SAN Multi-pathing recommended?

Similar Questions

• Change of MSCS RDM disk offline after VMware Server or patching firmware finishing or multi path IOPS / s - SQL MSCS RDM disk

  Hello

  Yesterday, we installed a fifth ESXi host at our development center and along that we also had a window of maintenance for other hosts.

  We made:

  • HP Proliant HP Service Pack upgrade to 2014.06.0_784915_001. We have HP BL460c Gen8 servers. The old PSP performed from September 2013
  • Installed patches for ESXi 5.1 U1, the latest 10-15 patches since February. Do not install 5.1 U2.
  • Upgrade VMware Tools on virtual machines.
  • Changed multi path IOPS / s for HP 3PAR from 100 to 1. (esxcli storage nmp ATAS add s "VMW_SATP_ALUA' Pei"VMW_PSP_RR"- IOPS O / s = 1 - c"tpgs_on"v '3PARdata' - M 'VV' EI 'HP 3PAR Custom iSCSI/FC/FCoE ALUA rule')

  After this interview little MSCS SQL cluster stopped working. It does not start because it cannot access the drive. I can see the drive in disk management, but they are all in an offline mode. Can't do anything about them, except a single disc. This one is online!

  Did anyone here have no idea what on Earth is wrong? If I does not tomorrow I have to list a species of Microsoft or VMware. I have not tried to remove/add the RDM-disc.

  Windows 2008 x 64 Enterprise

  SQL 2008 R2

  ESXi 5.1 U1 (latest patches)

  Thank you!

  Finally solved with assistance from HP support.

  Solved this KB KB VMware: change a LUN to use a policy different selection of the path (PSP)

  The "funny", it is that the cluster has been around for 4-5 years and works on EVA SAN and now 3PAR with RR as a policy path, and all of a sudden it stopped working. Perhaps a host profile political trigged in, I don't know. And I could also see and access 5/6 disks, why not 6? And was on the way from RR.

  I asked HP about this.

  Thank you for all your help.

• New Guy Question - Disable Multi-Pathing on the VCB Proxy Server

  Hello everyone

  I had to install a Solution of the VCB Proxy. Among the issues is "Disabling Multi-Pathing on the VCB Proxy Server.

  Why would it be necessary to disable the multiple paths on th e VCB Server? What would be the steps to disable the multiple paths.

  Thank you all for any input on this issue.

  Here you go:

  http://www.Petri.co.il/how-to-deal-with-VMware-ESX-Server-VCB-multipath-issues-consolidated-backup-Windows.htm

  [i] Jerry [/ i] of the Jason

  [boche.net - VMware virtualization evangelist |] [ http://www.boche.net/blog/] [/i]

  [VMware communities user Moderator |] [ http://www.vmware.com/communities/content/community_terms/] [/i]

  [Area of Minneapolis VMware User Group Leader |] [ http://communities.vmware.com/community/vmug/us-central/minneapolis] [/i]

• SAN storage configuration recommendations

  We have a HP SAN with two fiber switches and a Bay of storage MSA2012FC with 12 146 GB drives.  I am trying to decide how to configure storage for our VI3 environment and seeks recommendations.

  At this point, I am considering two-Bay RAID 10 (6-146GB disks each) with 1 (220 GB) or 2 (440 GB) LUNS defined by the RAID array.  The virtual machines are configured in an HA configuration so I think it would be better to have two tables separated raid against one.  This way I can separate the pairs HA between the RAID arrays.  If I create a single RAID 10 array, then if more then one disk fails in this table we could lose everything.  In the future, we will add another MSA2000 pregnant then we will have another 12 146 GB drives.  At this point, we can expand each Bay RAID 10 to 12 146 GB drives to give us more storage space and performance.

  This sounds like a good plan?  Any advice would be appreciated.

  Hello

  RAID 5 is recommended because the table can stay together if 1 disk breaks down. With spare disks, this is a good configuration. RAID 10, a disk fails and you are switched. If this also works...

  I like Raid 5 and I have set up my disk space based on execution of 10-12 VMs per LUN. Who is the the average number per LUN. It's all about redundancy.

  Best regards

  Edward L. Haletky

  VMware communities user moderator

  ====

  Author of the book "VMWare ESX Server in the enterprise: planning and securing virtualization servers, Copyright 2008 Pearson Education.»

  Blue gears and SearchVMware Pro Articles: http://www.astroarch.com/wiki/index.php/Blog_Roll

  Security Virtualization top of page links: http://www.astroarch.com/wiki/index.php/Top_Virtualization_Security_Links

• How to get rid of confirmation on the actions with scripts dialog (multi path delete)?

  "I am using a script in actions to clear all roads, since the web found the 'activeDocument.pathItems.removeAll (); " and it works fine when it is called in the menu script not these dialogs at all but when I try to use it in shares, it still appears a dialog box asking for confirmation if I really want to remove" path regardless.

  Any help on how to perform this action without dialog would be much appreciated.

  Ty in advance.

  Try

  app.displayDialogs = DisplayModes.ERROR;

  or

  app.displayDialogs = DisplayModes.NO;

  In both cases, you probably want to reset to its original state when you are finished.

• iSCSI/NIC bonding/Multi Pathing

  My entire ESX environment consists of all Dell PE2950s, each with 2 x 1 GB NIC in them.

  both my iSCSI servers have 2 x 1 GB ethernet which are NIC glued to maximize throughput.

  For most areas of development, so these are his especially iSCSI and vm vm traffic traffic (like IIS, SQL, etc.)

  What is the best way to config the vNetwork in ESX so that I can use two NICs for ISCSI, but not to lose the LAN feature?  Can I spend 1 iSCSI NETWORK card and the other card NETWORK ISCSI/LAN?

  I posted about this before and I was told that the collage of NIC is not supported for iSCSI in ESX.  I don't know anything about multiple paths...

  Take a look at these:

  http://goingvirtual.WordPress.com/2009/07/17/vSphere-4-0-with-software-iSCSI-and-2-paths/

  http://blogs.VMware.com/KBTV/2011/01/how-to-configure-iSCSI-port-binding-on-vSphere-4.html

• iSCSI SAN, ESX4 Datastore recommended sizing

  Hi all.  I am in the final stages of our construction of vSphere and I'm looking for best practices in terms of sizing of the warehouses of data/Lun on a SAN, iSCSI for several hosts of ESX4.

  What we have:

  Two HP c7000 blade enclosure with three BL460c in each enclosure.

  All servers will run ESX4 and use an iSCSI SAN (Software initiator).

  I'm not sure of the best way to configure these elements.  A large unit number logic holding a large store of data?  A few small LUN each holding a data store? A unit number logic/data store for each ESX host?  I don't want to use vMotion and who could help narrow down the answer.

  Any help that you experienced people from VMware can each give this noob is very much appreciated.

  -Dave

  Dave

  This is my golden rule.

  Virtual machines are mixed on data warehouses to optimize storage efficiency and the efficiency of the I/O - low mix I/O virtual machines with virtual machines I/O high on the same data store.

  VMs per VMFS datastore 12-16 maximum.

  16 VMDK files per VMFS datastore maximum.

  * A VMFS volume per LUN storage.

  * At least 15% to 20% of a VMFS data store should be left as open space to meet requirements such as the virtual machine swap files and snapshots.

  According to your needs - you will initially 30 virtual machines, you must look for set 2 data warehouses-, but the number of vmdk files or e/s for a virtual machine needs can change that.

• NetApp FAS & NFS multi-path

  Hello

  I read best practices for NetApp, the http://www.netapp.com/us/media/tr-3749.pdf - and the other supporting storage, I wonder if port-channels are worth the hassle to reach NFS MPIO, is it better to do? OR does it come down to several subnets export or port-channel with several export? 

  Because you want to use several connections upward on the ESXi hosts to storage NFS traffic, all in a single subnet, your only option is to use a SHIFT on the hosts and multiple exports on the storage array. Each export must match an IP (HOT), with a unique least significant bit (LSB).

  Follow pages 280 to 283, taken from the book of Networking for VMware administrators , specifically with the configuration below and pay special attention to the LSB.

  

• Get the multi path-

  I found this code. Is there a way I can get the results into an Excel instead of just the screen?

  Get-VMHost | %{$_.Name; $_ | Get-ScsiLun | Select CanonicalName, MultiPathPolicy}

  And even better, since I will connect to an instance of vCenter4, I really need information of two of our clusters.  Cluster names are ProductionCluster8 and ProductionCluster9

  Thank you!

  I fixed that in the script in my first post. Now he has to work and only to retrieve information about the two groups.

• Political multi-channel Fixed and enter preffered paths balance for a set of RDM Lun

  Hi all

  I was hoping that someone with some experience PowerCLI might help me with the following problem.

  Short version:

  I need to adapt this script http://vmjunkie.wordpress.com/2009/01/29/balancing-lun-paths-on-your-esx-hosts-with-powershell/ to accept the entry of a canonical name text file...

  Long version:

  We have a number of LUNS of RDM used by Microsoft the Failover Clusters, in accordance with the recommendation from the storage provider (Dell), we need to define all teas LUN to have a multi-path of FIXED policy and want to balance these on both paths.

  I can get the canonical name for each LUN RDM using this script;

  Get-VM-Location"Cluster Name" | Get-HardDisk -DiskType "RawPhysical","RawVirtual"| SelectParent,Name,DiskType,ScsiCanonicalName

  (Of http://www.definit.co.uk/2013/03/powercli-script-to-set-rdm-luns-to-perennially-reserved-fixes-slow-boot-of-esxi-5-1-with-mscs-rdms/#more-1526( )

  I then manually identify the LUNS that have to be changed since the text output.  So, basically, I have a text file containing the canonical each of the RDM LUN name I need to change to fixed.

  LUNS.txt

  NAA.6000d31000331e0000000000000000c0

  NAA.6000d31000331e0000000000000000c1

  NAA.6000d31000331e0000000000000000c2

  NAA.6000d31000331e0000000000000000c3

  NAA.6000d31000331e0000000000000000c4

  NAA.6000d31000331e0000000000000000c5

  I can't run this command to set the Fixed multichannel strategy because I need the PreferredPath variable.

  Get-vmhost 'host name ' | Get-scsilun 'naa.6000d31000331e0000000000000000c0 ' | game-scsilun - multipathpolicy 'Fixed '.

  
  

  "If the MultipathPolicy parameter is set to 'Fixed', you must specify the parameter of PreferredPath."

  I can then get the paths by using this command:

  Get-vmhost 'host name ' | Get-scsilun 'naa.6000d31000331e0000000000000000c0 ' | Get-scsilunpath

  Favorite SanID state name
  ----       -----                                    -----      ---------
  FC.2000... False Active 50:00:D3:10:00:33:1e:19
  FC.2000... False Active 50:00:D3:10:00:33:1e:1 has

  Basically, I need to adapt this script (from here http://vmjunkie.wordpress.com/2009/01/29/balancing-lun-paths-on-your-esx-hosts-with-powershell/) at the entrance to a text file of canonical names.

  # Cluster-wide LUN Path Load Balancing Script

  # Written by Justin Emerson, http://vmjunkie.wordpress.com

  # Idea originally from a PERL script I saw here:

  #    http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/

  # This script requires the VI Toolkit version 1.5

  # NOTE: This script assumes that every LUN has the same number of paths.

  #       If you have multiple storage arrays, and they have different numbers of paths,

  #       I make no guarentees that this will work!

  # If you have an improvement to this script, please feel free to leave a comment on my blog!

  Write-Host"This script will modify the policy of all your shared LUNs on all ESX Servers"-ForegroundColorCyan

  Write-Host"in a Cluster to Fixed and select a preferred path in a round-robin fashion."-ForegroundColorCyan

  if ($args.Length -eq0) {$clusterName= Read-Host"Please enter the Cluster name"} else {$clusterName= $args[0]}

  $VMHosts= Get-Cluster$clusterName| Get-VMHost

  # Run through this loop for each host in the cluster

  foreach($VMHostin $VMHosts)

  {

      # Keep only disks of luntype "disk" to avoid any storageArrayController devices.

      # Filter to only objects where the ConsoleDeviceName starts with vml to avoid any DAS disks.

      # Note: I have tested both HP EVA and Xiotech storage and SAN LUNs always appear this way.

      # Please check if this is the same on your storage before running.

      $luns= $VMHost|get-scsilun-luntypedisk|

      where-object{$_.ConsoleDeviceName -like"/vmfs/devices/disks/vml*"}|Sort-ObjectCanonicalName

      $firstLUNPaths= Get-ScsiLunPath$luns[0]

      $numPaths= $firstLUNPaths.Length

      $count= 0

      foreach($lunin $luns)

      {

          if ($count-ge$numPaths) { $count= 0 }

          $paths= Get-ScsiLunPath-ScsiLun$lun

          $lun|Set-ScsiLun-MultipathPolicyFixed -PreferredPath$paths[$count]

          $count+= 1

          # Sleep for 30 seconds as I've heard some arrays dont like doing this too fast.

          Start-Sleep-Seconds30

      }

  }

  Any help would be greatly appreciated.

  See you soon,.

  Patrick

  Do you have something like this in mind?

  $esxName = "MyEsx" $lunFile = "./luns.txt"
  $lunNames = Get-Content $lunFile $VMHost = Get-VMHost -Name $esxName
  # Find the LUN with the least number of paths
  $leastLUNPaths = Get-ScsiLun -VmHost $VMHost -LunType disk | Sort-Object -Descending -Property {
    Get-ScsiLunPath -ScsiLun $_ | Measure-Object | Select -ExpandProperty Count} | Select -First 1 | Get-ScsiLunPath
  $numPaths = $leastLUNPaths.Length
  $count = 0 foreach ($lunName in $lunNames)
  {
    $lun = Get-ScsiLun $lunName -VmHost $VMHost  if ($count -ge $numPaths) { $count = 0 }
    $paths = Get-ScsiLunPath -ScsiLun $lun  $lun|Set-ScsiLun -MultipathPolicy Fixed -PreferredPath $paths[$count]
    $count += 1  # Sleep for 30 seconds as I've heard some arrays dont like doing this too fast.
    Start-Sleep -Seconds 30}
  

• Paths multiple parameters for RDM attached to ESXi 5 guests

  We are implementing a new SAN, an EMC VNX and have been advised by soing installation provider to set multiple paths for all devices to roundrobin.  Also advised it us to change the OPS are / s by default of 1000 to 1.  So I wrote a PowerCLI script to do this and everything works great.  I run the script every day to ensure that all new devices are replaced with the recommended settings.

  Yesterday when I ran the script, our attached SQL of VM with RDM server has started having huge disk latency issues.  As soon as we have changed the OPS are / default 1000 s, disk latency issues went away.  We could not find EMC information saying that RDM devices should have their IOPS / s set at 1000 or what their Multipathing parameters should (currently runnin on turnstile without no significant problem), but we found information from other storage vendors saying that we should go with the settings best practices of Microsoft at least the multi-pathing is set to MRU.

  Anyone out there has any information or advice on what we should do.  We will of course ensure that the OPS are / s for the RDM are set to 1000, but what are the recommendations for multiple paths of the RDM.

  See you soon

  Ant

  As a general rule, Multipathing for RDM must be the same as that of storage of data VMFS, with the exception of MSCS RDMs, which are required to be set multiple access paths, by VMware

  I'm going to guess in your case that you had a few LUNS of the questions that you should study the trespass (or get Powerpath/VE for your env and never worry about it again).

• How to identify the lun has a fixed path, SRM or rr on esx4 policy?

  After reclassification of esx 3.5 to esx 4.0 and Netapp Storage ALUA political path should change from fixed to Round Robin.

  VMware KB article:

  http://KB.VMware.com/selfservice/microsites/search.do?cmd=displayKC & docType = kc & externalId = 1010713 & sliceId = 1 & docTypeID = DT_KB_1_1 & dialogID = 24058009 & StateID = 1 0 24056058

  http://www.VMware.co.nz/resources/compatibility/detail.php?device_cat=San & DEVICE_ID = 3977

  Release	Mode	Recommended Political path	Firmware	Device (s)	Configuration
  ESX 4.0	VMW_SATP_ALUA	VMW_PSP_MRU	Data ONTAP 7.3	N/A	Switched FC

  For alua esx4i can be configured on vsphere cli

  Command for esx and Esxi 4 4 by vsphere cli

  esxcli - Server esxhost ATAS setdefaultpsp psp - VMW_PSP_RR - ATAS VMW_SATP_ALUA nmp

  Command for esx (service console)

  esxcli - Server esxhost ATAS setdefaultpsp psp - VMW_PSP_RR - ATAS VMW_SATP_ALUA nmp

  After setting this LUN ALUA config only new created have the parameter ALUA and alternating by default.

  For the existing LUN political path was with esx 3.5, the fixed value. After upgrading to esx 4.0, they will be set to fixed.

  What is the command to find out what old LUNS are set on a fixed policy and the new LUN is set to Round Robin.

  This vmware blog, there is an example to all. Y at - it a get to find fixed command, rr or mru?

  http://blogs.VMware.com/vipowershell/2008/07/managing-Storag.html

  After a few PMs that I must conclude that the script, which emulates the esxcfg-mpath command, does not support the NAA address that is used by NetApp.

  As a quick fix, you can use the other script I gave above that uses cmdlets Get-ScsiLun and Get-ScsiLunPath .

  Who should at least show you what multi-path strategy is used.

• Multi-NIC vMotion with ESXi/vCenter 4.1

  We take running ESXi and vCenter 4.1 and after the secure Channel secure Channel 5.5 class and sitting for my exam in a few weeks, I have actively tried to improve our environment. Previously, to the study and trying to learn more about VMware, we were in pretty bad condition. Relevant material (AMD, Intel CPU, generations of Intel CPU, amount of RAM and CPU), versions hyperviosr Mismatched ESXi and ESX and no redundancy, vmotion and TONS of snapshots as backups.

  In the two weeks since my course, I have eliminated all snapshots (performance daily vCheck to check on the health of the venvironment), emigrated to 5 similar hosts (and memory/cpu configurations) that we had to drag do not, connected to all ports card NETWORK 6 to 2 x 3560g cisco switches and connected the second switch updated ESX to ESXi 4.1 and patched all hosts with Update Manager (nobody used), created the host profiles and compliance on the cluster and hosts, activated DRS and HA, set up a couple of VAPP for STM systems... the list is long

  I still have a lot to learn, but now I'm a bit confused about one thing...

  We use Fibre Channel SAN, one side get our second Fibre Channel switch hooked up for redundancy and I guess that Multi - pathing (?) I have a couple questions question...

  1. set up the second fiber switch would give me several warehouses of data, correct paths?

  2 can I create and separate vMotion in our configuration, using the CF WITHOUT? Any flow of traffic (for vmotion) through the vswitches or he remains behind the FC switch?

  -I know with iSCSI, you want to create a vSwitche separated and installation multi-nic vmotion

  3. in the configuration of the redundant management interfaces do I need to create two vSwitches with vmkernel with separate IP addresses management ports or just create on vSwitch with a vmkernel port and two network cards is assigned to the (two different connected to 2 physical switches physical cards)?

  -We will most likely use VST if we can get the trunk ports to pass traffic defaullt VLAN, so I think it is still acceptable to create separate vSwitches for management, vMotion (if necessary because of the CF) and port VM group? The designs I see online usually use only a vSwitch for VST and multiple is.

  That's all I can think of for now... Just some things that need to be clarified on... I guess I still need a vSwitch vMotion (allocate 2 of 6 network adapters in it) because some type of traffic would pass over him, but I think that most of the vMotion and all the SvMotion would remain behind the FC switch.

  Thanks for any help!

  With regard to the topic of discussion: Multi-NIC vMotion introduced with vSphere 5.x and is not available in earlier versions.

  1.) Multipathing is not related the number of FC switches, but only for the number of initiator and target. However, using several CF toggle availability increases due to redundancy.

  2.) you must differentiate here. vMotion is a live VM migration process to other hosts, i.e. only the workload of the migration. vMotion only uses the network. Storage vMotion on the other side generally used storage connections - i.e. the CF in your case - to migrate files/folders to the virtual machine.

  3.) redundancy for management traffic can be reached in several ways. The easiest is to simply assign multiple uplinks (vmnic) to vSwitch network management. So, a simple 'Netowrk management' will do, and redundancy is made based on recovery of the vSwitch.

  From a design point of view you can use multiple vSwitches for different traffic types, or combine them on a vSwitch by configuring the failover policies for groups (Active/Standby/Unused) port for example.

  André

• MAS of paths of y...

  Hola

  that type of "track selection" haceis vosotros usually, o mejor, cual recomendais?

  

  cutting en como este y me pasa algo raro (no target El appears) pero el caso are works, sabeis one what can deber?

  Gracias.

  VCP 410

  Hola Jose,

  Tal como muy well say los compañeros aside to have some sober knowledge Tecnología iscsi, in concreto in el tema Multipathing, recomendable conocer como lo understand y vmware asi como el manufacturer regardless of you cabina SAN (the caso you dell en)

  ASI than diria como aquel, vamos por partes

  Primero're muy recomendado the arrows a look has the vmware for the iscsi san configuration guide .

  Tampoco you olvides verificar if you launched soportada VMware poresta cabina. Not estarlo (tranquilo as lo esta) nadie you Zapatero than none you can carry una "sorpresa"... (me lo mid cuenten con una EMC AX150i Vsphere en...)

  Finalmente're también muy recomendable that indagues / averigues of her part of the manufacturer of the telephone box, that dan information/manuals/recommandations en the integration con vSphere. Ago that conociendo a poco las caracteristicas of you cabina (TR for example are activa / activa o activa / pasiva) you can reach get UN Mayor provecho a y integrarla mejor con vSphere.

  Te paso par UN documents as explican como programming you good cabina con vShpere:

  http://www.Dell.com/downloads/global/solutions/md3000i_esx_deploy_guide.PDF

  http://www.delltechcenter.com/page/VMware ESX4.0andPowerVault MD3000i

  In concreto're interesante el tutorial as explica como montar cabina using el path selection plugin (PSP) en modo round robbin.

  Ago por ultimo, you paso unos enlaces sober el tema del iscsi multipathing (consulta también el're para Vi3, no tiene desperdicio) Québec básicamente encuentro practice in este tema (enlaces sobretodo los back first):

  http://virtualgeek.typepad.com/virtual_geek/2009/01/a-multivendor-post-to-help-our-mutual-iSCSI-customers-using-VMware.html

  http://virtualgeek.typepad.com/virtual_geek/2009/09/a-multivendor-post-on-using-iSCSI-with-VMware-vSphere.html

  http://blogs.VMware.com/storage/2009/10/vStorage-multi-paths-options-in-vSphere.html

  (Creo tienes para a lectura entretenida largo rato)

  Respecto did you pregunta, el Método path selection depends on UN poco in cada caso mejor. Sobretodo viene determínado por las caracteristicas of the cabina y como is integrated quiera con vSphere. El mas 'conservador"por asi decirlo (y el is replaced by vmware Recomiendan if revisas the compatibility web guides VMware para you cabina) is the MRU. Este works well in 99.99999% of las situations. El fixed one administration del anterior, pero as segun como can give algun problemilla con segun than cabina (por esas cosillas del way screw up). A level of performance theory as must the mejor opcion sea configurar el path/caminos como round robbinlos load balancing .

  Por cierto. If revisas el tutorial mas arriba del delltechcenter you can see what the "particularidad" a veces no salga cadena of text from los target también pasa al autor. Parece ser than any hay as preocuparse por ese tema

  Bueno espero acercado reason en algo, Jose

  Best wishes / Saludos.
  Pablo

  Please consider awarding

  all useful or correct answer. Thank you!! -

  Por favor considered premiar

  any respuesta correcta o util. ¡¡MUCHAS gracias!

  Virtually noob blog

• iSCSI and Fibre Channel on the Dell PowerVault MD3000 SAN shaerd with 2 physical servers

  Hi all

  I'm doing new virtualization technologies work in my office for assistance:

  2 x Dell PowerEDGE 2950 III each installed with iSCSI next accessing the SAN controller

  1 x Dell PowerVault MD3000 (10 x 300 GB 15 k rpm SAS)

  The

  VMWare ESXi is installed in an internal USB to load 4 x virtual machines which is

  under SOLARIS (using project, houses, SAMBA file server and)

  Source code repository and compile the source code of the project Build

  Server too.)

  5 x Windows Server 2003 which perform as Apache Tomcat application server.

  And

  I wonder if it has performance benefits in the application of the

  Shared SAN for these two physical server via iSCSI in contrast with

  Fiber Channel.

  I am aware that CF is faster and more expensive, but in this case, I won t run a VM with DB server on it.

  must

  I enter the path to have iSCSI or stick with the given FC

  the SAN runs on 15 k rpm SAS used by 2 ESXi server.

  Please let us know of a reflection regarding this configuration.

  Thank you

  Usually, you take NIC 1 gb connections available on your host and configure them as such.

  2 network cards go to the San, most of the time that it is actually two networks with different subnets.

  1 network card next LAN

  1 network card for the management

  We only use three network cards currently on our guests, 2 for San and the other for management and lan. We use two switches dedicated to dedicated networks dual iSCSI san. This allows to easily add additional hosts in the future.

  You get to decide a bit, but the double san network is pretty much a given. You can do all this of course with the VLANs as well. We use the switches unmanaged yet in our Organization.

  PS: Passing path recommended is to have completely isolated storage of the LAN network / network of the user.