iSCSI - performance iSCSI Lefthand storage

Similar Questions

• Nested ESXi 5.1 and iSCSI Shared Storage

  People:

  I am unable to get my ESXi servers nested to see the iSCSI shared storage, that I put in place for them.  I use iSCSI for the ESXi host, who holds the guests of ESXi, so I have a successful iSCSI configuration to use as my reference.

  Here's what I have for the host network config:

  iSCSI targets

  + IP1: 172.16.16.7 (subnet for host IP storage)

  + IP2: 172.16.17.7 (subnet for storage over IP comments)

  vSwitch associated vmnic2 on NIC IP storage

  + Port "IP storage" group containing virtual NIC both ESXi hosts

  + VMkernel Port for iSCSI host connections: 172.16.16.28

  Here's what I have to config network comments:

  + The highest virtual NIC group of ports "IP storage".

  + vSwitch with only a VMkernel port for iSCSI of the guest connections: 172.16.17.38

  From the iSCSI host, I am able to ping 172.16.16.28.  However, I am unable to ping 172.16.17.38, and here's the really confusing part - I am able to get an answer ARP of that associated with the VMkernel port with the correct MAC network CARD!  This eliminates all kinds of potential configuration issues (for example means bad NIC, bad IP, etc..)

  The firewall on the host indicates the software iSCSI port outgoing 3260 Client is open.  Capture of the target iSCSI host package reveals no. TRAFFIC from VMkernel IP guest when updating to storage adapters.

  What should I look at?  The configuration of the host against the host looks identical yet we work and there is no...

  -Steve

  In the debugging process so, I turned on the "Promiscuous" mode on the vSwitch associated vmnic2 on the NETWORK card on the host IP storage ESXi and poof!  Everything magically started working.  The iSCSI traffic be unicast, so I don't see why promiscuous mode would be necessary, but I can't argue with the results observed.  Clearly, I have more to learn more about nested ESX, that's why I'm playing with it.  :-)

  -Steve

• iSCSI SAN storage

  Hello

  I am trying to build a practice for VCP certification test lab.  I use Workstation 7.1.4 and ESXi installed on the same host.  Can anyone recommend a good 'free' iSCSI SAN storage virtual appliance?  I went through the market, but wanted to get a recommendation from experts.

  Thank you

  Kim

  There are various products that you can use. E.g. Openfiler, Starwind, open-e or VSA from HP. For the last HP offers especially for VMware Player/workstation demo version.

  André.

• 12 c grid rhel6 iscsi asm Storage Infrastructure

  I'm working on the construction of my 12 c Grid Infrastructure database by using the following:

  • RHEL 6.6
    • node rac1
    • node rac2
  • I use Synology NAS storage Oracle Clusterware RAC shared storage.  The following objectives were discovered by node rac1 and rac2. (/ dev/sda/dev/sdb/dev/sdc)
    • LUN/iSCSI shared CRS 10 g
    • LUN/iSCSI shared DATA 400 G
    • LUN/iSCSI shared FRA 400 G

  My question is?

  How do these iSCSI disks for ASM 12 c?

  Should I format each drive on each node and then oracleasm create discs?

  Please notify.

  BECAUSE two-node Oracle 12 c Grid Infrastructure installed on RHEL6

  Shared Storage for laboratory: Synology NAS which I created three LUNS/iSCSI devices:

  1 for the CRS

  1 for DATA

  1 for FRA

  Each node (initiator) discovered and connect on the objectives, the DATA and FRA

  I then used fdisk/dev/sda and/dev/sdb, / dev/sdc, which created

  / dev/sda1

  / dev/sdb1

  / dev/sdc1

  Initialized oracleasm on both RAC nodes and created the CBC records using the oracleasm createdisk CRS/dev/sda1

  Then oracleasm scandisk

  Then oracleasm listdisks

  And CBC, DATA and FRA discs seem to be working now.

• How to compare premises, iSCSI and storage NFS for VMware ESXi 5 with IO Analyzer?

  Hello

  I have 2 hosts ESXi 5.0 with a few virtual machines running. I would compare the IO throughput for my local storage, iSCSI and NFS vmware storage store. Can someone point me to the right direction? I read the documents and tutorials, but I'm not sure how to compare tests from these 3 options.

  I have a need to compare the following storage options.

  Local disk on the ESX host

  iSCSI on QNAP NAS device

  iSCSI on EMC e 3100

  NFS on QNAP NAS device

  NFS on EMC e 3100

  IOmeter seems to be good tool based on reading, but still not clear where to make changes to pass tests of storage to another.

  Thanks in advance,

  Sam

  If you use IO monitor, then you must simply vmotion the VMS to the data store for the device you want to test, and then run the test (and Records results).  Can vmotion for the following data store and repeat.

• ISCSI connected storage / access it from windows / backup

  Hello

  I have successfully created a cluster of ESX Server images computer virtual running of a LUN iSCSI on the network plan. However to support this until I need to be able to access these images from a windows machine.

  I installed the windows on windows iSCSI initiator and connected successfully. However, windows cannot read the formatted file as its VMFS3 system.

  IM only using standard backup for the moment software and intended to stop the VM machines one night to do it. However with no windows is unable to read the file system I can't.

  Read VMFS I need special backup software running or have I missed something?

  Thanks for the help

  Hello

  You will need to have VCB (VMware consolidated backup) installed on the Windows computer, this will help you in the backup.

  Thank you

  Samir

  PS: If you consider this answer useful please consider rewarding points

• performance of large storage spaces

  Hi all.
  Is anyone know how is better?
  I need to create the large table (about 400 GB), so I need big tablespace. How I need to transform this tablespace, what is the size of the blocks is better? And may be preferable to create a set of smaller files to the tablespace?
  By the way if I create indexes in other tablespace, is really bad performance?
  
  Anton.
  
  Published by: user9050456 on February 19, 2010 01:20

  Hello
  It is really preferable to indexes in other tablespace because this improves performance by reducing the IO as compare to put things in a tablespace. If you can put indexes in different tablespace.

  Thank you
  Rafi.

• storage iSCSI with UCS

  Hi all

  Can I ask a question regarding the connection of iSCSI storage for use with UCS. Look at us with Nimble iSCSI based storage & want to understand best practice recommendations on how to connect it to UCS to get the best level of performance & reliability / resilience etc.

  Another issue is more closely how VMware deals with loss of connectivity on a path (where double connections are the installation program from the warehouse to the tissues), would he re - route traffic to the path running?

  Any suggestion would be appreciated.

  Kassim

  Hello Kassim,

  Currently the agile iSCSI storage is certified with UCS 2.0.3 firmware version.

  http://www.Cisco.com/en/us/docs/unified_computing/UCS/interoperability/matrix/r_hcl_B_rel2.03.PDF

  The following guide can serve as a reference.

  Virtualization solution Cisco with the agile storage reference Architecture

  http://www.Cisco.com/en/us/solutions/collateral/ns340/ns517/ns224/ns836/ns978/guide_c07-719522.PDF

  In above installation, ESXi software iSCSi multipath with PSP Round Robin algorithm is implemented to take care of the IO and failover with load balancing two paths.

  HTH

  Padma

• iSCSI storage presented to the hosts managed by different vCenter Server - questions?

  I currently have three hosts (esxi 5.0) that are managed by vcenter server 5.5 U2. The hosts are attached to iSCSI LUNS (data warehouses) 10.

  I'm migrating to esxi 6.0 U2. For this, there are three new hosts have esxi 6.0 installed and managed by vcenter server 6.0 U2 U2.

  The plan is to detach/remove 5.0 5.5 U2 vcenter esxi hosts. Then import it into vcenter 6.0 U2 (a new cluster will be created). Once imported, uninstall the 5.5 vcenter u2. Then turn off the resident VMs imported esxi 5 hosts and move them to 6.0 esxi hosts.

  My query is regarding regarding storage.

  At present, three new guests see all storage the old 5.0 esxi hosts to see (guests are not in the cluster. "I'm still trying to put things up). That's because the new hosts were deposited to the same group on the side iSCSI initiator storage. Now things, data warehouses are visible by the hosts with esxi 5.0 (managed by vcenter 5.5 u2) and also the esxi hosts 6.0 (managed by vcenter 6.0 u2). The only VMs residing in esxi environment 6 is vcenter 6.0 u2 and update manager 6.0 u2. These are in a data store that is not any other virtual machines.

  That's no problem during the migration? I have not created a cluster for the esxi 6.0 hosts yet and plan to do after obtaining your entries.

  Thank you!

  No problem whatsoever, regardless whether if you do or that you add no vSphere 6 hosts in a HA cluster.

  If you temporarily enable EVC on the vSphere hosts 6, once all hosts are connected to the same vCenter you can VMotion all VMs to new hosts even without any stop. Clear CVS once the migration is complete.

• The upgrade to ESXi 4.1 with storage iSCSI software to ESXi 5.5

  I intend to upgrade ESXi 4.1 with which I have attached to ESXi 5.5 iSCSI software storage

  I've updated all my guests who were on the SAN storage with no problems.

  I would like to know that if it there's nothing I should take care before I update the host connected iSCSI to ESXi 5.5, as for the hosts with SAN attached storage I made to remove the cables of SAN before upgrading the host.

  Also, if all known problems, you will be informed during the upgrade to ESXi 4.1 to ESXi 5.5 with iSCSI Software storage, please let me know?

  If there is no different process to upgrade coz in ESXi 4.1 I do not see this link ports of iSCSI vmkernel ports software iSCSI but I know in ESXi5.5 we have to or I just launch a procedure of standard upgrade via the Update Manager and everything will be taken care?

  Thanks in advance

  With ESXi prior to version 5, linking ports had to be done via command line. However, if it has been configured correctly, you should be able to upgrade to ESXi 5.5 (assuming that the host has not been previously updated since version 3). BTW. the last time that I disconnected the host of storage for an upgrade has been with ESX 3.0.

  André

• Differences between the ISCSI connections to the storage in vSphere 4.1 and 5.0.

  I'm in trouble of setting up the connections of storage in a new VSphere 5.0 test environment. In our environment VSphere 4.1, it was possible to create a virtual switch add two Broadcom NetXtreme II 5709 NIC. Set assets. IP Hash value as load balancing. (LACP Etherchannel on physical switches) This configuration uses a grain port and a single IP address. Then add our NetApp NFS storage and ISCSI Equillogic storage. In VSphere 5.0, I can't create this same configuration. I have to create separate with separate IP addresses vmkernal ports? The idea was to have redundant connections to the storage and flow of these two NETWORK cards. Possibly adding additional if necessary to the futuer NETWORK cards. Any help with this would be greatly appreciated.

  How can I work around this:

  "VMkernel network adapter must have an active link exactly and no waiting rising to be eligible for the iSCSI HBA connection."

  I can certainly say that the way which allows you to configure the iSCSI Multipathing is incorrect.

  The main idea is to let Native Multipathing Plugin to decide what network path to choose, not the vSwitch.

  At the level of the network layer, you must have 1 VMK by a physical NIC.

  This technique applies as well for vSphere 4.1 and 5.0, but with the 5.0 it is configured easier and more quickly.

  Here's a very brief consequence of steps

  1. get 2 VMK interfaces and assign an IP by each VMK.

  2. set each VMK to use only one physical NETWORK adapter

  3 GB with storage iSCSI software adapter, turn it on and bind your VMKs 2.

  4 connect to your iSCSI storage space

  5 rescan devices, create the VMFS datastore

  6. set the desired load balancing VMFS method or just set up a prior default create new VMFS

  and it is strongly recommended to read this guide - http://pubs.vmware.com/vsphere-50/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-50-storage-guide.pdf

• Iscsi fibre and 5.5 to 6 migration

  So I have a project going now, where I am moving from iscsi connected storage storage fiber connected using 2 data warehouses.  Addition of 2 new hosts and by removing the 4 former hosts. I have 8 guests that I need to change, but I don't have time to stop close all and migrate on and get back to the top. So I try to find the best possible scenarios for this initiative. So far, I have 3 hosts in fiber, but the other 5, that I don't have.  What I'm running into the fact that I have DRS off so I have to manually managed my vm so I'm not more taxing any one host. So I thought I'd do temp cluster to move my old 4 hosts that I do not plan to update or use this way I can keep my more critical data/vm is there while I prep and move all my other vm of connected fiber 6.0.0u1 new guests. But I don't know if it's the right way to address the issue.  And I'm sure I missed something while typing this stuff, but I'll try to find the best way to describe what I have and what I'm trying to accomplish. Looking for some thoughts or ideas that I have never done this kind of forward movement. Thanks for your time.

  I did it a couple of times in the past, and what you describe should work just fine. If you don't have a lot of settings of cluster you want to keep (ie. you can easily configure on a cluster) simply to create a new cluster, DRS/HA, with new hosts, migrate virtual machines for free a host on the old cluster removal/reinstall the old host to the new cluster and then continue with the remaining virtual machines migration. If in the new cluster hosts are compatible CPU (i.e. share the same mode of VCA) migration can be made without interruption of service.

  A few additional thoughts:

  • If you run base/Hot-add VM backups. ensure that backup devices are available on the two clusters with access to appropriate data storage.
  • According to storage systems, you can benefit (IO performance) to distribute virtual machines through more than just 2 data warehouses.

  André

• iSCSI / vmkernel multipathing vs NIC teaming

  Hello

  I know of Configuration of VMware SAN Guide provides information about how to configure iSCSI multipath with vmkernel interfaces double on various uplinks.

  What are the disadvantages of using basic NIC teaming instead? Just an interface of vmkernel on a vswitch (d) with two uplinks. It will work properly about redundancy and failover?

  Kind regards

  GreyhoundHH wrote:

  What are the disadvantages of using basic NIC teaming instead? Just an interface of vmkernel on a vswitch (d) with two uplinks. It will work properly about redundancy and failover?

  I guess the difference is while using "Port Binding" iSCSI initiator uses vSphere Pluggable Storage Architecture to handle the load balancing/redundancy, that can make better use of multiple paths to NETWORK card available. Otherwise, the initiator will use vmkernel stack ensures redundancy network and balancing in the same way as a normal network traffic.

  I suggest that you look at the great post on iSCSI multi-vendor, I think the 2 statements below will summarize the difference:

  "

  • However, the biggest gain of performance allows the storage system to scale the number of network adapters available on the system. The idea is that multiple paths to the storage system can make better use multiple paths, he has at his disposal than the consolidation of NETWORK cards on the network layer.
  • If each physical NETWORK adapter on the system looks like a port to a path to the storage, the storage path selection policies can make best use of them.

  "

  
  

• NFS and iSCSI

  Hi all

  I will not go into another performance of iSCSI vs NFS because it isn't of interest to me, I would like to gather your thoughts on why you chose NFS or iSCSI and also the differences between the two because I'm not sure.

  The reason behind this, is based on a clean install of our Center of virtual data I have will happen soon.

  At the moment we have currently 5 virtual machines running on ESXi with two virtual machine to connect to an external iSCSI (RAID6) storage. This has worked well for over a year. (So I have no real experience with NFS)

  ESXi and VM host all five is on a 10 k SAS drives RAID1, but now I'm going to follow best practices now that we bought VMware Essentials.

  I'll put the host on the machine and the VM 5 on another separate NAS (ReadyNAS NVX) data store. I will use one of the 4 NETWORK card to connect directly on the NAS using a straight through cable, and the other three in a switch.

  Now, this is why I ask the question. Can I use NFS or iSCSI, on what I've seen there is a lot more technical documents and videos based on iSCSI, but according to me, it's because its aimed at the business market and the huge amount of VM.

  The future may hold an another VM 2-4 but no more than that.

  I have been recommended NFS in the external network manager and trust his opinion but feel that I have no experience of NFS.

  Tips are welcome.

  Specification of the server

  Reference Dell R710

  2 x Xeon processor Sockets (don't remember what model I'm typing this at home)

  24 GB Ram

  2 x RAID1 SAS drives

  4 x Broadcom NIC with iSCSI unloading

  This is the IP address on the cable, a crossover will do.

  AWo

  VCP 3 & 4

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• ISCSI or NAS

  Hello

  Does anyone has information on difference between ISCSI and NFS storage prod.

  the drawbacks to the use of the NFS storage.

  Concerning

  Anil

  Save the planet

  Hello.

  Check out the study of comparison of the performance of the storage Protocol by VMware.  They are very close.

  I can think of has a disadvantage is the cost (according to the seller).

  Good luck!