimately accessible to client ...
1
vote
1answer
1k views

MPIO Issue With Server 2012 R2 iSCSI Target

The Setup. We just got 2 HP DL360 g6's Server 2012, running Hyper-V, server1 has an additional P800 controller for an MSA70 sas storage, and is hosting iscsi targets for hyper-v's on server 2. both ...
0
votes
1answer
588 views

Windows Server 2012 MPIO 30sec Time Delay

I build up one iSCSI with MPIO in my lab, attached is draft diagram. My MPIO may not configure as well, due to even though I set Round Robin in my Windows Server 2012 iSCSI manager, I still noticed ...
2
votes
0answers
1k views

How does Round robin policy of MPIO work in Windows 2008 R2

I have a Dell server with a 1G dual port iSCSI adapter. I have installed the NIC driver and using Microsoft iSCSI initiator, map few luns to both the ports and enable MPIO. The target I used was ...
0
votes
1answer
152 views

MPIO alike multipathing tool for Windows Server [closed]

We are looking for free multipath tool available for Windows Servers alike MPIO. Vendor specific multipath tool like Powerpath for EMC are license based and would like to evaluate different open ...
9
votes
1answer
1k views

Why MPIO instead of 802.3ad Team for iSCSI

Doing my first server to iSCSI target and I thought i would be off to a running start by teaming my NIC on the server (conventional 802.3ad team). However, from many online sources I see this is NOT ...
20
votes
3answers
109k views

What does “The IO operation at logical block address # for Disk # was retried.” mean when seen in the Windows Server System event log?

I have multipath IO configured server 2012 blade that shows warnings like the following during MPIO path failure: The IO operation at logical block address 0 for Disk 7 was retried. I know what is ...
1
vote
1answer
110 views

MPIO Linux Servers and switches

Good day, I have an UltraStor RS16IP4 ISCSI SAN and two Netgear GS748T switches. I'm looking to integrate MPIO (Multipath I/O) between my servers and the SAN. I'm somewhat new to MPIO and want to ...
3
votes
3answers
8k views

How to best tune Dell PowerVault MD3600i SAN/Initiators for best performance?

Recent owner of a Dell PowerVault MD3600i i'm experiencing some weird results. I have a dedicated 24x 10GbE Switch (PowerConnect 8024), setup to jumbo frames 9K. The MD3600 has 2 RAID controllers, ...
7
votes
1answer
12k views

Windows 2008 Unknown Disks

I have a BL460c G7 blade server with OS Windows 2008 R2 SP1. This is a brand new C7000 enclosure, with FlexFabric interconnects. I got my FC switches setup and zoned properly to our Clariion CX4, ...
1
vote
1answer
1k views

Enable MPIO in existing cluster without downtime

I have a 4 node Hyper-V cluster running on Windows 2008 R2. Prior to my tenure, the cluster had only single links to the SAN. I added redundant links but now I need to enable MPIO on all of the nodes. ...
2
votes
1answer
2k views

Win2K8 Server MPIO iSCSI failover not working

I have a desire to pass iSCSI traffic between my Windows 2K8 Server lab system and my NetApp filer across two separate network stacks*. My configuration is as follows: one Win2K8 server with the ...
2
votes
2answers
7k views

iSCSI initiator cannot remove session on boot drive

I'm very new to iSCSI so forgive me if I use the wrong terminology. I have two nics on my host with IP addresses that can see my iSCSI device (DELL MD3200 if it matters). We are booting the system ...
1
vote
3answers
10k views

Does MPIO aggregate bandwidth for a single connection?

Consider the following setup: Windows 2008 R2, MPIO feature installed. Two iSCSI NICs (not bonded), 1Gb each. Storage: Compellent, 2x 1Gb iSCSI ports, single controller. In my tests I have ...
0
votes
3answers
871 views

Teaming on Cisco Catalyst switch

Hopefully an easy one for someone... If I'm setting up either an MPIO or Team/bond on a Windows server, does a channel group need setting up on the Cisco Catalyst switches that they're connected to? ...
3
votes
1answer
2k views

iSCSI SAN - Network adapter bottleneck

My new database server (Windows Server 2008 R2) has a 4 Gbps connection to my Dell EqualLogic iSCSI SAN. I've been testing it by backing up multiple databases at the same time. There appears to be a ...