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Forum Discussion
Maximum simultaneous iSCSI connections on the 2100?
We are looking at setting up a Windows Server 2008 R2 SP1 Hyper-V cluster with 6 nodes, using a number of ReadyNAS 2100 devices for iSCSI storage.
Given that each node will have an iSCSI connection to every LUN used for clustering for every path, we need to know the upper limit per device for simultaneous iSCSI connections (global and per-target).
We have been unable to find this information in the documentation, firmware update notes or searching the support forums.
We need this information to know how to carve up the disks, as 12TB RAID5 disks would give ~9TB usable space.
For example, if we carved this up as 100GB LUNs, that would be 90 iSCSI targets, leading to 540 iSCSI connections from the cluster (before MPIO).
Has anyone hit an upper limit for the number of nodes in a cluster, or iSCSI targets used by a cluster due to a connection limit, or knows what the limit is?
Given that each node will have an iSCSI connection to every LUN used for clustering for every path, we need to know the upper limit per device for simultaneous iSCSI connections (global and per-target).
We have been unable to find this information in the documentation, firmware update notes or searching the support forums.
We need this information to know how to carve up the disks, as 12TB RAID5 disks would give ~9TB usable space.
For example, if we carved this up as 100GB LUNs, that would be 90 iSCSI targets, leading to 540 iSCSI connections from the cluster (before MPIO).
Has anyone hit an upper limit for the number of nodes in a cluster, or iSCSI targets used by a cluster due to a connection limit, or knows what the limit is?
1 Reply
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- No limit on number of connections to the system(well, eventually depending on your use you're going to run into performance limitations), and 16 sessions per target. If each of your 6 nodes is using 2 connections for MPIO, you'd be using 12 of the 16 per target and still have some headroom.
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