iSCSI - SCSI over IP - mount disks across the network

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2
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1answer
756 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. ...
3
votes
1answer
128 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 ...
2
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0answers
246 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 ...
-2
votes
1answer
3k views

remount a iSCSI datastore in ESXI host after network faillure

I run ESXI 5.1 and all my virtual machines are in a NAS mapped by iSCI datastore. My router broke and obviously all the vm's where cut from their disks. What I understand is that when such event ...
0
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0answers
250 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 ...
0
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1answer
20 views

ISCSI device and partitions used in ISCSI client

The command list all devices including ISCSI. cat /proc/partitions Is it possible to know which device is currently used by a given target? Thanks
3
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1answer
509 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 ...
-6
votes
1answer
2k views

Is nfs good to share disk images over the internet? [closed]

I have an image server, this server contains disk images to be used by virtual machines. The server has to allow the runtime creation of new images, so iscsi is not good as it requires to restart the ...
2
votes
1answer
506 views

iSCSI MPIO disconnections

We have a test cluster setup with MPIO and all seems to be working well. The setup is using Windows Server 2012 r2 with a qnap as the backend storage. Routes are as follows; 172.16.10.10 (qnap port ...
0
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1answer
215 views

Windows 2012 server wrong iscsi disk size

I have Windows Server 2012 and iSCSI storage. On the storage, I created a RAID1 array out of two 2TB disks and connected it over iSCSI to the server. But the server sees the connected device as ...
2
votes
3answers
6k 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: ...
0
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1answer
124 views

Live migration: is it possible to store image disks on a single iscsi target?

From redhat documentation: A guest virtual machine installed on shared storage using one of the following protocols: Fibre Channel-based LUNs iSCSI FCoE NFS SCSI RDMA protocols (SCSI RCP): the ...
4
votes
1answer
1k views

Which iscsi target on linux for serving vSphere? [closed]

All such questions are a bit dated; I'm hoping things have changed in the past year. What do you guys use to serve a DRS cluster with vSphere 5.1/5.5? SCSI-3 persistent reservation support would be ...
2
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0answers
446 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 ...
1
vote
2answers
97 views

vCenter handles only the boot volume?

We have an iSCSI SAN unit connected to a cluster of ESX servers. The servers are all managed by an instance of vCenter. The vCenter instance manages a dozen Windows Server VMs. Most of the VMs have ...
1
vote
1answer
385 views

how to determine the iscsi target's naa in linux

I understand that iSCSI uses iqn / eui to identify target LUN. Once I have discovered the iSCSI target and logged in is there a way to determine the LUN's NAA id for the remote target from a linux ...
3
votes
1answer
579 views

iSCSI devices added to storage server during DPM 2012 SPI backups

We have a Windows Server 2012 Failover cluster running a number of virtual machines. Storage for the cluster is provided by a Windows Storage Server 2012 instance and mapped to the nodes via iSCSI. In ...
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0answers
232 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 ...
1
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0answers
197 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 ...
2
votes
1answer
348 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 ...
0
votes
2answers
274 views

Sharing a SAN LUN across 2 clients

I have an ISCSI SAN that we purchased to store images for our cluster (2TB of images). After reading, we probably should have gone with a NAS rather than a SAN, but back to the point. I'm going to ...
0
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0answers
769 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 ...
0
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1answer
656 views

Synology iSCSI Target - Install Ubuntu Server using PXE

Massive iSCSI/PXE noob here. I have a iSCSI target on my Synology NAS that I have attached in OSX using VirtualBox. I have the Ubuntu Server install ISO mounted on the Synology at ...
7
votes
1answer
677 views

IQN Naming convention

I've seen a lot of information about how IQN's should be formatted, but there's not a lot of information on how to build them. I'm kind of a newb when it comes to iSCSI, and i have it working, but I'm ...
0
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1answer
254 views

Why Bitlocker in Windows Server 2008/2008 R2 doesn't support iSCSI drives?

As far as I know Bitlocker in Windows Server 2008/2008 R2 doesn't support iSCSI drives (but version included in Server 2012/Windows 8 does). Why it is so?
4
votes
1answer
438 views

ESXi 5x: Changing number of IOPS per path sees dramatic improvements

I'm a bit embarrassed that I've never seen or used the -iops parameter as part of the esxcli deviceconfig options. I stumbled upon an article and proceeded to benchmark before and after using various ...
4
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0answers
2k 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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votes
1answer
671 views

Setting up iSCSI on an external hard drive with 4K sector size [closed]

I have a WD My Book 3TB external hard drive connected to a Windows Server 2008 R2 machine. I'm trying to make that machine an iSCSI target. Everything is set up, but I can't create a virtual hard disk ...
-4
votes
1answer
429 views

iSCSI drive running at 100% but SAN and Network are not [closed]

We have a virtual server running on VMware. This virtual server has a number of iSCSI drives attached to it (E, F & G drives). It has 2 virtual NICs - 1 for normal network traffic and 1 for iSCSI. ...
4
votes
1answer
440 views

iSCSI TGTD over InfiniBand Performance

I have just configured a server-to-server 4x SDR InfiniBand link to increase bandwidth for the backend storage of my virtual machines, specifically a database server. I am using iSCSI with TGTD on ...
2
votes
2answers
540 views

iscsi slow read speed

we are currently experiencing very slow speeds when copying a huge file (35GB+), to our surprise it starts off at a very high transfer rate 300MB/s, then drops to 4MB/s after 10-20 seconds into the ...
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4answers
2k views

Benefits of iSCSI over FTP or SMB

I was wondering if there are any major advantages of using the iSCSI protocol to access a NAS over a connection via FTP or SMB (besides access speeds, which would be higher with the use of the iSCSI ...
2
votes
1answer
208 views

Why is my iscsi device causing my CentOS server to fail to boot?

The iSCSI mount I have attached to a CentOS server became unresponsive and caused the CentOS server to lock up. When the iSCSI server was repaired the CentOS server was rebooted, but even though iscsi ...
2
votes
1answer
2k views

XenServer 6.1 Reports Wrong Storage Amount in XenCenter

We're using XenServer 6.1 Advanced on three blades in a pool. I'm in the process of moving storage from an old SAN to a new SAN using Storage XenMotion. So far, so good! I discovered though, on a LUN ...
1
vote
2answers
293 views

Is VLAN separation required for multiple networks?

I am setting up a Dell 6248 combining separate switches used previously. I am planning the following architecture: VLAN 1 - External traffic (each server's public interface connects to this) VLAN 2 ...
1
vote
1answer
751 views

MPIO Issue With Server 2012 R2 iSCSI Target

The Setup. We just got 2 HP DL360 g6's Server 2012, running Hyper-V, server1 has an additional P800 controller for an MSA70 sas storage, and is hosting iscsi targets for hyper-v's on server 2. both ...
1
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2answers
1k views

Can I run vMotion traffic over iSCSI network ESXi 5.5

Is there anything wrong with using one vmkernel in a multipathed iSCSI setup for vMotion traffic as well as iSCSI? I have iSCSI storage setup using 2 vmkernels for MPIO. I'd like to use one of those ...
1
vote
4answers
641 views

10GbE with FCoE with SAN and LAN traffic is a good solution?

I'm building a small datacenter from the ground, and I'm considering 10GbE. I'm looking for some advices about this decision. I've compared Infiniband, FC, 10GbE and LACP with GigE, and in the end ...
1
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0answers
690 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 ...
2
votes
1answer
822 views

iSCSI Datastores not found after Power Failure

I have an ESXi 5 host running 3 virtual servers. 1 of these servers uses a datastore via Software iSCSI on a separate piece of hardware. When the two hardware servers (storage and host) experience ...
0
votes
1answer
1k views

iSCSI Target drive turned RAW format

I have an iSCSI Target drive that was working fine after creation for a few days. After i copied about 40GB of data to it i lost access to the drive. the file system had changed to RAW and windows ...
0
votes
1answer
98 views

iSCSI initiator - only want one of three available volumes

Initiator: CentOS 6.4 Target: EqualLogic PS6110 I have three volumes currently exported from this SAN. I want to connect to one of these (and only one) from the CentOS machine. What I've tried: ...
0
votes
2answers
4k views

Basic iSCSI target setup on Proxmox VE (Debian 7) not working

I have created a Linux LVM partition on my disk and want to share it over network via iSCSI. However, the target is unreachable with iscsiadm (from both local and remote). The setup is shown below. ...
0
votes
2answers
339 views

windows 2012 failover cluster, system validation, and storage spaces

I have two host servers with Windows 2012 Hyper-V installed. I have also configured File and Storage Services with one Storage Pool, one Virtual Disk on each server. I used Star Wind SAN for Hyper-V ...
1
vote
2answers
5k views

Routing traffic to a specific NIC in Windows

I added a 10GB NIC to a SQL server which is connected over to a backend storage using ISCSI. I would like to force traffic going to a certain IP address/host to use the 10gb NIC, while all other ...
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1answer
135 views

Where is the location of shares stored in Windows Server? (Switching iSCSI disk to VMDK)

I have a virtualized Windows Server 2008 with iSCSI volume attached (inside the guest). This disk servers as the main file server data disk with lots of shares, permissions, etc. I would like to ...
1
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1answer
586 views

Create a share on iscsi drive in Windows Server 2012

I am brand new to server administration but I don't belive im trying to do anything to exotic I have a windows server 2012 (standard) and a drobo 800i My goal is to setup company shares on the ...
2
votes
2answers
2k views

iSCSI: LUNs per target?

My question relates specifically to ZFS/COMSTAR but I assume is generally applicable to any iSCSI system. Should one prefer to create a target for every LUN that you want to expose? Or is it good ...
0
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1answer
358 views

Solaris iSCSI read speeds increase when we start writing

Here's one I haven't seen before. We have an IBM Storwize V3700 storage array, 24 TB, RAID 5 connected to a Solaris 10 file server via an iSCSI link over Gigabit Ethernet (no MPIO at present). We ...
2
votes
4answers
140 views

SAN newbie: Using a server like an ISCSI gateway for a purely FC SAN device

I am very new to SANs and have inherited an old EMC CX300 to play with. The CX300 is purely FC, but I'd like to experiment with ISCSI as well without having to purchase an expensive ISCSI gateway ...