Questions tagged [storage-area-network]

A SAN is a Storage Area Network, for providing block-level access to storage subsystems across a network.

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1answer
72 views

can I share the same datastore between different VMware 6.5 clusters?

Is it possible to share the same datastore between multiple VMware clusters of the same version (both 6.5 or both 6.7)? It is the norm to share the datastore between multiple hosts in the same ...
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1answer
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Should i partion 100% of my san's HDD's or leave some unused?

I am new to posting here but have been reading and utilizing your extreme brains over the years so Thank you all for being so generous!! I just bought a new Synology NAS for my domain and i am ...
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2answers
185 views

Kubernetes cluster shared storage and backup solutions

Which shared storage solutions are common for Kubernetes cluster to implement shared storage persistence for containers? NFS on NAS / iSCSI somehow? How do you backup the data on a Kubernetes with ...
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1answer
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Can I dynamically expose an entire SCSI host over Fibre Channel, preferably in Linux

Is it possible to expose an entire SCSI host dynamically (an LSI HBA or RAID card) over Fibre Channel, if so how? Preferably on Linux (perhaps targetcli) and with disk hotplugging support. (i.e. ...
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What differences are between a NAS, a shared disk file system on a SAN, and a distributed filesystem?

https://en.wikipedia.org/wiki/Clustered_file_system#Network-attached_storage says Network-attached storage (NAS) provides both storage and a file system, like a shared disk file system on top of ...
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1answer
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Linux goes to swap while plenty of RAM installed

I have a linux box that is used as SAN storage. It is equipped with 14 SATA HDDs and the only software it run is iscsi target and zabbix agent. This is physical box, not VM. The RAM size installed is ...
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1answer
33 views

SAN volumes not showing in new cluster

Some background.... We have Two hyper-v hosts running server 2012r2 with a number of guests. Msa1040 SAN with two disk pools The hosts are a two server cluster The two hosts connect to the san via ...
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CEPH on 10Gbit QNAP NAS [duplicate]

I am planing to setup a storage cluster for CEPH with a very limited budget. Fast networking connection is essential for a CEPH cluster. So the idea came to my mind to use a low budget NAS with fast ...
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3PAR 7400 cli setup

Unfortunatelly we don't have a GUI so we use cli. How to allocate physical disk space to free space? I tried servicemag, admithw,admitpd cmd but freespace (showspace) is equal 0 3PAR01 cli% showsys ...
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Configuring MPIO on Windows to remove duplicate disks

We have shared some storage from a EMC Unity SAN to Windows Server 2012 R2 to use with Veeam. In Disk Management, there are multiple disks listed with the same size. From previous systems, this is ...
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1answer
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Securely delete individual files from virtual drive on SAN

We have a Windows Server guest OS running on vSphere which has logical drives that ultimately reside on a 3PAR SAN. An auditor has suggested that after deleting sensitive files on the VM, we should ...
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1answer
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How to Expand Server Storage to Dell PowerEdge With a SAN?

I have recently bought Dell Poweredge T410 server with a Perc 6/I RAID controller to get some hands on experience  with server hardware and play around with Windows Server OSs. I've been looking at ...
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Mounting Nimble SAN over FCOE in RH8

I have a Nimble SAN which is connected to two HPE servers (in a Synergy Frame). I can see the interfaces are "Online" with fcoeadm. On the SAN I have created two volumes, one for server1 and one ...
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392 views

The driver detected a controller error on \Device\Harddisk0\DR0 on a virtual machine

The event in question is generated by a virtual machine. The disk 0 is a scsi connected drive to the virtual machine. The vhdx file is in the hyper-v cluster which has the storage from SAN cluster. ...
3
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2answers
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Mount NTFS Partition on two Servers - Just one will have RW access

I want to configure my san to present a disk to two windows servers, i would present it one time as RO and to the other Server as RW Will the windows servers have a problem with this setup?
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IBM 2005-16B switch console cable

I have an IBM 2005-16B switch, and it has a male serial connector on it, and I want to use that to configure the device. I also have a usb to male serial cable, and I have recently created a null-...
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1answer
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Two Windows servers in SAN

I have two Windows 2016 servers with QLogic HBA. Servers connect to a Brocade SAN switch. Servers can ping fabric via QLogic FC ping utility. But one server don't see the other. In "Target list" in "...
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3answers
852 views

Boot Windows from SAN

Am not so familiar with Storage. I have some questions around running Physical and Virtual Machines with SAN for Storage. Is it possible to boot OS from a SAN Storage attached to a Physical Server? ...
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1answer
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Can a HP P2000 G3 SAN with SAS controller direct connect to a Dell PowerEdge Server with a Dell brand HBA [closed]

I am building a home rig and have recently acquired an HP P2000 G3 SAN with SAS controllers. I appreciate these are supposed to connect into a DL380 G7 or G8 with the HP branded SAS interface card (...
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1answer
77 views

Install FREENAS on ORACLE SUN SPARC T5240

is possible to install FreeNas server on Sun Sparc Enterprise T5240 (Hardware compatibility),and how to do that? Thanks
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how to discover the added group without rebooting in fc san?

Envs: Client A: Windows、 qlogic-qle2460、 SANsurfer FC HBA Manager Server B: Linux、qla2x00t、scstadmin A and B are connected to the same fabric switch. When I create a group for host A on host B, ...
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3answers
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iSCSI, multiple initiators for the same LUN

I have a web application that is distributed over 3 servers. These 3 servers need a shared storage to access files. Since iSCSI is just a protocol, not a filesystem, it will not have any ...
4
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1answer
777 views

PAGE_FAULT_IN_NONPAGED_AREA when booting Windows 10 from iSCSI network drive

I am trying to set up Windows 10 for diskless boot via iSCSI, as described, for example, here or here. I am able to run the Windows 10 installer to install Windows on the target iSCSI drive. However, ...
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1answer
90 views

dell md series device specific module for multi-path failed to return a path?

We have a Dell PowerVault 3620f (fiber) and I am getting the following errors in the Windows event log. I am no good with fiber zoning so I would need to pull in someone to take a look but figured I ...
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2answers
70 views

ISCSI and SAN scaling

The Problem: I have a photography studio, and I ran into a problem when I just ran out of space on a monthly basis. Every month I just purchased additional HDD for a file server. now I have approx 120 ...
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1answer
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Veeam Hyper-V Cluster Off-Host Backup Proxy

I'm creating a new HPE configuration for a Hyper-V cluster. Need also to consider Veeam and Off-Host Backup Proxy. This might be a silly question, but considering HPE MSA 2052, does it make any ...
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1answer
142 views

Best practice to present storage to KVM guest VM for storage server for iScsi target

Hi I'm building out a storage sever that will consist of a KVM Fedora-Server host with a Fedora Server guest VM. I have a 20tb SSD Raid 6 array that I want to act as my storage target ultimately this ...
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Seeking iSCSI file copy flow clarification

I'm trying to diagnose a slow file copy issue but am a bit perplexed by the "behind the scenes" flow of data and am looking for clarification. The server in question is a Windows 2012 server and it ...
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2answers
75 views

Fastest solution to use FTP/Aspera/MediaShuttle with SAN network

At my postpro studio we have a SAN Network (Stornext 6). There is also a MediaShuttle and FTP server in a VM on the firewall (I know, I know... Not my fault, really xD). The VM is sharing SAN over ...
3
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1answer
380 views

MPIO on Win Server 2k16 w/ EMC Unity

I have two Dell R630's running Windows Server 2016, slated to be Hyper-V hosts but not yet clustered, attached to an EMC Unity array via fibre channel through a pair of Brocade 300 SAN switches. The ...
3
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3answers
146 views

Understanding Disk Array Availability

I'm new to this thus I'm trying to understand about calculating Disk Array Availability (DAA). What I have understood so far is that availability is always 1, and Failure = 1÷MTBF, and that is all I ...
0
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1answer
283 views

CEPH for video streaming? [closed]

So i have a video streaming app (HLS) and was wondering if using CEPH or GlusterFS would be a good idea vs using plain SAN storage? (from performance prospective) In general is software defined the ...
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Mount the Vplex Virtual Volume ( LUN ) Xen Server

Hello ServerFault members, Please help me with this issue. I am in very strange situation with my Xenserver environment. I am trying to mount the Dell EmC ( Vplex LUN ) to the Xen server HA and when ...
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0answers
25 views

Windows Server guest changes and ramifications after being migrated to SSD?

This particular environment, it's VMWare guests that have been moved to all-flash SAN, but that shouldn't be particularly relevant. I'm quite familiar with >winsat formal from SO questions like ...
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0answers
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Dell EqualLogic PS6010E Network Setup

We recently got a PS6010E and going through setup, I put in all the IP info we are planning on using, and when I get to the part where it says to go to http://[group-ip-addr], I am unable to connect. ...
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1answer
39 views

3par OS location

As a complete 3par Newbie I have a simple question about the OS of the Storage-System. Is the OS on a 3par stored on it's controllers or on Disks like in some EMC-Models. When I have an empty 3par-...
2
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1answer
115 views

Figuring out how storage is configured to Hyper-V cluster

I am presented with a Windows Server 2016 Hyper-V cluster (2 nodes) and the nodes are connected to an HP MSA 2040 storage (SAN?) with direct fiber connection. I am trying to figure out how the ...
2
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1answer
45 views

What is difference between path and connection in iSCSI volume?

we have connected few Iscsi volumes. When we execute Get-IscsiConnection it shows connection between target IP address and initiator IP address. But when we execute mpclaim.exe -s -d It ...
4
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3answers
214 views

Ubuntu Linux - Shared VHDX

I have two Ubuntu web servers using a shared Hyper-v vhdx file in a Hyper-V cluster as a data drive because the Nimble SAN does not support NFS Connections. However, while both servers are able to ...
4
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1answer
90 views

How to do Iscsi deep discovery?

In our storage array we change the discovery IP. Once the discovery IP is changed, the Multipath connection has to be rebalanced (It should make connection again with new discovery ip). But it is not ...
3
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1answer
186 views

How to find which MPIO path is being used for IO?

We were experimenting MPIO with our Storage array. We saw the Get-Iscsisession and Get-Iscsiconnection cmdlet to find the paths created. But during IO ,i would like to know which path has been used. ...
3
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1answer
316 views

How to check Unmap event in windows server 2012 R2?

We have created few volumes in storage array. Via Iscsi initiator those volume have been added into host machine which is Windows 2012 R2. For few volumes when we delete the contents ,the volume size ...
2
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3answers
558 views

Which RAID level for virtual machines in SAN

I have Dell EqualLogic PS5000E iSCSI Array. I have connected this SAN in servers directly. I used Jumbo Frames. In this case, everything is ok. My storage is ~25TB. Now, I need to choose, which RAID ...
8
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1answer
3k views

Using non-certified hard drives in Dell MD3220 storage array

Is it possible to use non-certified hard drives in a Dell MD3220 storage array? I ended up getting 3 new drives that were the EXACT same model number as the existing ones. Then I bought the drive ...
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0answers
498 views

fsck.ext4 complaining that the device is in use. Can't find what exactly is using it

Our setup is a 3-node RHEL 7.3 bare-metal Kubernetes cluster running on Docker. We have a multipath FC SAN block device discovered on all three nodes. This device is used as a Kubernetes Persistent ...
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1answer
398 views

How to find if FC-Switch using port-zoning or not Brocade FC 300

I have to replace a HBA on RedHat5.3 due to card failure. A tech guy asked me that "Check your FC-Switch Zoning Type of Port Zoning or not? , because if host accessed by WWNN, you'll need to update ...
0
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1answer
173 views

Dual SAN controller failure [closed]

I am new to storage but facing a serious disaster issue of the failure of Dual SAN Controller. Don't know whether this is a right place to ask this question. Anyways the problem is, None of the ...
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1answer
41 views

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
3
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1answer
112 views

Does data reduction work cross datastore?

I am the proud owner of a Unity 400F all flash SAN connected through FC. I have multiple datastores setup for my vm infrastructure and I was wondering if data reduction (what EMC calls their combined ...
1
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1answer
105 views

Unused switch ports in Fabric (brocade)

I am very new to storage but we are having trouble with performance on our SAN. While troubleshooting I found that one of our switches in the fabric (1 HP C7000 with 2 flexbric interfaces connected to ...

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