iSCSI - SCSI over IP - mount disks across the network

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1answer
259 views

iostat to analyze iSCSI mount

Is there a way to analyze the IO wait on a iSCSI mount from the machine on which the iSCSI share is mounted? I understand the local volumes can be analyzed, but, we have one particular directory on ...
5
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1answer
587 views

100% packets dropped on first RX queue on 3/5 raid6 iSCSI NAS devices using intel igb (resolved)

Edit : The issue is resolved. The Queues in question have been used for Flow Control Packets. Why the igb driver propagated FC packets up to have them dropped (and counted) is another question. But ...
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327 views

PXE Boot an ISO with iSCSI information

High Level: I'm using pxelinux.0 and memdisk to boot a Windows PE iso. I then connect to an iSCSI lun and apply a Windows WIM. More information: Normally netboot/i is used to automatically assign ...
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1answer
622 views

tar operation taking extremely long time

Wonder if anyone can help with this issue, we running RHL 5 on HP Proliant DL580 G7 it has 2xCPU @1.87GHz 6XCORES each & 64GB RAM. lately backing up a directory (62GB) with tar (tar -czvf ...
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708 views

iSCSI strange write performance from ESXi to QNAP TS559 and TS869

I have a strange performance issue with VMWare ESXi 5.0 and QNAP NAS (I tried with both a TS559 and a TS869 with the same result). The issue is this: I enabled iSCSI on the QNAP and created a ...
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1answer
451 views

Why MPIO instead of 802.3ad Team for iSCSI

Doing my first server to iSCSI target and I thought i would be off to a running start by teaming my NIC on the server (conventional 802.3ad team). However, from many online sources I see this is NOT ...
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1answer
846 views

Dell Compellent SAN with ESXi 5.1 iSCSI

I have a Compellent SAN that I am trying to point to my ESXi server through iSCSI. In the Compellent UI: i've created a volume. It, of course, says the volume is offline until you map it to a server. ...
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2answers
314 views

Networking with VMware, physical adapters and iSCSI

New VMware user here, setting up my first environment. I have an ESXi host that has four physical NiCs (NiC0, NiC1, NiC2, NiC3). I have installed ESXi, the VCVA appliance, and several VMs ...
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3answers
223 views

cheap software iSCSI with server mirroring [closed]

I am looking for free / cheap solution to create iSCSI for hyper-v cluster. I have the free Hyper-V Server, free management tool for w8 and few of my own PowerShell scripts and everything is working ...
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2answers
383 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 ...
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1answer
470 views

How to set MaxRecvDataSegmentLength on Solaris 11 iSCSI target (COMSTAR)

Our system is Solaris 11.1 with COMSTAR iSCSI target. We would like to increase MaxRecvDataSegmentLength iSCSI parameter on the target but can't find a way to do it, although certain blog records on ...
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1answer
31 views

md3222i only single data stream?

We've setup an md3220i SAN to be used against vmware 5.1. When inside a VM on this SAN we tried copying a file multiple times creating multiple/sessions streams. When doing this, it's only the latest ...
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2answers
423 views

Can't find ISCSI drives after NAS firmware update

This is what it's all about: I've got a Linux network with an actual hardware server running two separate virtual machines and a QNAP NAS T-459 Pro+ as a fileserver. Since updating the QNAP firmware ...
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0answers
107 views

share an iscsi target thru samba

i just built an Openindiana/Napp-it box and i dont really want to get into Solaris ldap client setup. Does it sound doable to create a linux vm, set up samba on it, then connect to an iscsi target ...
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1answer
339 views

iSCSI and NFS file locking and concurrency

I've got a linux host that need to mount a data share located on a NAS. The choice is between NFS v3 (NAS limitation) and iSCSI. The initial idea was to have a NFS mount to the file server that ...
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4answers
1k views

iSCSI SAN for vCenter Cluster

I'm looking to setup a SAN for a VMWare vCenter cluster of ESX hosts. I'd like it to be the primary storage device for VMs. There will be up to 10 hosts in the cluster eventually. I'm creating a ...
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1answer
425 views

Attach storage drive in a VM via iSCSI initiator or VHDX on the Hyper-V host

Our current 200-user infrastructure is based upon XenServer and a StarWind iSCSI SAN. The C: drives for the virtual server's OS are mounted in XenServer SR volumes which are in turn virtual hard disks ...
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1answer
634 views

iscsi concurrent access / iscsi volume shared access on NAS

I having a 7-bay NAS box with Raid-5 (5.3TB usable) with netgear gigabit Ethernet switch to connect the hosts (3 windows7 machine Specs: i7 / 16GB RAM / 1TB HDD / gigabit Ethernet NIC). (All of the ...
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2answers
183 views

Would storing logical volumes on a ZFS storage benefit from caching?

What I'm planning to do is having a ZFS storage connected to my network. Attaching it with either iSCSI or SRP to the hypervisor server. And storing KVM images (logical volumes) on it. Would this ...
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2answers
166 views

When is iSCSI Required or Most Useful? [closed]

Background: I have two SANs (Dell Equallogic PS6100E, though not necessarily an eql. question). I have a NAS that connects to them (FS7600). That NAS is on the regular network lan, but has it's ...
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0answers
309 views

DFS CIFS shares not responding to demand

I'm hoping someone can help me here with understanding how a windows file copy differs between a copy using terracopy (or similar) and what that means for contention on my NAS head. Background: ...
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1answer
463 views

Dell r900 and SFP+ HBA

I'm trying to pair up the parts and pieces to get an already purchased Dell Equallogic PS6010E going, with a couple existing Dell r900 servers for ESXi 5.0,and keep running into show-stoppers. The ...
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1answer
468 views

Mirroring iSCSI target to slower drive, asynchronous RAID or block-level replication?

I'm planning on setting up a test iSCSI export on my NAS which will be used by a KVM virtualisation host to store all guest volumes and data. My NAS box is a self-build running CentOS. The device ...
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50 views

Registry change on a key a server does not have

I have written a script that queries the registry on multiple servers looking for specific keys (dealing with iSCSI). After the query, I need to make changes to some of the keys in: ...
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1answer
544 views

Second NIC “not working properly” on diskless Server 2012

I've got (after a considerable fight) a diskless Server 2012 running via the MS software iSCSI initiator being booted via gPXE chained from the NIC's PXE. However, now that it is booting properly I ...
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2answers
2k views

ZFS iSCSI and free capacity in VMFS

I use ZFS in FreeNAS 8.0.4 and use iSCSI to provide a LUN to Vmware ESXi 5.0. I post it at http://forums.freenas.org/showthread.php?10990-Memory-utilization-and-performance-problem/page4, but I ...
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1answer
2k views

Can't boot Windows Server 2012 from iSCSI

I'm working out how to install various OSes onto diskless servers to be run via iSCSI. The servers have no special hardware for this (no iSCSI HBAs etc.) I briefly played with Windows Deployment ...
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1answer
381 views

Can the Microsoft iSCSI Software Target back an LU by a physical disk?

In short, I want the Microsoft iSCSI Software Target to expose a physical disk (from the OS' perspective) as an iSCSI unit, instead of using a file (a Microsoft-proprietary "virtual disk") as the ...
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2answers
608 views

How to manage isolated/dedicated iSCSI network?

This is more of iSCSI switch setup question. I have an isolated iSCSI storage network which includes 2ea managed switches, and setup for redundancy. I could just connect a management pc to one of ...
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1answer
139 views

scripted resize kvm images

I'm examining the possibility to script the resizing of a kvm image. The goal is to give our customers the possibility to upgrade their vps online. So for instance if a customer has a vps of 10G then ...
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462 views

Windows Server 2012 - Hyper-V - iSCSI SAN - All Hyper-V Guests stops responding and extensive disk read/write

We have a problem with one of our deployments of Windows Server 2012 Hyper-V with a 2 node cluster connected to a iSCSI SAN. Our Problem Our problem is that for some reason all of the VMs stops ...
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1answer
104 views

Installing ESXi/ Hyper-V using NIC supporting iBFT

We can install ESXi to a iSCSI target if we have NIC that supports iBFT. But what I am trying to see is if we can install ESXi by booting off an iSCSI target which is a mounted ISO? How about Hyper-V ...
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0answers
3k views

iSCSI issue; “the media is write protected”

i've got some serious issues with w2k8 r2 standard and iSCSI controller. i'm running dell server, connected via ethernet to synergy NAS, which is handling LUN via iSCSI. i'm using ms iSCSI initiator ...
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2answers
1k views

Can a Dell Equallogic have an SMB share or are they only iSCSI?

Is it possible to set up an SMB share on a Dell Equallogic 4100, or is it solely iSCSI? I can't find anything but iSCSI. I would like to access the data over SMB (\\myequallogic) shares as opposed ...
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2answers
408 views

Adding raw storage - iSCSI or VMDK?

We have about 10TB of files that we use on our fileserver. I'll be setting up a new server with more space and better backups. We have a SAS box with 24 drives connected to OpenIndiana server ...
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4answers
218 views

Is is possible to span “infinitely” across multiple Dell Equalogic devices?

I was looking at Dell Equalogic devices, the PS4100E. It says you can have two PS4100 boxes for 36TB each. Am I reading that right? What if I want to have more space? Can I span to more 4100E ...
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1answer
273 views

Xen: iSCSI initiator in dom0 VS in domU with BCM5709 ethernet cards

In the future we'll move from local storage for our VMs to an iSCSI-based solution. Our server vendor supports Broadcom NetXtreme II 5709 cards with dual gigabit ports and TOE + iSCSI acceleration. ...
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2answers
263 views

large iSCSI disk a good idea on an entry-level “unified” NAS?

I am working on implementing a D2D backup solution for ~150 computers based on Crashplan ProE (no cloud storage). For the storage backend, I picked up an Overland Snapserver DX2 head unit and one ...
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1answer
326 views

NetApp Flex Volumes (Flexible Volumes)

I have an aggregate with a 150 GB Flexible volume with a 3 TB capacity and a growth increment of 10 GB. If I want to Copy 1.5 TB of data to the volume, it tells me there is not enough disk space. ...
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2answers
165 views

iscsi versus non-iscsi san?

We are considering adding a SAN. I have two choices right now, the Dell MD3000 and the Dell MD3000i, 15 x 146Gb san drives. Naturally the latest model is more expensive (2x as much), but can ...
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2answers
461 views

Can I attach iSCSI to VMware ESXi without licensing?

I have multiple ESXi hosts, managed individually because I have yet to buy licensing. Can I tie my iSCSI SAN to these hosts and utilize it for VM storage and run VM's on that iSCSI device?
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1answer
943 views

How do you get iSCSI multipath to discover new LUNs that have not been partitioned yet?

Oracle Linux 6.3 iscsi multipath shows LUNs with existing file system but not the raw block devices that have not been partitioned yet. When I run multipath -ll it will show a LUN that has previously ...
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2answers
724 views

links between switches for iSCSI

We inherited a SAN/vmWare/iSCSI setup with both Dell and HP equipment purchased for it, but not fully setup, and we need to get some additional switches to make it all work. But we're getting ...
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2answers
583 views

VMWare vSphere 5: 4 pNICs for iSCSI vs. 2 pNICs

New SAN for me, never used before: it's an IBM DS3512, dual controller with a quad 1GbE NIC per controller that a client bought and needs help setting up. Hosts (x2) have 8 pNICs and while I usually ...
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2answers
888 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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1answer
445 views

Dell Powerconnect 7024 and iSCSI on Dell PS6000

I am setting up an iSCSI environment for a Windows Server. I will be using 2 Dell Poweconnect 7024s , 1 Dell PS6000, and a Windows Server (2008 R2). I have more experience in fiber switches and EMC ...
2
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1answer
432 views

iSCSI write cache

Is there a way to setup on a Linux iSCSI initiator a local disk partition for write cache ? The data would be first written on some high performance local disk and then in a second time on capacitive ...
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2answers
316 views

iSCSI using uplink ports on switch

Do the uplink ports on switches typically work okay as iSCSI ports? We're adding a 10gb iSCSI SAN, and want to get a combo switch (48x1gb & 4x10gb SFP+ uplink ports) and use the 10gb for the iSCSI ...
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2answers
746 views

iSCSI Distributed RAID?

Thinking about setting-up as distributed RAID array over iSCSI. Has anyone else tried this, if so what was your experience. To be more specific I am thinking of a couple of CentOS servers each with ...
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1answer
212 views

iSCSI - what's faster?

I have a DroboPro that is currently connected to a GS748TS switch. Also connected to the switch is a server and few workstations. Which method would be better in performance? Add a NIC to the ...