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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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Poor Cluster Shared Volume performance when node is not CSV owner

We have a 5 node Windows Server 2016 Failover Cluster setup using an HPE Nimble as shared storage. We're using the cluster for Hyper-V. All virtual machine VHDXs are stored on the cluster shared ...
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3 votes
2 answers
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ZFS and SAN: issue with data scrubbing

Working as scientists in a corporate environment, we are provided with storage resources from a SAN within an Ubuntu 20.04 virtual machine (Proxmox). The SAN controller is passed directly to the VM (...
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Dell Equallogic PS 6210 is not Booting up After Power Outage

Our EqualLogic PS 6210 is not booting up properly after the power outage, unfortunately it is not under warranty We can power it on, the disks are blinking and both controller is powered on (but ...
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High Load Average in Solaris Operating System - Due to high read I/O

In Linux OS, the load average is dependent on multiple factors like CPU utilization, number of uninterruptible sleep processes, and others. On the other hand, Solaris OS load average is dependent on ...
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Factually Btrfs is it suitable for block storage usage?

It exists various storage device, file, block and object based. Some filesystem are dedicated to a kind of device. what about Btrfs ? Here I would like to get some technical facts about Btrfs over a ...
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Single SAN with ocfs2 and gfs2

I have a single SAN with two virtual drives. (i.e., they are separate mounts, but they are mapped to the same IP address) For example, if I do ls /dev/disk/by-path/, I see this: ip-172.16.100.5:3260-...
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Brocade version compatibility

I want to add a SAN switch to the existing fabric, the new SAN switch is running on Brocade v9.x the switches in the fabric are running on Brocade v7.x, is it feasible to connect them or should I ...
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1 answer
144 views

iSCSI separation from Ethernet via VLAN

I've set up a small cluster of a few servers along with a SAN. The servers are running Ubuntu 20.04 LTS. Using instructions provided by the vendor (I can't find where I read it before), they ...
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1 answer
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JBOD hard drives report incorrect size

I am trying to setup a netapp ds14 to use with 6 and 8tb SATA drives I got FC to SATA interposer boards and now all the drives are correctly identified and visible, however the capacity that I see is ...
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Offline virtual disk in AX150i

I have an old AX150i with two virtual disks. One of them works fine, but the other is offline. The storage device shows the following message: "The virtual disk currently can not be accessed by ...
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1 vote
1 answer
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How to make Linux discover new LUNs from Pure Storage FlashArray//X70 R3?

When a new LUNs are presented to Fibre Channel SAN from a Pure Storage FlashArray//X70 R3, Linux (SLES) does not find those (as opposed to other FC storage systems like the HP EVA or 3PAR StorServ). ...
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2 answers
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Query about Thin Provisioning and Thick Provisioning

If i have storage LUN created as thin provisioned and mapped it to VMware Datastore. From that Datastore thick eager VMDK allocated to VM. Does this action reserve VMDK capacity on Backend Storage and ...
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HPE StoreAll 8200 Gateway Storage - showing UptimeOverThreshold

When checking the health of the HPE StoreAll 8200 Gateway Storage, the output of running this command ibrix_health -l shows UptimeOverThreshold. Could you please let me know what does it means, should ...
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0 votes
1 answer
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What kind of operating system SAN device can have?

Ciao, I don't understand does SAN device have an operating system? I know it is connected to servers in data center by san switch and it provides data drives to the servers but how the server ...
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1 answer
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RAID 0 for Development

Hello fellow administrators, I am seeking high level guidance on the following situation: First the context of the environment: internal, all virtual (vmware), development use only, performance ...
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3 votes
2 answers
210 views

How does SAN provides block access to data?

I was reading about file storage and that lead me to SAN. I read about SAN and that it provides block access to data. I was looking for these concepts in some video, where the guy creates a VM on some ...
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1 vote
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Best Practice: Ansys FEA Output Data Storage

I'm trying to make this as least subjective as possible by providing finite inputs and parameters. I truly want to know what is the most resource affective, given the constraints. Given my available ...
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1 answer
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DS3400 - no access - only ping via management ethernet port

This is my first post, so sorry if I `ll miss something My task is to collect data from few years old DS3400+EXP3000 ( it was disconnected from power last 2 years). After starting it on front panels ...
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Can we mount single SAN block level storage are on two separate VMs having different OSs

We have one VM having HP-UX, on which a storage area is already mounted from SAN as block level vxfs. We need to share the same storage area on another VM in real-time read-only mode but we can only ...
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Best free software solution for homemade iSCSI SAN [closed]

I currently have a NAS running ZFS on Ubuntu but have recently changed my main windows software to pool local drives using Stablebit DrivePool. I cannot include networked drives in DrivePool unless ...
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2 votes
1 answer
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NFS: Single filesystem mount versus multiple mounts of sub directories

We have a file server (fsrv1) that has a 3 mounted XFS filesystems /srv/xfs{1,2,3} each with 3 top-level directories: /home, /scratch and /project. What is the preferred approach to mounting this on a ...
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SAN Connectivity Extension from one Building to Other with 350 Meters distance Recommendations

We have two Data centers, DataCenter-A has all the Backup storage, Datacenter-b has critical servers, We need to backup Datacenter-b Servers via FiberNetwork. We have Brocade 300 Switches on DC-a &...
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5 votes
3 answers
532 views

"Bad message" with a new SAN using multipath and iSCSI

I'm configuring a new SAN for a set of Ubuntu 18.04-based servers. Each of nodes can mount the ext4 formatted partition fine. Being new to both multipath and iSCSI, I'm not sure if what I'm seeing is ...
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1 answer
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Multi domain SSL shows all the domains publicly

We have generated Multi-domain SSL for my clients but when visiting any client site If we click on the lock icon and navigate to certificate details can see other client domain names in the subject ...
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6 votes
1 answer
2k 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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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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3 votes
2 answers
222 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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8 votes
1 answer
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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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5 votes
3 answers
3k 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 a ...
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14 votes
1 answer
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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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1 answer
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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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1 answer
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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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0 votes
1 answer
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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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1 vote
2 answers
336 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 ...
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0 votes
1 answer
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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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3 votes
0 answers
1k 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. ...
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3 votes
2 answers
127 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?
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1 vote
0 answers
331 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-...
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0 votes
2 answers
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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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5 votes
3 answers
1k 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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0 votes
1 answer
486 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 (...
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-1 votes
1 answer
138 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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10 votes
3 answers
7k 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 ...
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4 votes
2 answers
2k 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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1 vote
1 answer
154 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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-1 votes
2 answers
130 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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0 votes
1 answer
110 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 ...
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0 votes
1 answer
515 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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0 votes
0 answers
75 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 ...
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0 votes
2 answers
108 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 ...
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