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Questions tagged [iscsi]

iSCSI - SCSI over IP - mount disks across the network

iSCSI is Internet Small Computer Systems Interface, and is a standard for sending SCSI commands across the IP layer of the TCP/IP suite.

Unlike ATA over Ethernet, (ATAoE) iSCSI allows you to use the same network link for mounting remote storage as well as communicating with the rest of the network.

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Configuring HP "Multifunction" NIC for iSCSI SAN

I am about to implement a SAN here using a HP P2000; the SAN itself is on-order (ETA a couple of weeks) so in the meantime I'm getting the rest of the equipment up and running. The SAN has dual-controllers and I'm going to multipath the whole setup.…
fukawi2
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Esxi with iSCSI SAN slows down with many multiple VMs running

I have a server with ESXi 5 and iSCSI attached network storage(4x1Tb Raid-Z on freenas). Those two machines are connected to each other with Gigabit ethernet, and a procurve switch in between. After a while, if I have many(4-5 or more) vms running,…
Esa Varemo
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Dedicated NIC or dedicated port for iSCSI?

When spec'ing and configuring a machine that will utilise shared iSCSI storage, I've read a lot of documentation which suggests a dedicated network adapter should be used for iSCSI communication. That makes a lot of sense and I have no problem with…
dbr
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Recover NTFS data from a ZFS pool that was exposed as an iSCSI target

This was me being stupid and the data is by no means critical and is now a learning experience first, time saver second. I set up a 100GB iSCSI target via the bare bone instructions in napp-it. It's a volume LU. I then had my Windows 7 machine…
David
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What are some shared-disk filesystems people have successfully used with iSCSI?

The setup looks something like this. The goal is to have multiple computers mount a single LUN from the iSCSI target. Ideally mounting read/write and with ACL support. The servers are running GNU/Linux, so preferably a filesystem available in the…
Pablo Maurin
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Mixing SAN iSCSI Traffic with core network traffic, Am I asking for trouble?

I am configuring a new network and had a couple questions I am finding hard to find good answers about best practices on using VLANs to separate Core network traffic and iSCSI traffic. The switches for the core network are a Cisco 24 port 3560X…
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Practical SAN Question

I am designing the next evolution of our IT infrastructure. I am considering implementing an iSCSI SAN. My current plan is to connect only our servers to the SAN, and then implement any file sharing to the desktops via network shares using one of…
Loren Charnley
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Why is my MPIO connection to the SAN capped at 1 Gbps when using Linux?

I'm connecting a RHEL5 box to a Dell EqualLogic PS5000X and seeing a maximum of 1 Gbps even while using MPIO with three gigabit NICs. I have all three interfaces on the PS5000X and three dedicated iSCSI interfaces on the server connected to the same…
Austin Lundeby
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Is iSCSI SAN still a spof in a cluster? Can it be highly available?

I'm currently evaluating a Win2k8 two node file server cluster that is connected to a Win2k8 Storage Server iSCSI SAN. The failover is working perfectly, but I'm now wondering what will happen if the iSCSI SAN box falls over. Is there a way to make…
Andrew
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What are the choices for iSCSI target support for Linux?

I recently purchased an IBM BladeCenter E chassis with HS21 blades. I'd like to build a SAN so the HS21 blades will have more storage space. From everything I've read, iSCSI seems to be the best choice for a cheap SAN. I can't afford Fibre Channel,…
shapr
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ESX hosts lose connectivity with iSCSI SAN LUNs

I've been experiencing this issue for a couple of months now where my ESX hosts lose connectivity with my iSCSI SAN vmfs volumes. As a results the ESX hosts enter a nonresponsive mode the associated VMs disconnect and the only remedy is to reboot…
Themist
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How to use targetcli to disable iSCSI write cache

I have exported a single disk as an iSCSI target using targetcli on a Linux host. On a remote machine I have connected to the device, and placed a ZFS volume on it (as a replication target with zrepl). However any time I reboot the iSCSI target…
Malvineous
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max iSCSI initiator session

what is iSCSI initiator session limit ? and is there anyway to exceed this limit ? i'm working on windows server also in this documentation https://docs.microsoft.com/en-us/windows-server/storage/iscsi/iscsi-target-server-limits ..... what's…
User..
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Windows Server 2019 iScsi MPIO multiple targets

I'm looking to setup a Windows Server 2019 failover cluster with iScsi shared storage (for a SQL Server Always-On instance). The additional requirement is to not have a single point of failure. Let's say I have two iScsi Initiator nodes A and B and…
VBStarr
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"Bad message" with a new SAN using multipath and iSCSI

I'm configuring a new SAN for a set of Ubuntu 18.04-based servers. Each of nodes can mount the ext4 formatted partition fine. Being new to both multipath and iSCSI, I'm not sure if what I'm seeing is "normal". I'm having two problems so far. When…
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