iSCSI - SCSI over IP - mount disks across the network

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2
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2answers
41 views

Is a switch is an iSCSI “mode” required for iSCSI targets?

If I have a switch, nothing special set up, just regular traffic, no jumbo frames, no special iSCSI set up, can I still have iSCSI traffic, say from a Windows machine using the iSCSI initiator and a ...
2
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0answers
12 views

EMC NS-480 Celerra - Way to verify which iSCSI initiators are currently connected to a LUN?

In the NS-480 or a given Celerra NAS, is there a way to verify which iSCSI initiators are actually CURRENTLY CONNECTED to a given LUN? I can see how to look at the LUN MASKs in Unisphere and see ...
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0answers
16 views

wbadmin discardes complete backup history after dynamically resizing virtual **source** volume

A customer SBS2011 (Windows Server 2008 R2) is incrementally backuped using wbadmin. The system ist hosted on a VMware ESX 5. We dynamically increased the size of one of the volumes which is backed ...
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0answers
20 views

Windows Server Backup - iSCSI and USB Drives

Been using S2012R2 built in backup for a while with great success now, using a single USB3 external drive for daily backups. (1.6TB data approx). We're now looking to add an offsite backup, where we ...
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0answers
10 views

LVM File Systems created with multipathed ISCSI storage LUNs are automatically going to Read-Only mode

I am using my RHEL 5 server with SAN LUNs to take the backup of my domain mails of all the users. For the redundancy, I configured multipathing for those LUNs. For scalability, I used those ...
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0answers
27 views

Synology DS1813+ RAID 5 with iSCSI IO wait perfomance issue

I'm have RAID 5 on Synology DS1813+ (DSM Version: DSM 5.0-4493 Update 4) with 8 ST4000DM000-1F2168 disk, usind as NAS and iSCSI/NFS targer for ESXi. In low read/write rate from disk have more io ...
0
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1answer
34 views

iSCSI opcode[89], error(-65539)

I have error iSCSI target (Synology DS1813+) used as NAS: Jan 19 12:03:55 SRV1 kernel: [23311947.266497] iSCSI: iSCSI: EPIO[/volume1/@iSCSITrg/iSCSI_3_Extent_LUN-LUN1_000], opcode[89], ...
0
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1answer
31 views

RHEL: iscsiadm is not able to login in any port except 3260

Discovery is successful: [root@ncdqd0110 iqn.11351.com.xxx:AAA]# iscsiadm -m discoverydb -t sendtargets -p 127.0.0.1:54541 --discover 127.0.0.1:54541,-1 iqn.2495.com.xxx:AAA Login is failing: ...
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11 views

Unable to see the iscsi luns given from a second target server to the same initiator on RHEL

I configured a target server on RHEL 6.7 and provided the LUNs for a machine running on RHEL 5.4. After few days, the storage on the target server is completed and I configured another target server ...
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44 views

Xenserver 6.5 (Open Source) VDI per ISCSI LUN (ZFS ZVOL)

In Xenserver 6.5 (open source edition) I want to create VMs with VDIs that are actually iSCSI LUNs shared by a CentOS 7 SAN which are in fact ZFS ZVOLS (the last part should not matter). My problem ...
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18 views

Linux, fiber switch brocade and IBM san storage connectivity

i have problem connecting my linux box to IBM san storage here is the configuration Debian wheezy Fibre controller QLogic 4Gb dual port DS4700 San Storage using Storage manager 10 brocade fiber ...
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0answers
25 views

ISCSI intiator displaying the ISCSI target even after its removal on ISCSI target server

I am running a ISCSI target server on RHEL 6.7 and sharing the storage for the ISCSI initiator server which is running on RHEL 6.5. I configured the below code in the /etc/tgt/targets.conf file of ...
4
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2answers
80 views

Xenserver, iSCSI and Dell MD3600i

I have a functional xenserver 6.5 pool with two nodes. It is backed by an iscsi share on a Dell MD3600i SAN, and this works fine. It was set up before my time. We've added three more nodes to the ...
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0answers
22 views

Server 2012 iSCSI target remains after deletion

I've got server 2012 as an iSCSI target, and a server 2003 (not R2) as iSCSI initiator. The initiator sometimes hangs and says "reconnecting..." and I think it's because an old target shows up, but ...
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0answers
15 views

ietd - spamming logs ietd: unable to connect (Connection refused) 2

I have a fileserver (debian wheezy, 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3 x86_64 GNU/Linux) set up with open-iscsi, o2cb, ocfs2. 3 connected clients and the fileserver itself are working great, ...
1
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1answer
48 views

Access iSCSI block device, setup as ZFS volume on CentOS7 - won't automount on boot, hangs on reboot

I am running CentOS7 on a virtual instance at Softlayer. There is a block storage device available to the instance via multipath/iscsi I have successfully had this block device mounted as XFS. I ...
0
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1answer
24 views

Can I Migrate An iSCSI Initiator Name To Another Server?

I am working on upgrading a virtual appliance in a datacenter and the upgrade process is a drop-in replacement of an update VM, but also a different disto (Debian -> CentOS). I am stuck waiting on an ...
8
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1answer
128 views

iSCSI design options for 10GbE VMware distributed switches? MPIO vs. LACP

I'm working on expanding the storage backend for several VMware vSphere 5.5 and 6.0 clusters at my datacenter. I've primarily used NFS datastores throughout my VMware experience (Solaris ZFS, Isilon, ...
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0answers
23 views

ISCSI slow connection after reboot

I have a problem with my ISCSI storage, and hop you can help me to solve this problem. The system was made following this tutorial: https://help.ubuntu.com/community/HighlyAvailableiSCSITarget So i ...
3
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2answers
179 views

iSCSI target stuck reconnecting after server reboots

I've been having some ongoing issues with my iSCSI connection not reconnecting itself after the server reboots, as shown below: OS is Windows Server 2008 R2. The iSCSI device is for my SQL Server ...
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31 views

Dell M620 Windows 2012R2 Boot from iSCSI to PS6000 Issue

All QLogic drivers are current. The iSCSI initiator connects to the target and volume (of course there is no OS yet) when testing the boot. I've read the Dell Configuring Windows Server 2012 for ...
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0answers
45 views

Mirroring on external SCSI and iSCSI disks inside same volume group

On IBM P5 505 (maint level 5300-07) servers there is a concurently accessed external storage, which is connected using external Ultra320 SCSI port (DAS). External storage is detected as hdisk2 which ...
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28 views

How do I add an iscsi target to a windows initiator through stock cmd?

I have many Windows Servers that need to run headless but I need to add many iscsi targets to each of the Windows hosts. I already have the iscsi target setup and have access to IP address of where ...
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50 views

Maximum transfer rate iSCSI bonding vs multipath

I want to get the maximum tranfer rate with iSCSI from my virtual machine (Linux) to my Linux Storage Host. I don't know iSCSi well so I'm not sure which way is the best for performance. A: Just ...
3
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1answer
170 views

Disk IO Performance Difference — Hyper-V / CSV — Guest vs Host

I have two different Hyper-V 2012 R2 environments that use iSCSI to connect to their virtual machine storage. While the environments are different (one is all 10 GB whereas the other is mixed 1 GB / ...
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59 views

Xenserver 6.5 Live Storage Migration

In my xenserver environment I have an LVM over ISCSI storage repository (SR) and I have another SR which is an NFS share setup on a synology server. To be clear, all servers are in one resource pool. ...
0
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1answer
41 views

Server 2008 - 1st NIC's traffic stops when 2nd NIC is plugged in

I have a file server running Windows Server 2008 R2 with 2 NICs in the back. These are their configurations: Connection #1 Local Area Connection 10.1.37.6 255.255.255.0 [No Gateway] Connection #2 ...
0
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2answers
42 views

Migrating NFS server (Linux)

We have a NFS server (Linux) who stores files in a iSCSI disk array. This server is in production. The server and the array are very old and have to be replaced soon (the array is already in serious ...
1
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1answer
83 views

RHEL 7.1 iscsid fails to get target as networking doesn't seem to have started

I have 2 RHEL 7.1 VMWare vm's (server and client) connected on a private vmware network. They each have 2xe1000 nics using teaming. I can see the teaming works as expected. I've also configured ...
0
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1answer
82 views

disable multiple initiators connection using targetcli

I have setup iscsi target using targetcli to have some hard drives(block devices), and in "TPG authentication"(a unique useid and passwd for all initiator). When one initiator does discovery and ...
2
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1answer
96 views

iSCSI: lsscsi lists device but fdisk does not

How do I make freebsd show initiators a mountable target from a zpool? On a fresh install of FreeBSD 10.2 (hostname bohr) I made a zpool named tank with a single vdev which is 2 disks in a mirror; ...
3
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1answer
56 views

Best practices for migrating to new SAN

My collaborator is splitting from his institute and wants help moving his application and data off the institute's network. And of course things are moving quickly. He has 12 TB of image data on a ...
0
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1answer
76 views

iSCSI Volume shown as two partitions on disk manager and need to merge/extend

I've just created a LUN and Target on my NAS, the from windows server, used iSCSI initiator to mount it. Disk appears in disk manager Disabled. Using diskpart i remove readonly attrib and created ...
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135 views

Ubuntu 14.04 iSCSI initiator auto login

a few minutes ago I had to solve issue with initiator autologin. My software stack is: Ubuntu server 14.04, open-iscsi, open-iscsi-utils and multipath-tools. The symptoms are very simple. After ...
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0answers
155 views

Seriously confused by SMB and iSCSI clustering

I am trying to configure my storage server(only 1 node for now, more to come)for SMB shares so that my separate Hyper-V nodes can use the storage server disks for shared storage. I decided to go the ...
1
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1answer
22 views

Trying to add 2nd iSCSI VDS to XenServer, receiving error about LUN already used by other SR

I've stepped out of my comfort zone here. Some background. I just provisioned a 2nd vdisk+volume on a HP MSA2000. This SAN is has another vdisk+volume linked to Xenserver. I set the mapping to the ...
0
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1answer
123 views

Log in to a single LUN of a target with iscsiadm (open-iscsi)?

Is it possible to connect to only a single LUN of an iscsi target when using iscsiadm? I have a target like "iqn.0000-00.iscsi.foo:bar" this target has 1000 LUN's. If I do iscsiadm -m node -l -T ...
2
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0answers
33 views

Automatically build kernel modules after unattended upgrades in ubuntu

For automatic upgrades I has installed unattended-upgrades package and configured it. After each unattend kernel upgrade I must run following commands to recompile iscsi kernel modules: apt-get ...
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0answers
15 views

How many clients on lower end iSCSI targets? [duplicate]

Was wondering if anyone has built an iSCSI server on current AMD hardware. I ask because i am slowly implementing ccdisk on a 28 machine internet cafe. Now i am starting to question my build. I ...
1
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1answer
82 views

How do I expand a PowerVault MD3000i virtual disk?

I have a PowerVault MD3000i connected to a PowerEdge 1950 via iSCSI. The MD3000i has ~7TB of space. We want to use pretty much all of this space as one large file server configured with RAID 5. We ...
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0answers
193 views

VMWare ESXi and iSCSI via FreeNAS

I've recently been setting up a sandbox ESXi environment with a VM running FreeNAS providing a volume which is connected as a datastore on the host via iSCSI. I've created a VM on this datastore and ...
2
votes
2answers
129 views

iSCSI to NetApp FAS: high latency for write load

Problem A Linux iSCSI initiator is seeing high service times when writing to a NetApp FAS target exposing a bunch of LUNs. Where to look for the cause and how to resolve this? Reproduction I am ...
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0answers
73 views

How can I specify the devices for an iscsi target?

I have an AWS Storage gateway that exposes two iscsi targets. I am attaching them to an EC2 instance running Amazon Linux: iscsiadm --mode node --targetname gateway.com.amazon:volume1 --portal ...
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2answers
86 views

Shared filesystem between KVMs

If I want to have shared fs between multiple kvm machines what is the best way to go when I'm already using ceph. I accessing my kvm disks directly through rbd devices but with ext4 on top of this ...
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0answers
87 views

Setup iscsi target without CHAP failure

I have been trying to connect to the Target with no luck. I can see the iqns but authentication fails. I checked the config files for CHAP and its disabled by default. ...
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0answers
65 views

Install SLES11 sp3 on HP BL460c Gen9 server with 650 FLB controller

I am trying to install SLES11 sp3 on HP BL460c Gen9 server with 650 FLB controller connected to a SAN over iSCSI, I need to install SLES on the remote SAN On the Disk Activation page while ...
3
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1answer
275 views

Configure HP BL460c Gen9 with external iSCSI SAN

Hi I am very new to servers. I have a HP BL460c Gen9 server with 650 FLB controller in Legacy mode. I need to connect this to a external SAN through iSCSI. I am not able to go to the NIC BIOS by ...
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2answers
428 views

XenServer, mapping SAN LUN to VDI

I have a few XenServer 6.2/6.5 hosts, and ZFS SAN datastore, providing iSCSI exports for VM storage. It's not an optimal solution to export huge 1-2 Tb LUN as XenServer LVMoiSCSI SR, because: a) no ...
0
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2answers
70 views

ISCSI vs ISCSId Services

From ISCSI clients, we execute # systemctl start iscsi. However, i can see there is another service called iscsid. Can anybody explain about iscsi service vs iscsid service in rhel7.?
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85 views

Deployment of Base-Node via iSCSI in Server 2012R2 HPC cluster fails (can not join domain)

We are currently evaluating Server 2012R2 with HPC Pack for an upcoming project. Sadly we are stuck at deploying the base node. The node boots via PXE (iPXE) and connects to iSCSI, installs Windows ...