iSCSI - SCSI over IP - mount disks across the network

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556 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 ...
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0answers
77 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 ...
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2answers
768 views

How to force iscsi initiator to login only once

Trying to setup a few CentOS nodes to connect to a Dell MD3600i array, I'm running into the issue that the MD3600i shows 4 different portals (with different IP addresses). When I launch the initiator ...
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0answers
2k views

Volume manager of Windows Server 2008 R2 does not show all iSCSI volumes

We set up a backup server (Windows 2008 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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2answers
420 views

Connecting to EqualLogic with Starwind Starport Initiator, login trouble?

We have a working iSCSI SAN, an Equallogic, which runs fine with the Microsoft iSCSI initiator. With the Starport Initiator, we can't even connect. There's no login needed, neither local nor LDAP. ...
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1answer
3k views

iSCSI target volume does not show on Windows 7 iSCSI Initiator

I have a Windows VPS sitting in a DC and another Linux box sitting in another data centre. My Windows VPS (running on Windows 7 64 bit) have a small hard drive and cost a lot to upgrade, and the Linux ...
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1answer
299 views

Does the FreeNAS target make use of iSCSI offload cards?

When using a FreeNAS as iSCSI target, would it use the iSCSI offload engine on cards that have it, or is it an initiator-only feature? For clarification, I want to know if a supported iSCSI offload ...
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1answer
3k 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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2answers
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 ports. ...
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2answers
3k 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 ...
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0answers
110 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 ...
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1answer
357 views

iSCSI target rebooting causes initiators to reboot as well

I'm running a couple of iSCSI Targets with OCFS2. I had to reboot my iSCSI Target (the physical iSCSI Target) due to some hardware changes and it caused all the initiators to reboot. I want to prevent ...
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1answer
6k views

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

My server info: 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 found. So I run # ...
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1answer
92 views

iSCSI on Windows Server 2003 data not showing on Windows Server 2012

I have a Western Digital My Cloud EX2 drive with 4TB RAID 1. I created a iSCSI Target on the disk and set up 2 initiators. One on Windows Server 2003 and one on Windows Server 2012 R1. My purpose ...
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2answers
107 views

Providing shared file level storage from a SAN

I'd like to get some advice on a system I'm setting up. I'm not quite sure which way to proceed. The goal is just some basic user storage space (Clients are Linux, Windows, and mac) that is baked by ...
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1answer
142 views

Persistent ESXi iSCSI datastore from guest VM based target? [closed]

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
186 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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0answers
17 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
447 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
4k 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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1answer
266 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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3answers
7k views

How to best tune Dell PowerVault MD3600i SAN/Initiators for best performance?

Recent owner of a Dell PowerVault MD3600i i'm experiencing some weird results. I have a dedicated 24x 10GbE Switch (PowerConnect 8024), setup to jumbo frames 9K. The MD3600 has 2 RAID controllers, ...
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1answer
40 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
421 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
3k views

iSCSI / SAN / Cluster / multiple NICs failover

Got a problem with NIC failover with iSCSI. Setup: A server with 3 NICs. One NIC is local network, other 2 are SAN. Using Microsoft iSCSI Initiator. A managed network switch. A QNAP SAN, connected ...
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1answer
108 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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0answers
1k 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
165 views

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
302 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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2answers
386 views

Bare metal boot over WAN? [closed]

Is there a service offering iSCSI/iPXE boot targets over the Internet? i.e. on a blank machine with an internet connection available to it, it can be configured to look at a public internet host and ...
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2answers
1k 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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0answers
39 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 ...
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2answers
41k views

LV Status: Not available. How to make it available?

I connect an iSCSI target, create a Physical Volume and Volume Group on it. Then I create an LV, and mkfs.ext3 /dev/vg00/vm and all that works great. Then I disconnect the target iscsiadm -m ...
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1answer
69 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
87 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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3answers
3k 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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1answer
32 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 ...
4
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3answers
2k 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
102 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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4answers
200 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 controllers,...
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9answers
3k views

InfiniBand Storage

I'm contemplating the next restructuring of my medium-size storage. It's currently about 30TB, shared via AoE. My main options are: Keep as is. It can still grow for a while. Go iSCSI. currently ...
0
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1answer
85 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
1k 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
337 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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2answers
1k 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
246 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 /dev/...
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0answers
1k 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 ...
0
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1answer
114 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 (...
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4answers
1k views

STOP 0x7b booting from iSCSI

I've a Windows 2008 SBS running. It boots of iSCSI. That setup worked for months until yesterday. I intended to reboot and gained a: STOP 0x0000007b INACCESSIBLE_BOOT_DEVICE and no idea why. My setup ...
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2answers
587 views

iSCSI multipath: should I keep all portals configured, even unreachable ones?

Sometimes when you connect to a multipath'ed iSCSI target you will have access to only some of its portals. This is common when the initiator is directly connected to the target's ethernet ports, as ...