Server Fault Stack Exchange
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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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Removing an iSCSI Target - iSCSI initiator 2.0 on Windows Server 2003 R2

For the life of me I cannot figure out how to remove an iSCSI target (Dell Equallogic SAN) from a Windows Server 2003 box. The volume shows up in Windows as drive letter Y. Using the iSCSI initiator, I can remove the Target Portal, but cannot…
DWong
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Home-grown SAN -- topology ideas?

I'm interested in hand-rolling a SAN solution on Linux with the following technologies: iscsi mdadm raid lvm multipath xfs/gfs/??? teamed NICs Hardware-wise, I'm thinking of 2 x gigE (or better) switches with multiple gigE NICs on both the targets…
Brad
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Linux tool/command to check file system performance

What is the simplest way to check read/write performance to a specific location (e.g. a mounted iSCSI device). I suspect I can't use hdparm because that's lower level. Am I right?
pufferfish
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Cloud vs traditional iSCSI, xen, drbd, etc

I was wondering, how does a 'traditional' virtual machine setup with storage on iSCSI, with a fallback using DRBD, nodes with Xen installed the 'normal way', storing their images on the iSCSI target, etc. compare to Cloud solutions, like Ubuntu…
Halfgaar
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How to upgrade an iSCSI Switch stack with minimal downtime?

We have several Dell 6248 swtich stacks (of 3 each) that form the backbone of our iSCSI Storage network. We need to perform firmware updates on the switch stacks, but are concerned about the downtime required. By way of information our storage is…
Guamaniac
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Rough estimate for speed advantage of SAN-via-fibre to san-via-iSCSI when using VMware vSphere

We are in the process of setting up two virtualization servers (DELL R710, Dual Quadcore Xeon CPUs at 2.3 Ghz, 48 GB RAM) for VMware VSphere with storage on a SAN (DELL Powervault MD3000i, 10x 500 GB SAS drives, RAID 5) which will be attached via…
Dirk Paessler
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Setup redundant iSCSI network with 2 switches, SAN and ESX

I am in the process of re-doing the iSCSI network at my work. We currently have the following equipment: 1x Dell PowerConnect 6224 switch 1x Dell PowerVault MD3000 SAN connected to 2x Dell PowerEdge 1950 servers providing iSCSI 1x Dell PowerVault…
DanielJay
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Ubuntu iSCSI partition is not visible in lsblk

Recently I have created iSCSI Target with /dev/sda1 partition (1Gb with ext4 filesystem created), and iSCSI Initiator. Every service works correct without visible errors. Initiator successfully logged in to get target device. Output of discovery…
Петр Воротинцев
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Zimbra - NFS vs. iSCSI

We are going to be migrating our mail server from postfix/courier to Zimbra over the next few months. We've run a prototype server over an iSCSI LUN exported from a Dell Equallogic quite successfully. The Equallogic isn't our 'production' SAN, a…
petertonoli
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How to easily share local partitions between multiple computers

I am looking for advice. I have a few CentOS 7 virtual machines with ISCSI disks mounted as LVM partitions for application log storage. These virtual machines are already highly loaded (CPU and RAM), and I am a little worried about introducing an…
SinaOwolabi
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Slow ISCSI performance on Windows 10

So i have this diskless / pxe booting environment with 28 clients using a program called ccboot. Client is using kabini based board A68n-5200 Essentially it's 28 clients communicating using ISCSI protocol with a single diskless server running win…
denywinarto
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What is the Microsoft iSCSI initiator target limit?

What is the Microsoft iSCSI initiator target limit ? I mean - how many disks from single iSCSI server can the initiator handle ? I have a FreeBSD 11.x kernel iSCSI target, and hundreds of disks configured, which the iSCSI server serves to hundreds…
drookie
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Microsoft iSCSI target server 2016 failover cluster doesn't work in Server Manager after transfering roles

I have a pair of Server 2016 VMs in a failover cluster running the File Server and iSCSI Target Server roles. Previously each role was separately defined in the Failover Cluster Manager, but due a need for the iSCSI Target Server to be able to store…
Muh Fugen
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only one of two SFP ports reachable on iSCSI SAN

I have a server with HP NC523 dual 10GbE network card and HP MSA1040 storage with dual 10GbE iSCSI-controller. Both ports on NC523 are configured as a bond. The ports on MSA have different IP-addresses. I want to configure this system to use 20Gb…
Kris_R
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Complete High Availability System

I'm in the process of configuring a LAMP server but want to make sure it'll be ready for expansion for the future. Here's my current setup.. Two physical windows servers clustered with Hyper-V Two virtual machines, one for Apache and another for…
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