iSCSI - SCSI over IP - mount disks across the network

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1k views

Unable to discover iSCSI targets

I have a trio of CentOS 6.4 machines that I'm trying to configure to use iSCSI. Basically two different initiators talking to two different targets on a single host server. On one machine, "the ...
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384 views

Broadcom BCM57810 iSCSI offload performance

Anyone out there doing iSCSI offloading using Broadcom BCM57810 10 gigabit ethernet cards? My test scenario Network.... 2 x Dell Force 10 S4810 switches Client.... Dell R620 24 core 128gb memory ...
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425 views

Windows Server 2012 - Hyper-V - iSCSI SAN - All Hyper-V Guests stops responding and extensive disk read/write

We have a problem with one of our deployments of Windows Server 2012 Hyper-V with a 2 node cluster connected to a iSCSI SAN. Our Problem Our problem is that for some reason all of the VMs stops ...
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226 views

Booting a diskless Debian system using bonding, bridging, and iSCSI

I'm trying to build my personal holy grail: booting my Debian Wheezy KVM server diskless from a iSCSI target and the only configuration needed on the diskless server is the iSCSI parameters in the NIC ...
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216 views

How to enable disk cache again after enabling iSCSI in Windows Server 2012?

I create an iSCSI Virtual Disk and a corresponding target. This enables the cache bypass flag on the volume. After I remove the iSCSI disk, the flag doesn't get reset. Anyone can help me to reset ...
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381 views

iscsi disk over 2 TB cant initialized

I have a windows server 2012 x64. I'm free to connect and initialize the disks smaller than 2 TB. I can connect more than 2 TB disk but I can't initialize it? Windows can not determine its size, the ...
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687 views

Trying to boot a diskless server to Windows 2012 using iSCSI and Differencing VHDs

We are in the middle of a big VMware to Hyper-V migration at the moment. Part of this process is going to be changing some of our existing ESXi servers to Hyper-V. These ESXi servers don't have hard ...
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3k views

iSCSI issue; “the media is write protected”

i've got some serious issues with w2k8 r2 standard and iSCSI controller. i'm running dell server, connected via ethernet to synergy NAS, which is handling LUN via iSCSI. i'm using ms iSCSI initiator ...
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1k views

Volume manager of Windows Server 2008 R2 does not show all iSCSI volumes

we set up a backup server (Win2k8 r2) for our VMware infrastructure which uses an iSCSI SAN for storage. The backup server has to be connected to the SAN for Veeam to be able to backup virtual ...
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563 views

FreeBSD istgt - how to limit iscsi target discoverability to IP address

How can I setup an ISCSI target that is only visible to a certain IP address? For example, if a client runs iscsiadm discover from 10.1.1.130, I only want target iqn.2011-03.domain.org.istgt.ded130 ...
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34 views

Can't mount read-write iSCSI with MTU=9000

I'm attempting to connect my desktop (running debian 7) to a QNAP NAS (running QTS 4.1.1) using iSCSI with an MTU=9000. The network infrastructure consists of a cat5e crossover cable between the ...
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26 views

Running iSCSI LIO with high availability

I've build a two node storage setup with OCFS on top of DRBD to provide storage for a couple of ESXi servers. Will it be possible to setup iSCSI targets on both storage nodes and make one of the nodes ...
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36 views

iSNS Best Practices

I am looking into deploying an iSNS server to simplify deployment of a new iSCSI infrastructure for a client of mine. I feel that I understand what iSNS does and how to configure it, but I'd like some ...
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177 views

Diskless XenServer 6.2

I'm a bit suspicious since I cannot find relevant recent information on this. I am wanting to boot a diskless XenServer version 6.2 (the server... not the installer). I have an Intel Pro 1000 ET ...
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213 views

Linux/Open iSCSI: How to make iSNS discovery working?

I've read dozens tutorials and howtos but none of them helps me with the following problem. I have three machines: NAS server with iSCSI target on it which is registered in iSNS server. Solaris ...
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103 views

Adding external datastore to esxi, expanding datastore

I have an esxi 5.1 on a 1U server, accessed using vSphere. There are two 160G HDD's inside on RAID1. I'm looking to expand the number of VM's and the required storage is going to exceed this paltry ...
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159 views

Vmware Nas slow transfer rates/IOPS

I have built a test environment with a Synology RS812+ and an old HP140 server which has a gigabit nic installed. I have dedicated one nic to the network to DHCP and the direct to NAS from the server ...
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456 views

windows2012 failover cluster + storage. Considerations

We plan to build a failover storage with Windows2012r2. There will be 2 or 3 physical machines with 2 virtual machines on each server. One virtual machine building a failover, second one being storage ...
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98 views

Upstart task to wait for iscsi target to become available?

I've got a couple of virtualization servers running Ubuntu 12.04 and Virtualbox and just bought a Synology NAS which I plan to use as an iSCSI target to serve storage for the VMs. I realize that ...
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99 views

share an iscsi target thru samba

i just built an Openindiana/Napp-it box and i dont really want to get into Solaris ldap client setup. Does it sound doable to create a linux vm, set up samba on it, then connect to an iscsi target ...
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1k views

Equallogic ESXI 4.1 Slow read performance

We experience a slow read performance with a high read latency in vSphere/ESXi on our Equallogic iSCSI array (14x 750gb in RAID10). We checked already very much but cannot find anything. Setup: ...
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610 views

iSCSI connection is gone and when reconnected drive can't be accessed anymore on Windows 2008 R2

My client has QNAP library that I've used to share 2 iSCSI connections. One to physical machine and the other to virtual machine on top of that machine. One is 4TB (connected to physical machine) and ...
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384 views

Problem installing Microsoft iSCSI initiator on Windows 2003

Anyone got any idea what this is about: "Windows iSCSI200 has detected one or more protected files on your computer have been modified". I'm guessing that a service pack or Windows update has ...
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530 views

Replacing LeftHand SAN Hard Disk Outside of Warranty / Service Contract

I am working with 3 clusters of LefHand SAN iSCSI storage arrays. The modules are all older NSM 150s and NSM 160s (super micro server hardware, sata disks). The workload is low priority and all ...
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742 views

Failover Cluster Quorum Failing

I have two nodes which boots from iscsi to implement windows 2008 cluster. And I'm using disk majority option as quorum over iscsi. But when the quorum's iscsi connection failed(May be san server ...
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9 views

Virsh pool-info shows no space free on iSCSI pool

I have an iSCSI target configured on FreeNAS 9.3 (zvol backend). I also have a linux KVM machine where I'm trying to create a virtual machine using the iSCSI disk. On my linux KVM machine I can ...
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14 views

How does Xen Server share iSCSI?

When I create a resource pool of multiple XenServer hosts, add an iSCSI storage repository, how do the separate hosts orchestrate access to the iSCSI storage repository? To be clear, consider if I ...
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15 views

vSphere 5.1 and iSCSI multipathing

I have a problem in configuring vSphere Cluster with iSCSI multipathing. Host in cluster have four physical interfaces. Host have four vmk interfaces for iSCSI, which mapped to individual physical ...
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24 views

iSCSI Volume disappears from physical server during windows backup

I've got a Windows Server 2008 R2 box that I back up to an remote iSCSI volume via Windows server backup. I use Microsoft's iSCSI Initiator and Target software on both the Local machine and the remote ...
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21 views

fdisk -l do not detect device accessed using iscsi o XEN virtual machine

I am experiancing an issue in accessing the iscsi target in VMs created on XEN hypervisor. I have used Suse 11 SP3 to configure this. After discovering the iscsi targets from VM , I am able to view ...
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Find out /dev/by-id/wwm path using targetcli (LIO)

To mount my diskless iscsi I am using the /dev/by-id/wwn-0x1234567... devices. The server in question is using ILO and administrated by targetcli. I seem to unable to query the WWN in targetcli the ...
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501 views

iSCSI connection drops frequently - Synology NAS

I have a Windows 2012 R2 Server connected through iSCSI to my Synology Rackstation 2414+. The problem is that the connection drops very very frequently, up to 10 times a day (manually restored ...
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109 views

Windows Server Backup to iSCSI target 10x slower than copying a file using Windows Explorer to the same location

I'm running a colocation server with Windows Server 2008 R2. As a backup target, I'm using a Linux server run by the datacenter provider. The storage is addressed via iSCSI so that I can use Bitlocker ...
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73 views

iSCSI remote boot from intel NIC working in vmware ESX, not other distro´s

The objective is to have a completely diskless Centos connected to storage via. iSCSI over a 10Gb intel X540 NIC. The ROM on the NIC is flashed as initiator and tailing the logs on the target, i can ...
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48 views

Creating file server failover cluster

I'm in the process of setting up a new file server cluster with a shared iSCSI disk. I've been through the setup of iSCSI and MPIO and the disk has been initialized, formatted and brought online. ...
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82 views

Error in XenServer iSCSI SR Creation (SR is not available)

I have a XenServer 6.2 with a Debian 7.5 VM which i use as iSCSI target. I have my target reachable by portal but i would make a Storage Repository available in my XenServer pool. Unfortunately, ...
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114 views

NTFS corrupts by using Windows 2008 R2 share with Debian iSCSI Target

I'm currently using a Debian Wheezy server with a iSCSI block target "lun0". This target is mounted on my Windows 2008 R2 machine and formated using NTFS. The device is mounted as "D:\DATA" and shared ...
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321 views

Vmware ESXi 5.5 can't connect to iSCSI target with blockio enabled

I'm currently trying to add a new iSCSI target that is set to run blockio instead of fileio. The iSCSI target i located on a Ubuntu server 13.10 and i already connected one my ESXi host to on target ...
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24 views

iscsiadm - how to disconnect from one of several connections to same target

I have a RHEL 5.x server with multiple connections to the same SAN (different targets). I'm consolidating some of the storage and want to disconnect one of the connections. I have unmounted the ...
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209 views

DPM exceeds threshold of 90%

We currently have a setup with 3 devices : Dell MD3200i san, disk group created 6TB. Hyper-V Guest with DPM installed, iSCSI disk attached as a passthrough disk. Physical Hyper-V host, has the iSCSI ...
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124 views

iSCSI: Multiple initiators, single target, different LUNs

I have an iSCSI target with several LUNs on it. Right now they are configured as datastores in vSphere; what I'd like to do is delete one of these datastores (thus freeing up an LUN) then build a VM ...
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139 views

Can't connect to iSCSI target on Amazon EC2 Windows Server 2008R2

I have Windows Server 2008 R2 running on Amazon EC2 with attached elastic IP. All ports in a security group are open but only to my IP-address. I have succesfully set up Microsoft iSCSI Target 3.3 ...
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403 views

Cluster Shared Volumes offlining under excessive use

I am trying to understand (and ideally fix) a particularly annoying phenomenon I've noticed with Failover Clustering and Cluster Shared Volumes in conjunction with Hyper-V. It appears that under high ...
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47 views

iscsadm successful login but no block device is generated

i know, there is a similar article but the soluion there did not help. I'm using SLES 11 SP 2 with Kernel 3.0.13-0.27-default and i want to mount an iscsi Device from a Thecus NAS. I've using ...
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261 views

VDI size limited to 2TB in Citrix XenServer 6.2

I would like to know if it's possible to create a VDI greater than 2TB with Citrix XenServer using LVM over iSCSI. This limitation is not viable in a virtualized repository server. There's any ...
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155 views

read only file system

we have a Linux box (RH5) accessing a LUN on a NETAPP FAS2040 via iSCSI, for some reason the system remounts the LUNS(file systems) in read only mode, mostly when deleting huge chunks of data, ...
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154 views

Using puppet to deploy windows backup with Microsoft iSCSI

We currently have started using the following strategy for Windows backups, which I am looking to deploy via puppet: iSCSI Initiator is enabled on the client server. iSCSI Virtual Disk + VHD are ...
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52 views

SANHQ iSCSI network access

Trying to setup and configure SANHQ on a virtual server. Network I have patched 1 vmnic from each ESXi host into the iSCSI switch and configured the switch ports to access the same vlan as the san. ...
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296 views

PXE Boot an ISO with iSCSI information

High Level: I'm using pxelinux.0 and memdisk to boot a Windows PE iso. I then connect to an iSCSI lun and apply a Windows WIM. More information: Normally netboot/i is used to automatically assign ...
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596 views

iSCSI strange write performance from ESXi to QNAP TS559 and TS869

I have a strange performance issue with VMWare ESXi 5.0 and QNAP NAS (I tried with both a TS559 and a TS869 with the same result). The issue is this: I enabled iSCSI on the QNAP and created a ...