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Questions tagged [iscsi]

iSCSI - SCSI over IP - mount disks across the network

iSCSI is Internet Small Computer Systems Interface, and is a standard for sending SCSI commands across the IP layer of the TCP/IP suite.

Unlike ATA over Ethernet, (ATAoE) iSCSI allows you to use the same network link for mounting remote storage as well as communicating with the rest of the network.

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disk cache mode: "write back" vs "write through" in iscsi context

I have a few iscsi drives connected to a debian. The iscsi drive (sde,sdg, one for each path) and the multipath device (dm-25) have the "write_cache" property (/sys/devices/virtual/block/dm-XX/queue/write_cache or /sys/block/sdX/queue/write_cache )…
user3615294
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steps to troubleshoot server when it fails to attach and mount LUNs

How to troubleshoot when Windows Server 2012 R2 connected to SAN via iSCSI fails to attach and mount the LUNs from the iSCSI target
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sg_map & lsscsi showing old storage version

I am using SUN storage and recently upgraded/refreshed my ISCSI LUN storage. We have replicated old storage to new storage and attached to our servers. I can see at SUN storage side that storage is attached to server and also from server when I run…
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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 expansion, with 12x2TB per cabinet and I'm planning…
Adam
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Windows Server 2003R2: automatically attaching an iSCSI disk at each startup and setting network shares?

I have a Windows 2003R2 Server soon to be replaced. The server was just connected via iSCSI to a WD MyCloud 4100 NAS, using the Microsoft iSCSI initiator. A large number of directories exists on this disk. And most of the root-level directories are…
carmik
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Setting up iSCSI on an external hard drive with 4K sector size

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 on that external drive (although I can…
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high bandwidth usage iscsid, who's doing it?

We run a couple of onapp nodes that connect through iSCSI to a SAN. This is now using up all bandwidth and we want to know where it is coming from, we have been search for days now and would like to ask the community. iftop: x.x.x.x => y.y.y.y …
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Is the iSCSI initiator installed and running by default on Win 2008 R2 and Win 2012

Basically, the title says it all. I really appreciate your responses.
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iSCSI drive running at 100% but SAN and Network are not

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. Both NICs are connected at 1Gbps. We are running…
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how to configure ISCSI fault tolerance in ubuntu 12.04

how to configure ISCSI fault tolerance in ubuntu 12.04 Anyone has a tutorial or steps to?! thanks in advance knowing that initiator and server are ubuntu
Maythux
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Is nfs good to share disk images over the internet?

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 iscsi server in order to introduce a new target…
user2358943
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Cache in Storage array

Hi I just started working in a Storage Lab. I am new to Storage Area Networks, I did lot of searching on Internet about this. I have two doubts : How can we know whether a Storage array has a cache or not. (with iSCSI protocol) How to know if any…
user1457896
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