ESX iSCSI Configuration recommendation

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• Guest VM, or additional hard drives ESX iSCSI initiator?

  We'll install Exchange 2010 on a Server 2008 R2 VM... is there disadvantages of adding several hard drives and for dealing with the ESX iSCSI traffic?  Or would it be better to use the initator iSCSI in the VM guest to connect to the San (EqualLogic PS4000)?

  If we continue the road of iSCSI initiator that I'll have to do some networking finageling since our iSCSI traffic is spread over a separate... switch then I'll probably have to add a VM network to the virtual switch and add a second NETWORK card to the guest VM... It would be simpler just to add more hard drives, but I don't know what is the (positive or negative) impact it would have on performance.

  Thank you.

  Hello

  the difference in performance between a vmdk and a RDM is something that can be ignored safely, there are many autour benchmarks that show how VMDK is basically fast a RDM disk, but you can avoid all the complexities of managing iscsi RDM inside virtual machines by going with vmdk.

  Basically, the only need IMHO to use a RDM is if you need to create a Microsoft Cluster inside VMware.

  Ciao,.

  Luca.

  --
  Luca Dell'Oca
  http://www.vuemuer.it
  @dellock6
  vExpert 2011

• ESX iSCSI & LACP

  I have a few questions I wanted to ask and try to learn before you start this project. Currently, we have two ESX servers, located on a single switch. Our virtual machines use different VLANS by customer.

  Here is going to be our new configuration I have planned:

  • (1) HP StorageWorks P2000 G3 iSCSI SAN
  • (2) cisco/Linksys SRW2024P switches (supported VLAN, LAG, LACP, frames Jumbo)
  • (3) HP Proliant DL360 G6 servers
  • Each server has 3 network cards
  • (2) routers of Sonicwall

  Exactly how do redunandcy off the iSCSI traffic? Using LACP on the switches I would connect the right set of themselves? So 1 Port SW1 goes to SW2 Port 1 and the same for Port 2.

  Then I would be on the side of ESX team two NICs together for iSCSI traffic. I would use IP Hash. I would like to connect NIC #1 to SW1 and NIC #2 in SW2. So, technically, I could unplug on NIC #1 and virtual machines must be able to run because of the several paths right?

  If I'm away, please let me know. I want to be able to lose a single switch, losing a NIC and continue to operate without a hiccup.

  Hello

  Attach a large document to help you implement the P2000 with vSphere.

  It is generally recommended to use multiple paths instead of collage/team.

• iSCSI switch recommendations

  I want to put in an Equallogic PS4000E.  Basically at the moment we are talking about a cost relatively low jump to the top of a 'silly' iSCSI array using SATA drives for a specific requirement for in bulk but low transaction storage.

  In a year or two is when our main SAN is replaced I would be interested to get a unit specified above Equallogic, use it as our primary box and moving our main on her production (we are almost entirely virtualized already) and setting the PS4000 at the other end of our site as a uni of replication/DR.

  For now, while it is clearly the best practice, I don't know if we really need of redundant switches, so what I'm looking for is recommendations on what might be an appropriate switch to buy now to purchase more from the same provider if normalize us on Equallogic.

  Dell PowerConnect are the obvious choice I guess.  We already have a couple of 5424 in a rack maintenance one "stupid" MD3000i to our Dr site, we are not pushing them, they seem to do the job, even if the web GUI sucks - I guess that they will be not enough should we end by using EqualLogic strongly?

  There seems to be a lot of vendors out there names I know, Dell, Cisco, HP, then are many sellers of "niche" - and I don't know what makes a good iSCSI switch.

  We're currently on ESX 3.5 U4 and I expect to move to vSphere when our main SAN and ESX boxes are replaced (basically right now, it is not broken, so I don't mean to fix).

  Yes, it's called the 'Dell_Equallogic_Configuration_Guide.pdf' which I'll try to join.  You want to watch 'Annex B' in there, you will see the exact steps that you want to make changes.  Just to make sure I could repeat the process if necessary, I took notes in construction, which basically represent the steps gives Dell.  Oh and make sure you save your new configuration.  .. .you wouldn't whatever it is embarrassing to occur.

  -

• solution for ESX iSCSI SAN

  Hello.

  We are looking into getting a SAN iSCSI for ESX.

  On readers, y at - there a big difference between sata and sas and sas 10K vs 15K?

  How iSCSI performance are compared to the SAN fiber?

  Can you guys recommend an iSCSI solution right?

  Excerpt from Dell PS4000 and it seems to be a good product.

  (On players, is there a big difference between sata and sas and sas 10K vs 15K?)

  Yes, 15 k SAS are faster and a bit more expensive, but worth it!

  (How iSCSI performance are compared to the fiber SAN?)

  ISCSI SAN is not as fast as the fiber, but compared to the local drive is a big improvement for your applications, users, etc.

  (You guys can recommend a good iSCSI solution?)

  Personally, I think Dell equallogic are great! PS600XV is what I put in place.

• How data travels in the iSCSI Configuration

  

  Hello

  I'm a little confused about how DATA moves through an environment of VI3.5 using iSCSI SAN.

  Before, I am attaching a schema, so everyone will be on the same page.

  It is a scenario with two servers ESX (ESX1 and ESX2), a physical server (Server1) and 4 Virtual Machines. (VM1 ~ 4)

  vmnic0 is for traffic Service console and the virtual machine.

  vmnic1 is for vmotion, but on the same subnet that are Virtual Machines.

  vmnic2 and 3 are for iSCSI and Service console for iscsi on a different subnet and different switch.

  The example is for the understanding of the performance and the communication network and not for security reasons.

  I know that when you want to use VMotion and HA, you need to use Shared Storage (IE iSCSI SAN) and your virtual machines are stored on the SAN.

  Here are my questions:

  1 - is this correct design?

  2-if I want to copy a VM1 VM2 to file, how data moves? (knowing that both are stored on the same SAN and they are both on the same ESX Server)

  3-if I want to copy a file from VM1 to VM3, how data moves? (Knowing that both are stored on the same SAN but they are on different ESX servers)

  4-if I want to copy a file to the server Server1 to VM1, how data moves?

  5 - If you do a VMotion VM1 from ESX1 ESX 2, how data travel? (I know for VMotion the contents of the RAM to the virtual computer will be copied to the second serve of ESX) This will affect the performance of the local network?

  6. What do you recommend to monitor traffic on vmnic?

  Please include the question number in your response.

  Thank you

  1 - is this correct design?

  OK for iSCSI.

  But you do not HA hat on the breakdown of the network cable or the NETWORK card (for the first 2 vswitches).

  It is good to have iSCSI separated by VM and VMotion, but usual for each vSwitch to give at least 2 cards of uplink.

  You can for example put VMotion and VM on vswitch, using 2 NICs and affecting a NIC preferred for the virtual machine and a preferred (different) for VMotion NETWORK card.

  2-if I want to copy a VM1 VM2 to file, how data moves? (knowing that both are stored on the same SAN and they are both on the same ESX Server)

  VM1 and VM2 could talk via the network of the VM.

  So VM1 get data from the vmknic2/3 (if is not in the cache of the comments), copy to network (vmknic0), VM and then store the data (and goes to vmknic2/3)

  3-if I want to copy a file from VM1 to VM3, how data moves? (Knowing that both are stored on the same SAN but they are on different ESX servers)

  Same as before, using 2 ESXs

  4-if I want to copy a file to the server Server1 to VM1, how data moves?

  vmknic0, then vmknic2/3

  5 - If you do a VMotion VM1 from ESX1 ESX 2, how data travel? (I know for VMotion the contents of the RAM to the virtual computer will be copied to the second serve of ESX) This will affect the performance of the local network?

  vmknic1

  6. What do you recommend to monitor traffic on vmnic?

  You can use the tab Performance on ESX.

  André

• Newbie on iSCSI Configuration questions

  Hello everyone

  I'm new to VMware. I have two questions

  (a) once I have add an address IP of SendTargets discovery, how can I update it? for example, if a new target is visible via the IP discovery after that it has already been added in VMware and I want it to appear.

  (b) is there a provision the disconnection of one specifying IQN (San identifier)? I went though VSphere Documentation and I couldn't find anything.

  (c) VSphere he iSNS support such as Linux (iscsiadm)?

  Thank you

  Welcome to the Forums-

  (a) you will need to go to the section of the configuration of the ESX host storage card in the client vSphere select initator iSCSI, then click Rescan - this cause a target command send sending sllowing to the discovery of new targets

  (b) No, there isn't a way to disconnect from a specific IQN I know

  (c) to the vSphere, I think not vSphere supports iSNS.

  If you find this or any other answer useful please consider awarding points marking the answer correct or useful

• Equallogic PS6000 + ESX iSCSI storage redundancy: LUN disappears when 1 switch off!

  Hello everyone, this is my first post here

  OK, so as the title says, I'm working on the redundancy under ESX. Because network configurations can be quite confusing I just did a quick draft of our infrastructure with one of my 3 ESX host and will try to explain as clearly as possible, the configuration details.

  In my ESX host, I configured a new vswitch with the vmkernel and vmnetwork joined 4 (NIC 2,3,4 and 5) my card NETWORK is configured as active in the collection of NETWORK adapters (also tried to put 2 according to availability) method of failover is Beacon probe (also tried with the status of link)

  On another VSwitch I have the console service with the NIC (NIC 1 and 6) 2 of the joint.

  My 2 switches are connected by a SHIFT of 4 links and the RSTP Protocol is active and works (although I have a lot of broadcasting activities, as soon as I connect my LAN switch to the SAN switches, but that's another story)

  My SAN is connected with 2 links on A button and switch B 2 for each controller. I created 3 volumes on the SAN that is each configured in my host ESX 3. So far, everything is great.

  Now, I pull the power plug from the switch a. switch B takes the lead and I can still ping SAN network lan switch, I can ping my small guest VM but the virtual machine itself quickly dies. I can't even it reboot or I get an error message indicating that the file is not found. So I go to my store of data, and it is when I see that it's empty! I need to open any new analysis of the LUN to again access to the data store and start my VM.

  From my point of view, although ESX detects that some links are down when I pull the cord, the iSCSI session just dies on me and will not "restart". I read stuff on multiple paths, but the "manage paths" button is grayed out, I'm not even sure that's what I need.

  So basically, as you can see I am quite new to all this and completely lost when it comes to things of redundancy, hell, I didn't even know on the tree covering weight before yesterday! So, if any of you guys can give me some advice on the realization of redundancy I look forward ^^

  Thank you very much!

  I wouldn't put my vmnetwork and my storage on the same vSwitch network.  I separate them into their own vSwitch and use two natachasery for each vSwitch.

  Once you have the traffic separated out, I'll make sure a vmkping, and not a ping to the storage target runs through each physical NIC.  Remove all cables and one at a time to create works of course routing their connection.

  -KjB

  VMware vExpert

  -KjB

  VMware vExpert

• 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.»

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• What is the hardware configuration recommended for 11 G R2 on Windows Server 2008 R2 64 bit

  We are about to move from 10 G to 11 G R2 R2. The platform provider supported for our application is Windows server 2008 R2 64-bit. I have to write a specification document to support my request for new material and I would like some guidance as to the recommended configuration. Environment development database server will have to host dev, test, and preliminary databases for a database of 10 GB. The production server will host only the production database.

  Any guidance appreciated.

  concerning

  Madre

  Hello

  It's all sorted out.

  concerning

  Madre

• Need suggestion for storage on the server ESXi5 iSCSI configuration

  Hi friends,

  I am new to vmware & I want t know if I have physical iSCSI card installed in my ESXi 5 & it connect directly to the server and then again I want to configure virtual SCSI for connection to the VM card? If so, why?

  Thank you and best regards,

  Pradip

  See page 63 of the http://pubs.vmware.com/vsphere-50/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-50-storage-guide.pdf link

• Software iSCSI configuration

  Where we get number IQN that we need to manually enter static configuration of the software iSCSI discovery.

  It depends - some have the ability to not be discovered. Give it a try, in case of doubt. If this does not work, then you will need access to the management interface or know someone who can.

• ISCSI configuration

  Hello

  I'm initiator configuration iSCSI on my ESXi 5 host software. I use the Dell PowerEdge r.620 server.

  How are iSCSI Broadcom cards will be copied into the storage card from vCenter Server view.

  At the moment I am unable to see any adapter storage Broadcom for the "storage card". I did all the steps below.

  (1) VSWITCH CONFIGURATION

  (2) standard vSwitch Configuration

  (3) add the VMkernel iSCSI Ports

  (4) ports VMkernel associated with physical cards

  But I am unable to see the storage card BroadCom for the "storage card".

  Please suggest.

  You won't see this map appears in the list of storage adapters. It is listed in the HCL as network.

  

  Enable iSCSI Software adapter, get properties for it in the list of storage adapters, and then configure the networking from there.

• Impossible to create great on ESX iscsi volumes

  Hi all

  I have 2 servers to ESX 4.1 new installation u1 nine directly connected to the new HP P2000 iscsi storage facility.
  HP Storage has 4 1 GB iscsi ports.
  They are:
  PortA1: 10.0.0.1
  PortA2: 10.0.0.2
  PortA3: 10.0.0.3
  PortA4: 10.0.0.4

  
  As you can see from the photos storage1 and storage2, I assigned Port A1, A2 to ESX1
  Other PortA3 and A4 to ESX2.
  I have on two servers, 10.0.0.5 and 0.6 vmkernel

  As you can see from picture1 iscsi connections seems to be OK. What I normally do after that is to go to Storage - storage to add.
  Image2 is what I see of the storage option that you want to add. And I got error on photo3

  Don't you think that it is bound to no limitation of capacity because I created a LUN with less than 2 TB and it worked very well.
  So should I split 6 to a 3 to make it less than 2 TB? should be a silly thing to divide it. There should be another options I guess?

  Thank you.

  This limit if for VMFS.

  NFS is not at the level of the blocks and he doesn't use VMFS, so you can have a great store of data.

  But vmdk are still limited to 2 TB max.

  André