iSCSI - SCSI over IP - mount disks across the network

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Persistent Disk Name in RedHAt Cluster on VMWare Workstation-10.01

I am trying to implement a 2 Node REDHAT HA cluster. The following is my environment. VMWare WorkStation 10.01 Node-1 >> CentOS-6.3 x86_64 Node-2 >> CentOS-6.3 x86_64 Node-3 >> CentOS-6.3 x86_64 [ ...
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991 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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19 views

Xen cannot see all the LUNs in ISCSI HP StorageWorks MSA2312i Dual Controller Modular Smart Array

I have a HP StorageWorks MSA2312i Dual Controller Modular Smart Array and a second enclosure. I have four vdisks: vd01 (RAID5) (Current Owner A) vd02 (RAID5) (Current Owner B) vd03 (RAID10) ...
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97 views

iSCSI SAN RAID 10 Performance — Poor Read, Good Write

I have a EqualLogic PS4000 SAN unit with the latest firmware, setup in RAID 10. I have 3 2TB Volumes on the SAN shared out via iSCSI on 2 eth ports on two different subnets. I have moved a test server ...
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54 views

Deploying iSCSI Diskless Clients via WDS

I am trying to install Windows 7 to iSCSI targets that will be booted by diskless clients via iPXE. To do this, I need to setup .wim boot and install images in WDS. Is there a way to create standard ...
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2answers
729 views

Fine tuning iSCSI Initiator configuration in Windows Server 2008 R2

I've set up a 3 node cluster with Windows Server 2008 R2. I need to connect to these nodes a lot of lun (18 LUN on each node; not my decision... :( ). After digging a while with iSCSI Initiator ...
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838 views

Why should iscsi traffic be isolated?

Why should iscsi SAN traffic be isolated? I'm trying to explain to my network guy why we should isolate the traffic.
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1k views

Removing an iSCSI Target - iSCSI initiator 2.0 on Windows Server 2003 R2

For the life of me I cannot figure out how to remove an iSCSI target (Dell Equallogic SAN) from a Windows Server 2003 box. The volume shows up in Windows as drive letter Y:\ Using the iSCSI ...
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1k views

Successful login with iscsiadm on target still doesn't create block device

I've set up an experiment to test iscsitarget and initiator, which at some point worked. Later, I turned the setup back on and much to my dismay, the initiator machine stopped making block devices for ...
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836 views

ShadowCopy Error 7001 (Unable to create a shadow copy) but SC got created and works fine, what to do?

I'm running Windows Server 2008 R2 on a Dell R410. A QNAP NAS is connected to it via gigabit crossover. A 2.6 TB LUN is mounted via iSCSI as Volume Z:. A task should create Shadow Copies three times ...
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23 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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1answer
26 views

Properly ordering shutdown of MySQL and iSCSI on Ubuntu Lucid

I'm running MySQL on an Ubuntu 10.04 server, with the MySQL $datadir located on an iSCSI volume. The filesystem is tagged with "_netdev" in /etc/fstab. On system shutdown, upstart sends MySQL a ...
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1answer
112 views

Is there any downtime when expanding a volume on an iSCSI setup using Synology Hybrid RAID?

The subject sums up the scenario. I believe the answer is there is no downtime but the system might simply be slower during the rebuild. Which is fine. But if there is downtime, how long? A small blip ...
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73 views

Cluster-Shared Volume on Windows Server 2012 R2 drops off with minor iSCSI pauses

We are running into an issue here where the Cluster-Shared Volume attached to our Hyper-V 2012 R2 cluster is being dropped off / faulted with the slightest interruption from the iSCSI SAN connection ...
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15 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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3k views

Fatal: module iscsi_trgt not found — trying to get my iscsi target to run on debian

Sorry about the formatting below... Linux Microknoppix 2.6.39.3 #21 SMP PREEMPT Sat Jul 23 09:48:39 CEST 2011 i686 GNU/Linux modprobe iscsi_trgt results in FATAL: Module iscsi_trgt not ...
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13 views

XenServer move VM Failed

We currently are running our XenServer virtual machines off of an over extended Drobo unit and wanted to migrate a particular 600+GB VM off of the Drobo onto a newer Drobo, so I attached a storage ...
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40 views

iSCSI paths are alternately active and dead after connecting second ESX server

Multiple Virtual Machines (VMs) reside on an ESX server (ESX1) and are stored on iSCSI. Connecting a second (ESX2) to iSCSI seems to work fine as a VM is created and stored on iSCSI. However inactive ...
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1answer
62 views

sg_map & lsscsi showing old storage version

I am using SUN storage and recently upgraded/refreshed my ISCSI LUN storage. We have replicated old storage to new storage and attached to our servers. I can see at SUN storage side that storage is ...
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1answer
257 views

Lio iSCSI target on OpenSUSE?

I want to use an iSCSI targeting framework that supports SCSI-3 and VAAI for use as an iSCSI SAN cluster across 2 servers. As far as i'm aware I can use either Lio ...
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175 views

Windows 8 on iSCSI with LIO target: thin provisioning

I have installed Windows 8.1 on an iSCSI target. This target is provided by Linux LIO and is backed by a sparse file. One of the reasons I created such an installation was thin provisioning. In other ...
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128 views

Hide iSCSI targets in linux?

My SAN reports the same targets with multiple IP addresses. Is there a way to hide some of those IPs so I don't see the same targets multiple times?
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37 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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3k views

CentOS Client - Unable to Establish iSCSI connection with multiple interfaces on the initiator

So after upgrading to CentOS 6.2, I am seemingly no longer able to login into my iSCSI targets. I have multiple interfaces on different subnets on the system, and I first thought that it had to do ...
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60 views

What is the maximum number of iSCSI connections that Server 2012 R2 can initiate?

I found online that Server 2008 R2 host can only initiate a maximum of 255 iSCSI connections, and that it was a hard limit within the OS itself. Does this same restriction apply to Server 2012 R2? ...
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44 views

Setting up a multi-host SAN

I'm looking for some advice on setting-up multi-host I/O access on our SAN: I have a blade enclosure (PowerEdge1000e) containing an Equallogic PS-M4110 storage blade with a single RAID6 volume ...
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116 views

Windows 8.1 / iSCSI / Hyper-V Depedencies

My workstation has Windows 8.1 and uses iSCSI for SAN storage, which is where the Hyper-V configuration and VHD files sit. When the workstation is booting up, the VM is not able to auto start because ...
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1answer
101 views

iSCSI: HP MSA 2012i, initiator only discovers one target

I am trying to configure my HP MSA 2012i such that every disk is a vdisk and every vdisk is a volume. Each volume shall be accessible using iSCSI. So each volume shall be a iSCSI target. This is not a ...
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1answer
222 views

RHEL 6 iSCSI LUNs

I have a RHEL system set up as an iSCSI target with 2 luns shared out via one target via the following configuration in /etc/tgt/targets.conf (which I built following the commented out examples in ...
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116 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, ...
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69 views

VMWare - Jumbo Frames over iSCSI to a NAS4Free array

I am having problems getting Jumbo Frames working over my iSCSI connection. Here is what I try. 4 1GbE connections on 4 different subnets on my NAS4Free array for iSCSI, MTU set at 9000 2 redunant ...
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2answers
66 views

What could be wrong with my XenServer iscsi configuration after a recent power outage

We just experienced a power outage due to a lightning storm. Outage was long enough to restart servers and switches. We have 2 XenServer hypervisors running in the same pool. At first, both of them ...
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31 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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1answer
170 views

Installing to an iSCSI target and booting it without PXE

I'm running Windows Server 2012 R2, Standard Edition and have set up an iSCSI target, which I'm wanting a client to be able to: Connect to in such a way that I can install Windows 7. Allow client to ...
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1answer
1k views

How to connect SAN from CentOS through two iSCSI Targets

I had asked the similar question before. This time I want to use subnet for two iSCSI Targets, hence I start a new question. I have an old Promise VTrak M500i SAN Server. It comes with 2 iSCSI ...
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233 views

iSCSI no longer recognizing NAS drives

I have two NAS (Seagate Black Armors) connected to our network through iSCSI to a Dell Optiplex 760 running 32-bit Windows 7 and Windows iSCSI Initiator. For some unknown reason, within the last week ...
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1answer
440 views

How to crack the 1 Gbit iSCSI limit between ESXi and VNXe

I'm having big troubles with my iSCSI network and can't seem to get it working as fast as it could. So I've tried pretty much everything to gain full performance from my SAN, having involved ...
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95 views

Ideal iSCSI setup [closed]

We are experiencing slowness and I am fairly new to using SANs so I would like some help with this. First off, I don't think this will fully solve our issue, but I would like to focus on our iSCSI ...
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1answer
132 views

Install xenserver on iscsi target

Is is know that Xen Server is based on CentOS, and it is fact that CentOS can be installed on an ISCSI target flawlessly, but I wanted to install Xen server on an ISCSI target I couldn't find a way. ...
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1k views

How to use iSCSI MPIO to increase bandwidth with XenServer?

I've 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: ...
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2answers
3k views

iScsiPrt error event ID 5

Event Log: "Failed to setup initiator portal. Error status is given in the dump data." This is being recorded every 3/100's of a second. We are using MS iSCSI Initiator on Windows Server 2003, Dell ...
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1answer
54 views

Arch: sharing a raw SCSI device via iSCSI?

I am working with some older SCSI devices on my Arch Linux installation. The information on the disks is actually needed on other systems. While I certainly could mount the disk on Linux and share it ...
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408 views

ESXi boot time with 9 iSCSI targets

Our ESXi hosts have always been slow booting when it came to iscsi_vmk loaded successfully - sitting here for almost 5 minutes. In all a full server reboot takes almost 12 minutes. We have 9 iSCSI ...
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57 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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1answer
477 views

How to configure multiple iSCSI Portal Groups on a EqualLogic PS6100?

I am working on a migration from a VMware vSphere environment to a Hyper-V Cluster utilizing Windows Server 2012 R2. The setup is pretty small, an EqualLogic PS6100e and two Dell PowerConnect 5424 ...
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170 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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1answer
106 views

Are FC and SAS DAS devices standard enough?

Before I ask my questions, here is some background info that may or may not be useful: For the first time I find myself needing a DAS solution. My priority is data through-put in a single direction. ...
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2k views

Failure connecting to Dell MD3200i from XenServer 6.2 pool

This question also asked at Citrix Forums http://forums.citrix.com/thread.jspa?threadID=332289 I have a MD3200i that is currently working fine with my Xen5.6 pool, but I cannot get a connection to ...
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1answer
189 views

Best method to share ISCSI lun across cluster of app servers

I'm in the process of migrating our cluster to new hardware. We use bare metal servers, no virtualization. Currently, we have around 30 "application" servers. When we make an update, we push the ...
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4k views

iSCSI drive doesn't mount after reboot of windows 2008 r2

I have a server with Win2008R2 and a synology NAS. On the Nas there are 6 iSCSI partitions which are mounted on the windows server. The windows server is virtualized under Hyper-V. After rebooting ...