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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.

852 questions
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Expanding iSCSI LUNs (NTFS)

I have a 4TB iSCSI LUN that formated as NTFS in Windows 2008. I've shared this formated volume as a folder over SMB. When the capacity of this volume is not enough, I have to add more iSCSI LUNs, but the end-users must see only the folder that I've…
Fatih
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Network on Hyper-V VM for iSCSI storage for DPM 2010 testing

I would like to add a iSCSI drive to one of our hyper-V VMs. We have the iSCSI network configured for the Hyper-V box, I just wanted to double check how can I achieve this for a VM on this Hyper-V box. Add extra NIC to VM (for iSCSI) Using Virtual…
Virtual Techie
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ISCSI sessions appear from nowhere

I am using Win2008 32bit Ent. running in Hyper-V with 2 LUNs over ISCSI connection (this is a MS cluster with one LUN being quorum and second as a storage). In ISCSI -> target -> details I see multiple sessions from same target (currently 7),…
Maraca
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Getting Partial / No Redundancy on VM's created on latest datastore

First some background. I'm in the process of upgrading my ESX servers from 3.5 to vSphere 4 and so far I have setup the new vCenter Server. Before I start the upgrade of the ESX, I needed more storage so I created 3 datastores from available space…
Germano
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Server 2008 R2 - multiple iscsi software initiators cause volumes to lose persistence

I've set up a test environment with server 2008 R2 (virtualized on xenserver) for a server that will use many iscsi volumes (>80) attached in production. in testing, we ran across an issue where the iSCSI initiator would not attach any more…
smithian
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Running OpenFiler inside XenServer to provide Storage to other Xen instances

I'm setting up a Testbed to run some tests on Xen, since I would like to use live migration I was thinking about using iSCSI as a storage, but I only got 2 machines for my quick setup. So my idea is to run OpenFiler inside XenServer A to provide…
Sideshowcoder
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initiatorname.iscsi is overwritten

I use RHEL 8.8 on my machines. I run the following command: echo InitiatorName=$(/sbin/iscsi-iname) > /etc/iscsi/initiatorname.iscsi It sets correctly the name. But after some time file is set to default. Something is overwriting this file. Do you…
user148468
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Distributed file system network booted hosts

Having task to utilize old servers as a backup distributed file system like MooseFS I see a collision in whole concept: DFS is fault-tolerant and keep track of HDD status by itself, so any file system carrying data is better used without RAID.…
kab00m
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Non-valid paths in "multipath -ll" output

I see paths that are no longer valid along with valid ones. How do I prevent them showing up in the output. I expect four valid paths. The volume was earlier exported with LUN 13 and later 14 which shows as failed paths in the below output. The…
Hem
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Can't connect to other volumes (Dell Equal Logic SAN Headquarters)

Investigating an older server and disk array (Dell EqualLogic PS4100). The server has Dell EqualLogic SAN Headquarters onit. In Group Manager on the server I can see 5 out of 7 volumes as online/active. I can see the different disk usage stats for…
strj500
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Linux: Export block device over eSATA

I run a bunch of servers on no budget. I have several fast 1U ones, but they haven't enough storage and no more can be added. I want to build a DIY SAN running Linux with some SSD's. Mounting storage from the SAN on the servers would be possible…
friism
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Recommended IP ranges for Dev SAN with 2 x switches

I am setting up a small Dev environment with 5 hosts, 2 ubiquity switches and a qnap NAS. One switch for the normal TCP traffic and one for iSCSI. I was wondering the recommendation for management of the switches. Unifi switches are managed by a…
Anthony Horne
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Where do I find a script to check a Ceph iSCSI gateway configuration?

On a Ceph cluster with iSCSI gateway we have an issue with gateway configuration changes being applied partially. The result is a broken gateway.conf, which goes unnoticed until (possibly weeks later) a gateway is restarted, for whatever reason, at…
reinierpost
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Why are workstations trying to access file server port 445 on the isolated iSCSI subnet?

I have iSCSI set up on an isolated set of switches in MPIO config. The file server VM uses all 4 ports on the host. 2 for iSCSI MPIO each plugged into a physically isolated switch that only has the NAS connected, and 2 bonded for LAN plugged into…
naps1saps
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write back cache on network scsi disks

I have a machine in the cloud which has a persistent disk. For the host, it appears as a SCSI disk. I see the following seting: $ cat /sys/block/sda/device/scsi_disk/0\:0\:1\:0/cache_type write back What does this mean? Does it mean that on this…
MK.
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