Questions tagged [storage-area-network]
A SAN is a Storage Area Network, for providing block-level access to storage subsystems across a network.
885
questions
3
votes
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 ...
0
votes
1answer
37 views
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 ...
3
votes
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 ...
8
votes
1answer
166 views
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. ...
5
votes
3answers
161 views
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 ...
14
votes
1answer
3k views
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 ...
0
votes
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 ...
0
votes
0answers
28 views
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 ...
0
votes
0answers
25 views
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
...
0
votes
1answer
53 views
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 ...
0
votes
1answer
41 views
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 ...
0
votes
1answer
36 views
How to Expand Server Storage to Dell PowerEdge With a SAN?
I have recently boughtĀ Dell Poweredge T410 server with a Perc 6/I RAID controller to get some hands on experienceĀ with server hardware and play around with Windows Server OSs.
I've been looking at ...
0
votes
0answers
24 views
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 ...
2
votes
0answers
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
votes
2answers
78 views
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?
1
vote
0answers
72 views
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-...
1
vote
1answer
45 views
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 "...
5
votes
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? ...
0
votes
1answer
144 views
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 (...
-1
votes
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
0
votes
0answers
8 views
how to discover the added group without rebooting in fc san?
Envs:
Client A: Windowsć qlogic-qle2460ć SANsurfer FC HBA Manager
Server B: Linuxćqla2x00tćscstadmin
A and B are connected to the same fabric switch.
When I create a group for host A on host B, ...
7
votes
3answers
1k views
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
votes
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, ...
1
vote
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 ...
-1
votes
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 ...
0
votes
1answer
55 views
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 ...
0
votes
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 ...
0
votes
0answers
32 views
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 ...
0
votes
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
votes
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
votes
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 = 1Ć·MTBF, and that is all I ...
0
votes
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 ...
1
vote
0answers
33 views
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 ...
1
vote
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 ...
1
vote
0answers
23 views
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. ...
1
vote
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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
votes
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 ...
1
vote
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 ...
1
vote
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
votes
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 ...
-2
votes
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
votes
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
vote
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 ...
