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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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Successful login with iscsiadm on target still doesn't create block device

I've set up an experiment to test iscsitarget and initiator, which at some point worked. Later, I turned the setup back on and much to my dismay, the initiator machine stopped making block devices for its successful logins. As far as I know, I…
Halfgaar
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Is SMB safer than iSCSI for connection to a NAS?

Recently one of our customers undertook an IT network audit from another (third party) IT audit firm. The results were generally good, although they pointed out that we had used iSCSI client on Windows Server as a means of connecting to the NAS,…
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Storage Setup for iSCSI/NFS servers

We are preparing to replace our storage servers (iSCSI+NFS). The current servers are Debian Wheezy using mdadm+lvm2 for storage, and failover using drbd and heartbeat (never got heartbeat to work). For our replacement servers, I would like to use…
Rod
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How to find whether the disk is thin provisioned or not?

I have mapped IScsi volumes into my windows 2016 server. I have created disk out of them. Now i need to find whether the disk is thin provisioned or not. I am trying with below cmdlets Get-Disk and Get-PhysicalDisk But no luck. How to find…
Samselvaprabu
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Synology HA active-passive performance and failover

I have two Synology boxes (DiskStation DS1817+) that are running in Synology HA mode filled with WD Black 4TB drives in RAID10. They are connected to my cluster over iSCSI providing mainly backup storage, file share (in a separate File Server VM)…
Mind Parallax
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Using a VMWare Server to host ISCSI drive

Hi I'm not really a network guy (I'm a dev). I'm playing around setting up a used Dell R710 as an ESXI server in the office for testing and development. We use VirtualBox for our local development environment and wanted to experiment with keeping…
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How to connect two Dell storage arrays to a to a Dell Poweredge server (daisy chain vs direct)?

I purchased two Dell MD1000 storage arrays together with a Dell Poweredge 1950 server and need help setting them up (I am a complete novice to SAN/iSCSI). The Poweredge server has two SAS SFF-8470 connectors. Should the two storage arrays (which…
Greg
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SAN, ISCSI and Multipath (MLAG?)

I'm a bit confused regarding the setup of a SAN with ISCSI and multipath. We are upgrading our network to 10Gbit, so there are 2 10Gbit switches that are configured with MLAG for normal ethernet traffic. LAG groups are made on the appriorate NICs,…
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Tuning Open-iSCSI initiator settings for VM LUNs

I have a bunch of VM servers running Xen VMs from iSCSI LUNs mounted in the Dom0 host via Open-iSCSI. It's just a simple single-path setup (redundancy is on the target side via clustered storage and a virtual IP) I'm considering using the settings…
Kamil Kisiel
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Can you use your own drives on Dell PowerVault MD3000i?

I would like to use my own drives in the Dell PowerVault MD3000i. Does anyone know if you are able to? We are looking at different SANs for our VM farm and would rather be able to replace a drive in 10 minutes. This will also reduce the cost of…
Chris
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SAN Performance Slow

I have an iSCSI HP P2000 loaded with 12 x 300gb DP SAS drives. This is connected to 2 DL385 servers with 64gb RAM running XenServer. The SAN network is multipathed via 2 gigabit switches (4 x copper links from the P2000 to each switch, then each…
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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 different feedback from the vendors on what's needed for…
Gregory Thomson
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Which events specifically cause Windows 2008 to mark a SAN volume offline?

I am searching for specific criteria/events that will cause Windows 2008 to mark a SAN volume as offline in disk management, even though it is connected to that SAN volume via FC or iSCSI. Microsoft states that "A dynamic disk may become Offline if…
Jeremy
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Completely disjoint iSCSI networks vs dedicated switches and VLANs

I'm looking for best practice or pros/cons for deploying an iSCSI storage network. The two options are: A completely disjoint iSCSI storage network Dedicated switches with a separate VLAN for storage, but otherwise connected to production…
MDMarra
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How good is failover of the iSCSI target on a two-node linux san?

I'm evaluating the possibility to use two off the shelf servers to build a cheap iSCSI redundant SAN. The idea is to run linux, pacemaker, and an iSCSI target - something like the SAN Active-Passive on linux-ha-examples. The same page scares me a…
Luke404
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