Controllers of the array failover (Dell md3020i, esxi5) and VAAI

We lack 6 5.1 esxi hosts that use the vmfs5 storage provided via iscsi from a double controller Dell md3020i.  Our charge approximately 900 inputs/outputs, but can boost 1800 IOPS / s.

During periods of high load, our virtual disks to failover from one controller to another.  This does not stop time, but produced a few problems on the virtual disk of balancing on the controllers.  We have opened a folder with Dell, and they see mistakes ancient IO from esxi hosts.  Dell is investigating a possible firmware (not yet released) was updated and also suggesting an update of firmware of the hard drive.  They also mentioned that we can almost be the ability of the matrix (in terms of IOPS / s).

We also opened a case of VMware support.  They recommend that we disable VAAI. (http://kb.vmware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1033665).  But all what I have read talks about the benefits of performance of the VAAI and our table officially support it.  I ran this suggestion by Dell, and they disagree - recommend us keep active VAAI.

So, we are stuck with what to do next.  Suggestions from the community on VAAI or other changes to help with our table failover problem?

Thank you

I don't think that VAAI is a problem. It could due to an overload on the disk due to the IOs, it is moving to the other controller. Please update the firmware...

You have excerpts from newspapers pointing to older IOs that shows problems with ESXi

Tags: VMware

Similar Questions

  • Automatic indexing does not as soon as the first element of the array.

    Hello

    I have a state machine that uses automatic indexing in most of his State to write the registry to set the part for some test.  When the state machine reaches the section 'Now playing' (the fourth State, second battery sequence) I have a picture of two equal elements related to looping for to write the required registers for this specific test.  When I enter the current state read the the first address is the second element of the array which is '1' location and not the first address that must be '0 '.  I closed the program and restarted LabVIEW but I always get the second element in this loop that maintain the form part works correctly and I get an error because the first element turns on the chip.  Is there something I'm not see when it comes to self that he would keep from starting at the first element of indexing?  Please take a look and let me know what I can do wrong.  I have attached the main program and the print loop results screens and test probe.  Any help will be great.  It worked last week.

    I don't see no problem at all when I copy the loop in an another VI in order to run it. Your jpg shows nothing on the values of the probe.

  • Disconnect the touchpad on Dell inspiron 1720

    This dell is a good laptop but when the touchpad is still disconnected. The touchpad can be disabled once. If ever, she comes back, you can not

    Turn it off again. Does anyone know how to permanently disable the touchpad?

    Hello

    Check with support of the manufacturer system, documentation online or forums that there is probably
    Shortcut keys that enable and disable the touchpad functions.

    Dell - disable or enable the touchpad by using the access key
    http://support.Dell.com/support/topics/global.aspx/support/KCS/document?c=us&docid=424135&doclang=en&l=en&s=Gen&cs

    Dell support
    http://support.Dell.com/

    Dell support drivers - product manual & warranty Info (left side) - and much more
    http://support.Dell.com/support/index.aspx?c=us&l=en&s=DHS

    Dell forums
    http://en.community.Dell.com/forums/

    Parameters for TouchPad located in the control panel - mouse (there may be several tabs with TouchPad entered)
    and some come with a utility that loads in the Notification area next to the clock in the bottom right.

    ==========================================

    If necessary: (make sure that you have restarted at least once, if the above did not work)

    Panel of configuration manager devices - mouse and pointing devices - Double click on the touchpad - the driver tab-
    Click on update driver (it comes may not do anything like MS is far behind the drivers of certification), now right CLICK
    on the TouchPad and UNINSTALL.

    Then go to the USB and UNINSTALL ALL controllers except the category itself (all in). RESET

    This will refresh the driver for the TouchPad and battery USB. This does not prevent the touchpad from working.

    The similar procedure on XP, Windows 7 and Vista is the same, except that we need to clear the specific device if present.
    http://support.Microsoft.com/kb/310575

    Then go to the system manufacturer's website and get the latest touchpad drivers.

    Download - SAVE - go to where you put it-click on - RUN AS ADMIN.

    ==========================================

    This utility also allows to control the TouchPad:

    TouchFreeze
    http://code.Google.com/p/TouchFreeze/

    I hope this helps.

    Rob Brown - Microsoft MVP<- profile="" -="" windows="" expert="" -="" consumer="" :="" bicycle=""><- mark="" twain="" said="" it="">

  • How to generate the array Diagnostic Utility ADU for Esxi server

    How to run Diagnostic Utility ADU or HP Insight Diagnostics HP Insight Diagnostics table to collect the status tables and logs data FRO an Esxi Server

    How to generate the array Diagnostic Utility ADU for Esxi server

    Example:

    Download the package .vib here: http://vibsdepot.hp.com/hpq/feb2013/esxi-5x-vibs/hpacucli/hpacucli-9.40-12.0.vib

    and place it on a store of data seen by the host...

    Install it using the CLI:

    software esxcli vib install d vmfs/volumes //hpacucli-9.40-12.0.vib

    Now run it:

    ~ # cd/opt/hp/hpacucli/bin

    / opt/HP/hpacucli/bin # . / hpacucli

    HP Array Configuration Utility CLI 9.40.12.0

    Detection of controllers... Fact.

    Type 'help' for a list of supported commands.

    Type "exit" to close the console.

    => ctrl all diag file=/tmp/my_ADUreport.zip ris = on = on zip xml = on

    Generation of diagnostic report... done

    -Online output

    / opt/HP/hpacucli/bin #.

    my_ADUreport.zip in / tmp can now be downloaded from the host...

    It could be that useful...

    / Rubeck

  • Questions about to determine the size of the array of data storage with flexibility

    I try to use the CVI function below to load data from .csv file to the table that I was intending to use later:

    filereturnvalue = FileSelectPopup ("c:\\Users\\Desktop\\FileDirectory", "*.csv", "", 'Select the data file', VAL_LOAD_BUTTON, 0, 0, 1, 0, LoadFilePath);

    FileToArray (DATAArray, VAL_CHAR, LoadFilePath, MaxDataSize, 1, VAL_GROUPS_TOGETHER, VAL_GROUPS_AS_COLUMNS, VAL_ASCII);

    For the data table "predetermined", it is quite straightforward, because the size of the table is already set.  However, I wonder if there is anyway I could use CVI directly import data and determine the size of the array on the fly?  Which means that the user need not know the length of the data, and it could be determined then to import the file.

    Hello

    for ASCII files, you can do so in any first read the file and counting the newline characters, something like:

    int file_handle;
    int index;
    int size = 0;
    char line_buffer [80];

    If (OpenFile (...) > 0)
    {
    While (ReadLine (...) > 0)
    {
    size ++;
    }
    }
    CloseFile(f) (file_handle);

    This way you can determine the number of rows you have, but you must have an idea of how long a line may be, one number per line or 32000 because you must specify the size of your line_buffer.

    In the next step you analyserions monotube for occurrence of your column separator (say a ;) to determine the number of columns (separators found + 1).

  • How can I index an element of the array as "index Board" function to labview?

    Hello:

    I am looking for a method to search an array with indexes and return the element specified by the given index.

    as the array index of the labview function, but I can't find an exact symbol in teststand-table-operations/functions.

    I am new to teststand and everyone knows how to use labview in teststand.

    anyone can teach me?

    Thanks in advance!

    Thanks anyway, found in the API

  • What is READ the array returned by the DAQmx meter? How can I know the two functions DAQmx READ data stream in the same WHILE loop?

    I have a question about the order of execution.  In the WHILE loop, I have two things to measure, period and tension using the DAQmx READ functions for voltage and the meter.  In the end, I want to collect these data as points almost simultaneously as possible, as a pair and then send them together to another piece of code (not shown here) which them will result in some sort of command for an engine.  It would be run, and then I want to perceive the tension and the period at a time later and do the same thing.

    (1.) I'm a little confused on what the meter of the READ function is back because it's a table.  What is a picture of?  I thought that it was up to the value of the individual periods between rising edges.  The output of the counter 1 DBL d's a table. How many elements in this table, and what determines the size of this table?  Are the elements of the array the individual delays between the edges?  How many values are stored in the array by executing?   We take the AVERAGE of the last 15 items, but do not know if we are throwing some of the data or what.  How to understand the composition of this painting?  How can I change the composition of this painting?  Is it possible to measure only one period at a time, for example the time between TWO edges?

    2.) Will this WHILE loop execute as it gathers tension and a "period table ' (remains to be understood by me) by TIME running in a loop?  In particular, we want that the value of the tension associated with the value of the AVERAGE of the period "array", so we can use two data items to create orders of next control every time that the two values are reported.  The structure for the delivery of vi will be attached data in pairs like this?  I understand that one of the READING functions run not before the other function of READING in the WHILE loop.  I want that the period "means" and "strain (Volt) collected at the same pace. This vi will he?

    Thank you

    Dave

    Hi David,

    I suggest including the DAQmx Start Task function. If it does not start before the loop, it starts the loop and work very well, but it is not as fast and efficient. In the model of task status, task wiill go to run the checked each iteration of the loop and then back the time checked running when it restarts.

    The status of the task model: http://zone.ni.com/reference/en-XX/help/370466V-01/mxcncpts/taskstatemodel/

    Kind regards

    Jason D

    Technical sales engineer

    National Instruments

  • How to change the value of the array element by using the property node

    Hello all :)

    IM using a table in the drop-down list box. the size of the array is not fixed.

    I want property strings [] from the drop-down list box to enter text in selection, but since I placed it inside the table im unable to use this property.

    I used 'arrayelem' reference property and property node connected to it but got no strings [] in the selection.

    so is it possible that I can use property strings]


  • Calc independent PtByPt on the elements of the array

    Hello

    I have a double table as input, and with each iteration of the main VI, I would calculate the average and standard deviation separately on all the elements using PtByPt VI.

    Fortunately, in my case, I know that the size of the array is maximum 11. My solution works, but I would like to know what is the best approach, if I have to deal with a wider range, and especially if I don't know the maximum size in advance...

    That's my solution and the VI.

    Thank you!

    PS: I have renamed the extension VI VI lives to fool the buggy uploader...

    It is not too difficult to change the screw 'PtByPt' to be RowByRow by changing state data.  But I would probably go the dynamic road first if I knew the number of columns where bounded by a reasonable number.

  • allocation of an array of 2d in labVIEW and move to the DLL function to obtain data

    Hi all!

    I searched a lot about this, but one cannot find any solution. Please find attached the vi that I try to get a unit of 32 channels data,

    100000 samples per channel with 14-bit resolution. And please also find enclosed the header for my dll file. (in the header, it is the GetBuffers function).

    There is not a lot of data, it is a little more then 6 MB in the task of LAbVIEW Manager eats about 30 MB more memory, then it should. Are there explanations why?

    Because there is much more data in a single channel (million samples or more)

    Then I will try to allocate a 2D to data array, but when I try to run my LabVIEW vi crashes.

    Could you please help?

    Best regards

    Tomzi

    Dear Tomzi!

    To allocate the data in a table in LabVIEW, you must always initialize, as in a you must have a valid entry on cell (x-, y - 1) have a size of table of (x, y). It is usually best to use the function Array initialized for this purpose.

    There are ways to pass arrays 2D to DLLs, cand find you examples of both in examples > communicate with external Applications > external Code using the > integrating DLLs > DLL.vi call. Basically, LabVIEW can pass in the form of a big table 1 d 2D tables, so you'll need to spend too much table size index it. If you pass the array 2D handles it is preferable to use the typedef that LabVIEW generates for you, something along the lines of

    / * LabVIEW created typedef * /.
    typedef struct {}
    Int32 dimSizes [2];
    Double elt [1];
    } TD1;
    typedef TD1 * TD1Hdl;

    I hope this helps.

    Best regards:

    Andrew Valko

    NOR Hungary

  • Reference to the array of Clusters with an array element

    Hello

    I have an array of clusters of CONTROL (qualifying as "upper-tier cluster table") with one of the items is an array of cluster cluster (see attached).

    I intend to "reference" of this cluster of high level at different screws (as add item VI, insert item VI, delete the item VI etc.) and access (add/edit delete) the elements of this array.

    In my code, how I cataloged the array element (cluster) on the cluster internal (as shown on the figure)?

    I use LV RT on PXI.

    Hello smercurio_fc,

    Thank you for your example! Just a question: actually, with shift registers, is an example of creating a local copy of the full range? Even if the value of the lowest level cluster is changed, is the complete table is updated at the end (registry value to offset the full picture at the right end is updated using the reference node and property)? This VI will be slow when the size of the array becomes great?

    Comment of nicely.

  • change the array type in a script

    I have a script that uses a model to generate code. So far, I have a refnum in an array of doubles (the default type of the table in the model). Now, I need to change the types of elements in the array. I tried the 'set' vi in utilities VariantDataType table, but does not. How can I do this?

    Here is a way.

  • copy data in the array constant

    Hi, I have seen in an example that someone stores data of a spectrum in a constant, table joint please.

    I am trying to do the same and copy a colum given the same constant and found that it is not easy, as I thought?

    Can someone help me please?

    Thank you

    The array to an indicator of output, right-click in the table and replace constant.

    /Y

  • by passing the array of strings of Teststand to LV dll

    Hello

    I wonder, why is it not possible to pass an array of strings 1 d of TestStand to a dll, which is compiled with LabView. By the way the PropertyObject works very well, but as parameter category "Array of Strings" exist in the call dll TestStand pane, it should be possible to pass an array directly. I get an empty dialog box, where I try to view the contents of the array passed directly.

    Why it does not work?


  • mathematical calculation in script on each element of the array.

    Hi all

    I am trying to write the VB script in which I want to do different mathematical operation on each element of channel-specific data. For example, for each element I want to find the next two index given way and both before and after publication of the results on the basis, then it is more calculating.

    It will be very useful if someone can guide me in the execution of operation on the elements in the array inside the script of tiara, that we can do in labview using indexes in the table. There are built-in math and statistics in tiara tab analysis tool. But I want to design for my custom mathematical operation.

    Thnks

    HS

    Hi HS,

    Here is a version 10.2 tiara from what I understand ask you:

    Window = 2

    Denom = 2 * window + 1

    Threshold = 10

    Chnum = CNo("[1]/Speed")

    FOR i = 1 + ChnLength (Chnum) window - window

    Sum = 0

    FOR j = i - window to i + window

    Sum = sum + ChDX (j, Chnum)

    NEXT ' j

    Ave = sum/Denom

    IF Ave > threshold CAN

    ' do action of contingent

    END IF

    NEXT ' I

    Brad Turpin
    Tiara Product Support Engineer
    National Instruments

Maybe you are looking for