What is the IOPS / s?

Similar Questions

• Dimensions of the IOPS / s

  Hello

  As a first step, I would like to apologize to a silly question.

  I have a small test lab that runs on small Synology NAS with two servers IBM 3560.

  I'm trying to solve my laboratory IOPS performance / real s

  Synology NAS include discs put in red edition of WD 2 TB mirror.

  I deploy two models of vmware I/O monitor eggs in order to findout the number of IOPS / s.

  What you can see below... (Model test MAX IOPS)

  

  My question is why this measure shows around 8000-9000 IOPS / s when some internet HDD tests of these discs has about 200 IOPS / s...?

  Thanks in advance

  About the last tests, can I run some domain controllers (file server), mail server and maybe a server snmp and vpn for about 50 users?

  That is the IOPS performance / s enough?

  Predict how such joint rate is hard to say, it's probably especially according to the type of workload to generate these users.

  Looking at the figures alone, my little finger tells me it should be ok for users regular (outside of things like hours of backup), but in the end, you have to find yourself.

• What is the advantage to affect multiple virtual machines in a data store?

  Hello

  Quite a question stupid and basic, but I can't answer . What is the advantage of having multiple virtual machines in a store of VMFS data instead of having each VM in another VMFS data store? (eg. 3 VMs in 1 data store or 3 data warehouses and each virtual machine in one of them). I can only think about the ease of management for storage administrator because it creates only a single large LUN.
  
  Thank you

  By allowing multiple virtual machines in a data store, you can run more than 256 virtual machines in a DRS cluster.

  As a host has a limit of 256 scsi identification numbers, which means that it accesses no more than 255 LUNS shared. 1 scsi ID is used for local storage.

  In a DRS cluster as each host must be mapped to the same data warehouses to ensure that virtual machines can be moved on the cluster and run on any of the hosts.

  Now in my life as an architect VMware PSO I saw that a lot of virtual machines that require a single data store. The main reason to isolate a virtual machine on a data store must provide sufficient i/o performance. This can be achieved with other solutions than to isolate a virtual machine on a data store. Having a properly architected storage subsystem is crucial, vSphere can get out of a very large number of the IOPS / s. With technologies such as SIOC and DRS for storage, you can check that the virtual machines receive IO performance according to the needs.

• Limitation of the IOPS / s on a virtual machine

  I found this article that allows me to limit the number of the IOPS / s on a machine virtual (http://kb.vmware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1038241). How is it possible by programming? What I really need to edit the VMX file directly because I can't really find any documentation in the VM object model that modifies this.

  @EOM,

  To answer your question, Yes, this can be done programmatically using a script/program. The method that you are looking for if you're familiar with the vSphere API is ReconfigVM_Task() (it's a catch-all function to perform any modification to a VirtualMachine). You have the ablity to set up the two actions and IOP limits using the new property storageIOAllocation (http://vijava.sourceforge.net/vSphereAPIDoc/ver5/ReferenceGuide/vim.vm.device.VirtualDisk.html), introduced in vSphere 4.1 that is defined on a ramdisk for a virtual computer.

• How do you collect the IOPS / s?

  I know I must be missing something, but what is the best way to collect the IOPS / s of all ESX host?  I have a client who needs a new SAN, and I want to make sure that it is correctly sized.  I know how to shoot in a virtual Windows machine, but I only care about the entire ESX host and don't want to go through the headache to each virtual machine.

  In the command line - run "esxtop" and use the "d" (drive option).  You will be able to see the OPS are / s then.

  DB

  VMware communities moderator

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