iSCSI - SCSI over IP - mount disks across the network

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393 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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106 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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72 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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531 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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317 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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296 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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505 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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2k 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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875 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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517 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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95 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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105 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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56 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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118 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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297 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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74 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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75 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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552 views

iscsi TGTD gets continuous tgtd: conn_close(100) connection closed, 0x10b9288 1

I have a NAS server running tgtd on Centos 6. In my /var/log/messages, I an getting a constant entry every 3 seconds: Sep 26 22:21:24 san2 tgtd: conn_close(100) connection closed, 0x1143728 1 Sep ...
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513 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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375 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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500 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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721 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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22 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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20 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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30 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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58 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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190 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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21 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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136 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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74 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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93 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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171 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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35 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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198 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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32 views

Collect statistics about use of iscsi targets

We're using iscsi (open-isci) to access volumes stored on a ZFS server from virtual machines and on high load we'd like to identify which virtual machines is pound away at our file system. We ...
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112 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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834 views

CentOS 6.4 iSCSI Target - crm shell error

I try to make a iSCSI Target on CentOS 6.4 with DRBD, Pacemaker, Open-iSCSI and LVM2. Now i need to prepare the HA iSCSI Target configuration on the crm shell, but if i enter the configure mode, ...
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123 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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134 views

Setting up iscsi and determining the scsi ID for multipath

Is there another way to determine the SCSI ID when trying to setup the friendly name in multipath.conf? I executed the command multipath –ll –v2 and didn’t see the new slice we had setup (after ...
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43 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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243 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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436 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 ...
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242 views

DFS CIFS shares not responding to demand

I'm hoping someone can help me here with understanding how a windows file copy differs between a copy using terracopy (or similar) and what that means for contention on my NAS head. Background: ...
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46 views

Registry change on a key a server does not have

I have written a script that queries the registry on multiple servers looking for specific keys (dealing with iSCSI). After the query, I need to make changes to some of the keys in: ...
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71 views

Cannot login to ISCSI Target - hangs after sending login details

I have an ISCSI target volume, to which i am trying to connect using CentOS Linux server. Everything works fine, but cannot its stuck at login. Here are the steps i am performing: [root@neon ~]# ...
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139 views

RHL 5 command “service iscsi restart” causes I/O error on Mapped LUNs

a little help please... every time the comannd "service iscsi restart" is issued on a RHL 5 Server access to the LUNs are lost, when we try to list the contents of the LUNs the following error comes ...
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352 views

Log On To Target results in “Authentication Failure”

I'm attempting to add an Iomega StorCenter ix2-200 to an existing MS iSCSI setup but it keeps giving an error message. The current iSCSI setup has two Seagate BlackAmor's operating perfectly. Any ...
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244 views

install network drivers on a diskless windows 2008 R2

I have a dell r715 with a Broadcom NetXtreme II 1 Gigabit Server. I am booting my Windows Server 2008 R2 through iSCSI from a SAN. I want to install my network drivers. When I try to install my ...
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154 views

Vmware ESXi 4.1u1 installer unable to find EMC LUN

We have DELL R710 with Broadcom NetExtreme II 5709 card. EMC Celerra NX4 Broadcom card is configured property to use specific LUN on EMC SAN (we use VLANs). We can clearly see that it finds the ...