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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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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-...
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1answer
34 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 ...
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0answers
27 views

SAN VD RAID 6 on Linux

Problem: SAN VD's are only seen as disks that can be mounted on the FS Question: How can I make VD's seen as raid configurations by linux / centos 7?
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1answer
29 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 ...
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0answers
33 views

Windows Server 2016 UEFI Boot issue

I am trying to get a fresh install of Windows Server 2016 working on UCS B-Series blade with UEFI and boot from SAN and seem to be hitting a brick wall. The OS installs and I can see the Windows Boot ...
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2answers
65 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 ...
3
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1answer
44 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 ...
2
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1answer
31 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. ...
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0answers
26 views

Spinning up disks in FC shelf

I own an Engenio 4600 FC shelf, which works apart from flaws regarding missing diagnostics pages quite well as a JBOD in combination with Linux and ZFS. The only problem I need to solve is if I ...
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1answer
37 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
79 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
307 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
71 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
47 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 ...
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1answer
83 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
27 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
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1answer
39 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
34 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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0answers
81 views

Xen pool upgrade from 6.5 to 7.6

We are running a XenServer pool on an IBM BladeCenter S with 4 HS22 blades installed. 3 of the blades are in a pool and the fourth not. The blades have no internal storage and all get it from the ...
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1answer
51 views

Clean LUN on HP MSA P2000 G3

I am trying to deploy a self-host oVirt Engine on a SAN HP MSA P2000 G3 LUN. I created a Vdisk and a volume via the Storage Management Utility (SAN GUI). The volume is already containing data because ...
2
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5answers
257 views

SAN storage in Google Cloud

If I need to move a 100TB SAN (block) to GCP what are the options we have? As per my understanding it has to be a persistent disk. But current max limit per disk is 64TB. So I will need two disks. But ...
2
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0answers
10 views

moving 4g AIX server to 6520 brocade switch, i/o errors on host [closed]

Recently tried to move several HP Unix (AIX) servers from an old 5300 brocade switch fabric to new 6520 brocade fabric. The old zones were inactivated and old storage port id's were kept intact for ...
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2answers
314 views

Reclaim deleted space on SAN from thin provisioned LUN with zeros on Windows

Dear Data Storage Experts, We are using a SAN attached thin-provisioned LUN on Physical Windows machine from a storage vendor. Storage chargeback is based on high watermark (deleted space not ...
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1answer
147 views

Compatible hard drives for Powervault MD3000i

I recently acquired a Powervault MD3000i with several hard drives already installed, and was looking to see if it were possible to purchase additional hard drives without going directly though Dell. ...
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1answer
19 views

Setting up VM's with a SAN

I am currently in the Process of virtualizing my infrastructure setting up a SAN As well as a complete replica as a DR site. I have purchased the following Equipment (plus all other needed equipment) ...
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1answer
193 views

Why multipath devnode change after reboot?

As I command multipath -ll, the output show like this. ocr3 (149455400000000000000000001000000ca0200000d000000) dm-9 IET,VIRTUAL-DISK [size=980M][features=0][hwhandler=0] \_ round-robin 0 [prio=0][...
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0answers
214 views

FreeNAS iSCSI use - recommended percentage?

I have set up a FreeNAS system on a Dell R310 server with 4x4TB drives on a cross-flashed H200 controller in FreeNAS' own RAID10. I want to use that storage entirely for VM containers that run on ...
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1answer
3k views

SAN: FC vs SAS vs iSCSI

I am currently preparing for an exam. I thought FC (Fibre Channel) was the transport protocol for SCSI and SAN. But now I read, that you have to decide if you want to use FC (SCSI), SAS or iSCSI in an ...
1
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1answer
522 views

Configuring a DELL storage array with both controllers set to the same address

I've gotten hold of a used Dell PowerVault MD1000 with two MD3000i (aka AMP01) controllers, both of which are configured to the same address. However my attempts to configure them - or indeed perform ...
0
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1answer
616 views

Docker Swarm iSCSI

I'm currently trying to setup a HA infrastructure capable of hosting a Symfony APP. This project is for school purposes. The requirements are the following : We have to use a SAN based model to ...
3
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2answers
1k views

How to configure StarWind Virtual SAN Free

I tested my environment during the 30 day trial and really liked it but now I want to make it work with the free version. I started over and followed these walk-through from Starwind Creating HA ...
1
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1answer
34 views

Recovering partly overwritten LVM

We had multiple servers connected to a SAN (via Fiber Channel) to run Proxmox (a KVM solution). One of the servers needed to be reinstalled so we let it perform an automated install (via kickstart). ...
4
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1answer
255 views

Mapping SAN to cluster nodes

I have mapped a block of space from SAN to 3 cluster nodes (2012r2)as below: 2 ports from each node have been mapped to the same share on SAN for redundancy. MPIO has been configured on all nodes SAN ...
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0answers
78 views

Will replacing disks one at a time end up increasing the total available storage on a Dell Compellent SAN?

Short Version Can I hot-swap disks in a Dell Compellent StorageCenter SAN with larger ones (one at a time, allowing them to rebuild between each change) and end up with more total available storage? ...
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1answer
61 views

How to monitor EMC VNXe3200? [closed]

Currently, I'm using Solarwind to monitor my system, but VNXe can not. Any solution to monitor this? I just get a notification via email or SMS when my disk or array is failed. Thanks.
0
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1answer
383 views

How to connect MD3800i (iSCSI 10 GbE) to PowerConnect 8132F (SFP+ 10 GbE)

I want to connect a SAN (MD3800i) to a PowerConnect 8132F switch. Both support 10 Gbit Ethernet, but the 1st does it via iSCSI (RJ-45), while the second - via SFP+. Any adapter that could go in ...
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1answer
51 views

iscsi add a new storage machine to the san network and configure as one large disk

I have looked around so much but still couldn't find a practical working answer/example about adding a new storage machine to the iscsi san network and instead increase storage capacity. What I have ...
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1answer
54 views

Enterprise LAN based on Ubiquity

I work for a small company with ~180 users. We are planning a complete overhaul of our infrastrucure. My question is whether Ubiquity equipment is suitable for our task (which is explained below), or ...
0
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1answer
50 views

Network Storage for Mac's in a Windows Environment

We have a Graphic Design team running iMacs in pretty standard Windows network environment (Windows Server/Domain). They use up a heap of disk space and we need to hang onto the artwork files forever....
3
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0answers
316 views

Command to show storage usage on HP MSA 2040 SAN?

Is there any way to show me the usage on HP MSA2040 SAN storage? I am searching this for while, but no luck at all. I need to know the usage of the entire SAN storage by just running command from cli ...
0
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1answer
63 views

Cisco UCS compatibility with FC-AL storage array

We have a Xiotech RS-1602-FC-SBD storrage array that I am testing to see if it is of any use. We have a Cisco UCS Chassis with blade servers and a Fabric Interconnect 6120XP. The storage array ...
2
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0answers
68 views

hp p2000 iscsi Hyper-V

I currently have an HP P2000 SAN with 2 MSA with 4 iSCSI ports each. Only 2 iSCSI ports per MSA were utilized. One going to each of our SAN Switches and furthermore to our hosts. Throughput has been ...
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1answer
2k views

How to make disk available through ISCSI target on Ubuntu 16.04

I am trying to have some disk available to a Windows Core Server through a ISCSI on Ubuntu 16.04. I tried NFS but it is not available for Core edition and samba is not what I need. The thing is, I ...
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1answer
74 views

Dell PS6510 96tb raw turns into raid 6 with 26tb useable?

I am confused by the usable capacity i am getting from a PS6510 with 48 x 2TB Disks. So total this Array has 96TB RAW but after the initial configuration I manage to connect to the array and apply a ...
2
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0answers
58 views

Any suggestions on recovering from a 100% utilized vSAN?

I am seeking suggestions and comments on how to recover from a 100% full vSAN (without the obvious, reset to factory option). I have an 8 node ESXi cluster which runs entirely on a vSAN backing. Due ...
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2answers
408 views

Can I Add HBA Card to A Workstation Or It Need to be Server?

I have "HP Z440 Workstation" and I want to connect SAN Storage to it. My Search Lead me To HBA cards as the answer, But I cant Confirm if its going to work or not. and what is the OS requirements, ...
3
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1answer
148 views

Windows 2012 R2 Hyper-V SAN Configuration

Struggling with what I thought would be a pretty easy setup and can't really see where I am going wrong. I have 2 Dell Hyper-V hosts running Server 2012 R2 connected to a Dell MD3800 SAN via 2 Netgear ...
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1answer
2k views

How to find out the HP P2000 SAN storage usage

I have a HP P2000 SAN using for multiple purposes. I need to see the entire SAN storage usage, like free space, used space, raw space... So far all I can get is the raw space and volume size from web ...
3
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2answers
195 views

Does changing vmware datastore multipathing policy disrupt connectivity

We have several VMware ESXi hosts accessing multiple datastore stored on a fiber channel SAN. We have found that some of the hosts are still set to "Most recently used" mode for their multipathing ...
6
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2answers
499 views

EMC ScaleIO vs Starwind Virtual SAN

I'm setting a test lab to evaluate best solution for future production use. The production farm intended for an SMB, so budget is present, but it is also limited. Goal for production: 3 ...