iSCSI - SCSI over IP - mount disks across the network

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PAGE_FAULT_IN_NONPAGED_AREA (msiscsi.sys) - how to troubleshoot/resolve?

I am using Windows 8.1 Pro x64 with all updates installed. My machine is Lenovo W540 laptop and I have connection to iSCSI target (using gigabit wired Ethernet). iSCSI target is Synology NAS (DS415+). ...
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1answer
22 views

Persistent ESXi iSCSI datastore from guest VM based target?

I'm in the process of building a home lab environment for Cisco and VMware that will also double as a NAS. The system runs ESXi v6.0 bare metal. Part of my design is that I have a Lenovo TS440 with ...
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1answer
45 views

Windows Server 2008 R2 Standard Dropping Packets

I am seeing a strange problem with my WS2008R2 server I believe is related to networking. The symptom is that 6% of all attempts to ping the server using tcp fails. For example, from another machine, ...
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5 views

Source IP of VMware storage paths

I have an iSCSI array that is working fine with my VMware host. I'd like to disable several paths because they don't have end-to-end jumbo frames. For the life of me I can't tell what the source IP ...
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1answer
21 views

Hyper-v ISCSI Network Setup

I have Hyper-v installed on Windows Server 2012 R2. We are using 2 x Dell R730xd's with 8 NICS (4x10GigE 4x1GigE) per host. I would like to dedicate 2 NICS to our ISCSI network, however I am unsure ...
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1answer
102 views

Incredibly slow snapshot removal

I have an ESXi box with HP LeftHand storage exposed via iSCSI. I have a virtual machine with a 1TB disk, of which 800GB is consumed. The disk is thick provisioned on the LeftHand storage. A snapshot ...
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48 views

Why doesn't ESXi see the LUN in my Server 2012 iSCSI target?

I don't see what I'm missing here. In Server 2012, I installed the roles, created the virtual iSCSI disk, selected "create a new target" for this disk, named it, grabbed the IP and IQN of the ESXi ...
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1answer
38 views

Using a NAS as iSCSI to share a volume via Windows 2012 vs CIFS/Windows share

I'm migrating an Active Directory Windows 2003 server to Windows Server 2012 R2. Currently, I have a MyDocuments redirection policy enabled on the Window 2003 server to a local drive. Since the ...
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1answer
26 views

windows server 2008 R2 backup issue

I have configured and iSCSi drive by using iSCSi Initiator for a windows server 2008 R2 for the purpose of storing backup but when I try to run backup schedule and assign the iSCSi drive as a backup ...
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3answers
151 views

Windows - mount network drive with client-side read/write caching from Linux storage server

Is there a way to mount network drive on Windows with client-side read/write cache enabled? In my case drive is guaranteed to be mounted by 1 user, and performance is way more important than ...
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1answer
61 views

SATA drivers in Debian squeeze

I have Debian Squeeze installed on a compact flash card in ATA port. I copied the whole system to SATA drive but system holds in initramfs because can't mount root file system. I know that my system ...
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Linux iSCSI - Limit max concurrent sessions

I would like to understand if, and how to, limit the maximum number of simultaneous connections to a specific LUN under CentOS Linux, both with the old iSCSI stack (tgtadmin and friends) and the new ...
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2answers
97 views

iSCSI steps between 1Gb/s and 10Gb/s [closed]

So, I am in the process of building out a iSCSI system based off freeNAS. This is being connected to a few (around 20ish) ESXi 5.5 boxes. These ESXi boxes only have the boot drive and a few Gb of ...
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9 views

iScsiPrt errors preventing system from returning from display rest

I am encountering a weird error in Windows 7 x64 Ultimate SP1. At random intervals, when coming back to the computer after being away long enough for the screen to rest, it will instead come back to a ...
0
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1answer
37 views

MySQL intermittently fails to come up when data directory is configured on SAN via iSCSI

I am running Ubuntu Linux 14.04.2 on a Dell R610 Server. This box is used to host the MySQL service for my applications. The MySQL data directory is mounted on DELL SAN Equallogic so this box is also ...
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2answers
55 views

iSCSI or network share

Our new NAS has four network ports that are linkable and I would like to utilise that extra potential capacity. Should I; 1 - create an iSCSI volume, with its lower overhead, connect the main file ...
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29 views

How to automatically remount iscsi drive, after network errors on Vmware + FreeNAS

Is it possible to force Ubuntu to remount, rescan storage in time manner, to automatically mount it in rw mode? I have a Ubuntu virtual machine on VMware server. And have physical FreeNAS server ...
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1answer
121 views

Connecting Windows iSCSI initiator to Centos iSCSI target

Goal: To have my Linux VPS serve as an iSCSI disk for a Windows Why: Management of the storage space on a Linux box and to reduce cost of licensing. OS: Centos 6 (Target) Windows Server 2012 ...
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1answer
30 views

Storing backups on a remote filesystem

I have a FreeNAS solution, in which I'll would like to save my backups. Currently I was doing some scripting to rsync/tarball, but I want a something more easy to manage, so I figure out, to run a ...
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3answers
340 views

vSphere Datastore for specific datatypes: NFS or iSCSI

I am looking into improving performance in my vSphere environment. We are using a NetApp appliance with all VMs stored in Datastores that are mounted via NFS. It was suggested to me that, for some ...
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0answers
71 views

Can iSCSI and Internet work on same NIC? [closed]

I have a Synology RS815+ that supports iSCSI with 4 GbE ports. I have two Mac Mini's (2014) with built-in GbE and a TB to GbE adapter. All 8 connections are tied to the same switch, with client ...
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93 views

Can't attach iSCSI with multipathing in Citrix XenServer

Dear people of the world. I have a problem reattaching an iSCSI target on XenServer after a reboot. Whenever I try, I get several errors. Here's me in the attach screen on the redundant storage ...
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2answers
311 views

10Gb ISCSI to 1Gb server port

I have this setup in mind. Md3800i 4 10GBps Iscsi. 2 del r730 4 1Gbps ports. I will use this storage to backups and low profile mass storage. So i don't won't to put HBAs in the server. ...
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1answer
577 views

Poor iSCSI performance with SSD disks and 10 Gbe network

iSCSI Target Ubuntu 14.04 (Trusty Tahr) with 16 GB RAM and 16 core CPU as LVM backed iSCSI target using three Samsung SSD disks, each capable of doing 65k IOPS using an LSI 6 Gbit/s ...
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1answer
50 views

nova volume-detach fails silently, compute log shows libvirtError: invalid argument: no target device vdb

Using Openstack Havana, I'm trying to detach a cinder volume from a nova instance. Nova volume-list shows it as in-use: | 34b0ea26-f85c-4b62-8ebd-884b0e63e2d5 | in-use | filestore | 256 | None| ...
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2answers
160 views

How to know when to properly use iSCSI, NFS or SMB?

I have a File Server running Windows Server 2012 R2. It has four 6TB Western Digital RED drives. I want to host my Hyper-V Machines, WSUS (Windows Server Update Service) content and WDS/MDT deploy ISO ...
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2answers
82 views

Multiple iSCSI LUNs to one Server

I'm reasonably sure i'm ok to do this, but I would love some confirmation. Simple question, can I have two LUNs from the same SAN attached to the same server? More detail: I have a HP MSA2000 SAN, ...
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35 views

ISCSI drives suddenly lost partitions

We have a VM host, and each VM is given an ISCSI volume to boot off of. These ISCSI volumes are stored on a second server. Today, we had to reboot the VM host because ISCSI hosts kept going into ...
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2answers
233 views

Performance for ZVOLs presented over iSCSI?

I have the following setup for testing: HP Microserver N36L (Dual-core low-power Athlon64) 8GB ECC RAM 2-port Intel Gigabit NIC 4x3TB WD Green (5400 RPM?) 1 sata disk for OS image (FreeBSD 10.1) ...
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1answer
68 views

Multipath configuration is ignoring drives after /dev/sdaa, /dev/sdab, etc

I have a bare metal server running on Softlayer. It has many Consistent Performance iSCSI storage devices attached in a multipath configuration. One of the devices, represented by /dev/sdaa1 and ...
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542 views

XenServer 6.5 iSCSI MPIO with point-to-point links (without a Switch)

I'm doing some experiment with iSCSI MPIO between FreeNAS 9.3 and two XenServer 6.5 hosts. I would like to use iSCSI MPIO to serve as VM storage. Pretty common environment, but without a switch to ...
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1answer
34 views

OCFS2 “Heartbeat generation mismatch on device” error when mounting iscsi target

As said in the title, when I want to mount a iSCSI target on one machine I get the following error: (o2hb-3F92114867,7826,3):o2hb_check_own_slot:590 ERROR: Heartbeat generation mismatch on device ...
0
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1answer
348 views

iSCSI enterprise target and client both on debian give invalid iniatorname error

I have two Debian Wheezy machines and am trying to set up storage for one of them on the other's disk using iSCSI (they do not have synchronized users, so NFS won't work for this application). I have ...
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1answer
953 views

OpenStack Cinder: iSCSI login negotiation failure after reboot

I have a Cinder storage and controller node running on the same CentOS 7 box as Nova compute. Everything worked fine, until I rebooted. Now my instances can't mount volumes and I get the errors below. ...
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1answer
164 views

What is the proper way to shutdown an iSCSI target with connected clients?

iSCSI with two DRBD primary nodes is a bad idea to use if the two paths get concurrent write requests. But I am thinking about using this idea as backend storage for an ESXi 5.5U2 host. I already did ...
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1answer
61 views

VMWare 4.0 - Adding LUN from Server2012R2 iSCSI Target - Capacity 2TB, Available 102.40GB?

I have a Windows Server 2012 R2 hosting some iSCSI targets/LUNs from a local raided JBOD via Virtual Disks. I have created a thin provisioned 2TB VHDX in Windows and have added the target to VMWare. ...
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1answer
325 views

Optimal configuration with Synology as HA iSCSI backend for vSphere

I'm looking into purchasing a new storage backend for our VMware vSphere Essentials package. We have 3 ESXi hosts, currently mainly using DAS. The goal is to upgrade to Essentials Plus this year, to ...
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4answers
150 views

What trouble will I have when running a SAN past its support lifetime?

We are replacing a Clariion CX320 SAN because it is old (7.5 years). It has been otherwise very reliable. Yes, we have replaced a lot of disks, battery modules, and maybe even one of the ...
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78 views

Windows Server Backup does not seem to be able to backup iSCSI drives

Windows Server Backup does not seem to be able to backup iSCSI connected disks! Error returned if using volume descriptor is: The path specified by ...
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2answers
292 views

Debian 7: HA NAS with pacemaker, drbd and iSCSI

I currently am trying to make a highly available NAS under debian 7. I am using following packages: drbd8-utils iscsitarget iscsitarget-dkms pacemaker corosync ...
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446 views

iscsi not working after host reboot

I have a host that is acting as both an iscsi initiator and target. It's an OpenStack box that acts as both the storage node (cinder) and also as a compute node. There is also another compute nodes on ...
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0answers
252 views

Best practices in connecting EMC VNX iSCSI storage [closed]

We have an EMC VNX5200 with 2 service processors, each having 4 iSCSI ports, 1 data mover (with 4 ports) and a control station, all of which is plugged into two stacked switches. What are the ...
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1answer
74 views

Hyper-V 2012 R2 and File shares

I currently have a 2008 R2 hyper-v cluster but I am going to be building a new 2012 R2 failover hyper-v 2012 r2 cluster in the next few weeks and wanted to get some opinions on running a large file ...
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81 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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187 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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1answer
310 views

Windows 2012R2 hyper-v guest diskless - boot from iscsi guide?

I am attempting to build a generation 2 W2012R2 hyper-v server guest that, configured with no disk or vhd , will select it's iscsi o/s disk via Microsoft dhcp and boot Windows 2012 R2. Note that I ...
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109 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 ...
2
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1answer
181 views

High availability using Fibre Channel and iSCSI in vSphere

I'm having a hard time understanding shared storage for high availability in vSphere. I have the following kit: 1 x Mac mini (ESXi 5.5 - part of vSphere) 1 x White box PC (ESXi 5.5 - part of vSphere ...
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30 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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1answer
44 views

iscsiadm discovery gives this error: “Try `iscsiadm --help' for more information.”

Many sets of instructions (e.g. Softlayer) provide this command for discovering a new iSCSI device: iscsiadm –m discovery –t sendtargets –p 255.255.255.255 The man page for iscsiadm gives this ...