CSV vhdx files and SAN optimization - sequential or random access or...?

Is there a best practice on the SAN optimization of LUNs for CSV VHDX files - e.g. sequential vs. random access?
We recently set up a small two-node Hyper-V 2012 R2 Failover Cluster. As I was creating LUNs for the CSV vhdx files, our SAN (like most, I think) has some pre-set optimization options which are more or less sequential vs. random access. There's now the abstraction
layer of shared VHDX files and the actual data those VHDXs are being used to store. Are there any best-practices for SAN optimization in this regard?
In other words, I could see:
A. Cluster-shared VHDXs are accessed (more-or-less) based on the type of data they're used for
B. All cluster-shared VHDXs are (more-or-less) accessed sequentially
C. All cluster-shared VHDXs are (more-or-less) accessed randomly.
I have one source that says that for a relatively simple SMB setup like we have that "C" is the recommendation. I'm curious if anyone else has run into this or seen an official best-practice...?
There as good article published recently by Jose Barreto about CSV performance counters. See:
Cluster Shared Volume: Performance Counters
http://blogs.msdn.com/b/clustering/archive/2014/06/05/10531462.aspx
You can run DiskSPD or Intel I/O Meter yourself to see what workload you'll get @ CSV with 10+ VMs doing different I/O types. We did and you'll get
4-8KB 100% random reads and writes (just make sure you gather statistics for a long time).
So that's type of workload you could optimize your LUN @ SAN level.
StarWind Virtual SAN clusters Hyper-V without SAS, Fibre Channel, SMB 3.0 or iSCSI, uses Ethernet to mirror internally mounted SATA disks between hosts.

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Files and Streams java -- Sequential access file-- Plz help me

I am able to add records in sequential file and then also I am able to display each record sequentially.
But after closing the file if I open the file for adding records, the newly added records are not being displayed while clicking the "next" button to read them.
How to bring the pointer to end of records in sequential file , so that when I stat adding records after opening an existing file, they should be added successively after the last record in that file.
enter = gui.getTask1();
          enter.setText("Enter");
          enter.setEnabled(true);
          try
          FileOutputStream fos = new FileOutputStream("c:/file.txt",true);
          output = new ObjectOutputStream(fos);
          enter.addActionListener(
                    new ActionListener()
                         public void actionPerformed( ActionEvent e )
                              addRecord1();
          catch(Exception e)
               System.out.println("Error in ObjectOutputStream before pressing Enter button");
private void addRecord1()
          String[] fieldValues = gui.getFieldValues();
          if(! fieldValues[0].equals(""))
               try
                    int id=Integer.parseInt(fieldValues[0]);
                    if(id>0)
                         Record rcrd = new Record(id, fieldValues[1], fieldValues[2]);
                         System.out.println(" " +rcrd.getString()+"\n");
                         output.writeObject(rcrd);
                         output.flush();
                         gui.clearFields();
                         display.append(" "+rcrd.getId()+" "+rcrd.getName()+" "+rcrd.getAddr()+"\n");
                         readf.setEnabled(true);
               catch (NumberFormatException nfe)
                    JOptionPane.showMessageDialog(this, "Incorrect id", "Invalid number formate", JOptionPane.ERROR_MESSAGE);
               catch (IOException io)
                    closeFile();
     }Message was edited by:
MissJavaa

You can't append multiple ObjectOutputStreams to the same file unless you know where one ends and the other starts and you use a new ObjectInputStream at each join. And even that mightn't work because of buffering. Keep the file open or start a new file.
And I wouldn't call the file 'file.txt', it isn't a text file.

Installed OS X Server, lost access to files and programs. Need to regain access but unsure how?

I have just installed OS X Server. I have shut the Computer down overnight and on restart has removed my access, personal settings and access to all my programs and file. I have checked the size of the hard drive, it appears all files are still present? Under settings I am still listed as a administrator, I have accessed 'Applications' and opened OS X Server. My Access is still Administrator but I don't know how to return my profile to have access to all files and restor my desktop and settings.
I someone could help that would be fabulous.

Safe to presume you didn't make a cloned backup of your system prior to installing the software?
At this point it is difficult to tell what original settings are left. Why not do the Time Machine restore?

How should I set up my csv data file and data load structure?

I'm a little lost on the best way a) format my data for csv and b) what type should it be loaded as. It is for a spaceship battle game.
InternalItems = some data type that can be from 0 to 20 items like computers, engine boosters, etc.
ExternalItems = some data type that can be from 0 to 20 items like weapons, sensors, etc.
Format for InternalItems and ExternalItems "Database ID / Item ID,"
Multiple items would look like "2/1, 1/2, 2/1"
// database id 1
ship.csv
ID, Name, ExternalItems, InternalItems
1, "Enterprise","2/1, 2/1", "3/1"
2, "Galactia", "2/1","3/1"
// database id 2
weapon.csv
ID, Name, Damage
1, "Phaser", 5
// database id 3
engineboost.csv
ID, Name, Boost
1, "Super Fuel", 4
LoadCSV parses External items and loads them into the ship class.
1) Is there a better way to set up the External/internal lists? "2/1, 2/1, 2/2" etc..
2) Once parsed, how should these be loaded into a ship class? ArrayList? Array? Hashtable? Basically in battle, the app should loop through weapons to shoot them. For a ship editor, an arraylist seems best, but for optimized combat it seems like an array or hashtable.

1) Is there a better way to set up the External/internal lists? "2/1, 2/1, 2/2" etc..That's the best way to store an array of an array into a 2D grid.
2) Once parsed, how should these be loaded into a ship class? ArrayList? Array? Hashtable? Basically in battle, the app should loop through weapons to shoot them. For a ship editor, an arraylist seems best, but for optimized combat it seems like an array or hashtable.If you think the searching is going to slow you down, hash table and array lookup is the way to go. If your indexing range is small, array lookup is the fastest. Hashing requires running hashCode() and does unoptimized searches during collision.

How do I add a feature/role to an offline .vhdx file?

Hello to Anyone that can help with this frustrating task that should be easy,
Ok I looked at Example 3 here:
http://technet.microsoft.com/en-us/library/jj205467.aspx
and tried to use that format to install features and files to a .vhdx file. I tried different syntax but no luck. I don't know what i typed wrong or what i should type? If i wanted to install dns to an offline .vhdx file and that file is in
my c drive, how would i type the syntax? I have tried and failed over and over again. Here are some of the syntax i have tried in powershell:
install-windowsfeature dns -vhdx c:\
install-windowsfeature dns -vhdx c:\VM TEST.vhdx
install-windowsfeature -dns -vhdx c:\
install-windowsfeature -dns -vhdx c:\VM TEST.vhdx
install-windowsfeature -name dns -vhdx c:\
install-windowsfeature -name dns -vhdx c:\VM TEST.vhdx
All these syntax are wrong and am frustrated. btw, the file i want to add dns to is "VM TEST.vhdx"
I have researched and found this video:
http://www.youtube.com/watch?v=r30BxBawNOE
but the guy doesn't give a specific example for me to follow in regards to location of his vhd file and I am using a .vhdx. Again all i would like to learn is how to add features and/or roles to an offline .vhdx file and i am trying with "dns"
since it is so easy to type. What would be the proper syntax? If anyone can chime in that would be great for this seems to be a simple 101 type of question especially for mcsa or mcse certified people out there. I am totally new to this and
can't do this one simple task. Help please.

Hi,
You install a feature/role to a VHD with the -Switch VHD (even if it is a .vhdx you are pointing at...)
See my example below, that installs the DNS server on a vhdx. The switch -IncludeManagementTools do also give you the management Tools for DNS (both Powershell and MMC...)
Add-WindowsFeature -Vhd "C:\SERVER.vhdx" -Name DNS -IncludeManagementTools
MCT | MCSE: Private Cloud/Server, Desktop Infrastructure

Windows 7 won't allow me access to some of my files and folders

I installed a new copy of Windows 7 Professional SP1 on a new PC several months ago. I then restored my documents from a backup made on my old XP system. Ever since installation, I have had problems with Windows denying me access to some of my files
and folders. I have full administrative rights on the machine. The various problems I've had, and steps I've taken to resolve them are:
1. Try to open a file and get a message telling me I need permission from Steve to open this file. I am Steve.
2.Try to open a file and get a message telling me I don't have permission to open it, but click this button to get permanent permission. I click the button, but still don't have permission.
3. I then started opening the security settings for individual files and setting myself to have full access, and as the owner. This worked for individual files.
4. I then tried setting the same security settings for entire folders. This didn't work and didn't improve anything.
5. I tried setting the security settings so that Administrators owned the files/folders (I am an administrator). This also didn't achieve anything.
6. After several months and still getting these messages, I got sick of trying to overcome them and decided to apply these security settings to my entire C: drive. I set myself to have full access and to be the owner of the C: root directory and all sub-objects.
7. I inserted my Windows installation disk and tried to run the System Repair. It told me that System Repair was not compatible with the version of Windows I was running! WTF???
Not only did setting permissions for the entire C: drive not help me, it has made matters a WHOLE lot worse. I now don't have permission to open almost all my files/folders. Most applications I try to run (Word, Excel, etc.) either tell me they can't open
a file or let me open and edit it, then tell me I don't have permission to save to that location. When I press the Send/Receive button in Outlook, it now tells me I don't have permission to perform that action. I've tried going back to a restore point before
I made this change, but that didn't change anything either.
This problem has been driving me insane for months and now my PC is almost completely unusable and I'm considering a disk format and re-install Windows. When I initially installed it, so many problems came up in the first few weeks that I'm very reluctant
to go through this procedure again. I spent hours and hours trawling the web looking for solutions to things that didn't work.
Does anyone have any good news for me? Because as far as I'm concerned, Windows 7 is so far a piece of garbage.

Hi Steve1904,
So you have use the backup and Restore to restore your files from Windows XP to Windows 7 directly?
This should be considered not work.
If you would like to transfer files between Windows XP and Windows 7, you need another tool called Windows Easy Transfer.
See the article below if you would like to upgrade from Windows XP to Windows 7:
Upgrading from Windows XP to Windows 7
If possible, follow the steps there, then things should be OK.
Best regards
Michael Shao
TechNet Community Support

Read a text file and populate table

My email addres is [email protected]
I am new to java. My project requires me to read a text file and pick some values from the text file and populate a table in MS Access. The main fields are from the TEXT. Some of the columns to be read are:
Transaction ref.
Amount
User ref.
Date
The text file is as follows:
Receiver =
FBNINGLAXXX LT : A
FST BANK OF NIGERIA PLC
LAGOS
LAGOS
NG
NIGERIA
Transaction ref. = SPLOUK01P0008888 Related ref. = 00077003
Amount = 16675750, NGN Value/Date =
Format & Validation
Version = 0205 Checked = Minimum
Netw. Appl. = FIN Passed = Minimum
Sender to Receiver Instructions
Banking Prior. = User ref. = SPLOUK01P0008888
Warning Status =
Possible Duplicate Emission
Appl/Serv = SWIFT Interface
RP & Ft = SIfrom_SWIFT
Date/Time = 01/04/03 18:53:19
Text =
:20:SPLOUK01P0008888
:28D:1/1
:30:030401
:21:00077003
:32B:NGN16675750,00
:50H:/4072010014877
SPDC FBN East Main A/C
:57D:WEMA BANK PLC
PLOT 22 TRANS-AMADI BRANCH P.H.
PORT HARCOURT.
RIVERS STATE.
:59:/0421002101818
PROJECT MASTERS NIGERIA LTD.
C101 ELIOGBOLO VILLAGE OFF
EAST-WEST ROAD RUMUOKORO PORT HAR
COURT
:70:PM PCE-TS 03 001030226
:71A:OUR
Block 5:
{MAC:9F664844}{CHK:60EF6513E579}
Message History =
*Original (Completed)

See in this case as you are dealing with Files and database. you need read the File by using the I/O Streams. if you have to select some particular values you can go Random access file.Once you have retrived values. You can go for the second part that is make a jdbc connection to database, and use simple SQL statements to populate those values into the table.
How this will give you a better picture

File and folder permissions for Adobe Photoshop CS5

Good day,
I am an IT specialist and I work for a Canadian governement agency and we are having an issue with Photoshop CS5. After successfully installing Photoshop CS5 from the Adobe Creative Suite 5 Design Premium set(using a local machine administrator account), Photoshop crashes immidiatly after launching it(even with the local administrator account). The exact error message is as follows:
The instruction at "0x230dad8dc" referenced memory at "0x00000000". The memory could not be "read".
Click on OK to terminate the program
Click on CANCEL to debug the program
I know this is an environement issue and not an application or hardware issue since I was able to successfully install and run Adobe Photoshop CS5 on a plain vanilla install of Windows SP3 XP on the same model of workstation(HP DC7800). This later also confirms it is not a RAM or video adapter issue either. My experience tells me it would be more related to file/folder permissions on the workstation(although I'm open to other suggestions). Because we are a governement agency, our workstations have machine and user policies and desktop configurations that get applied to the workstations automatically upon joining our domain via GPOs and SMS. Certain system files and folder permissions may be locked down for security reasons therefor I was wondering is someone has a list of files and folders that Adobe CS5 needs access to upon startup in order to properly function?
If anyone would like more details or information please let me know and I'll try to be more specific.
Thanks in advance to all who take the time to read and help out!

I appreciate that you're trying to surmise what's different, and it's good that you have had success with similar/identical hardware. At least you know it can work.
However, I wouldn't bet just yet that it's a permissions issue. I'd think you should get a specific error if a locked-down file needed to be accessed, not a null pointer crash. The Photoshop installer should be setting up the proper permissions on its own files for it to run.
Is it exactly the same video card as the other computer, on which Photoshop works?
Are you sure the video drivers are up to date with the same version as on the other computer?
At exactly what point during startup does the failure occur (i.e., is the splash screen showing, and what does the status line in the splash screen say it's doing)?
-Noel

Script for moving files and directory to archive

Hi,
I've search the web for good working script to archive my files and folder with no luck.
do you have a script that move and preserve the structure of older files and folders that have not been accessed for X days?

Hello, I found this quite quickly in the TechNet Gallery. It seems like it would do what you're looking to do.
https://gallery.technet.microsoft.com/Archive-old-files-with-042f859a
# Powershell script - move old files to an archive location.
# Writes log files to $logpath
# Ver 0.6
$path = "C:\TEMP"
$archpath = "D:\TEMP-ARCH"
$days = "30"
$logpath = "C:\Temp"
$date = Get-Date -format yyyyMMddHHmm
write-progress -activity "Archiving Data" -status "Progress:"
If ( -not (Test-Path $archpath)) {ni $archpath -type directory}
Get-Childitem -Path $path -recurse| Where-Object {$_.LastWriteTime -lt (get-date).AddDays(-$days)} |
ForEach { $filename = $_.fullname
try { Move-Item $_.FullName -destination $archpath -force -ErrorAction:SilentlyContinue
"Successfully moved $filename to $archpath" | add-content $logpath\log-$date.txt }
catch { "Error moving $filename: $_ " | add-content $logpath\log-$date.txt }

File and print sharing on windows server 2008

Hi, Now that microsoft have removed the apple compatability oprtion from server 2008 onwards. Does anyone know how to interate Macs onto them?
Primarily this is for sharing files and printing services, but also vpn access etc.
We are new to mac computing and are starting to change over our infrastructure but at the firat attempt we hit this problem. Apple support just say 'we dont support that'
Not good service, so I thought the community would know?
Please help!
New Macbook pro running Mountain lion - Windows 2008 SBS.

Hi, Now that microsoft have removed the apple compatability oprtion from server 2008 onwards. Does anyone know how to interate Macs onto them?
Primarily this is for sharing files and printing services, but also vpn access etc.
We are new to mac computing and are starting to change over our infrastructure but at the firat attempt we hit this problem. Apple support just say 'we dont support that'
Not good service, so I thought the community would know?
Please help!
New Macbook pro running Mountain lion - Windows 2008 SBS.

Get started with file and font sync

Get started with file and font sync how do you access the 700 free fonts?

Have you requested and received an email that you're eligible for File and Font Sync early access?
If you have, go to creative.adobe.com and download the latest version Creative Cloud desktop after you log in with your Adobe ID.
Then when installed, you should be able to click on Fonts to browse on the Typekit website.

Using DFS-R to replicate VHD and VHDX Files

Hello -
I am trying to find a solution to replicate VHD files and VHDX files between two data centers. I'm deploying the solution using Windows Server 2012.
The VHD files are not virtual machines, they are simply storage areas (one for each user) that contain user documents and other files.
The users will potentially log on to terminal servers in two locations and I'd like the VHD files to be accessible from both locations. The VHD files will mount during the logon sequence into a mount point within the users profile (or some other accessible
area within the file system). This is a bit like user profile disks, but more user data disks.
Has anyone attempted the replication of VHD files before using DFS-R, and are there any things I should be aware of?
Will DFS-R support delta replication of VHDs? If a user has a 500 MB presentation, within the VHD file, and changes a single line of text, I'd prefer for only the changed blocks to synchronize.
I don't believe DFS-R supports replicating open files, so I understand that the data won't be in sync until the VHD file us unmounted, but thats okay.
Cheers, I'd welcome any feedback.
Mitch

Hello -
I am trying to find a solution to replicate VHD files and VHDX files between two data centers. I'm deploying the solution using Windows Server 2012.
The VHD files are not virtual machines, they are simply storage areas (one for each user) that contain user documents and other files.
The users will potentially log on to terminal servers in two locations and I'd like the VHD files to be accessible from both locations. The VHD files will mount during the logon sequence into a mount point within the users profile (or some other accessible
area within the file system). This is a bit like user profile disks, but more user data disks.
Has anyone attempted the replication of VHD files before using DFS-R, and are there any things I should be aware of?
Will DFS-R support delta replication of VHDs? If a user has a 500 MB presentation, within the VHD file, and changes a single line of text, I'd prefer for only the changed blocks to synchronize.
I don't believe DFS-R supports replicating open files, so I understand that the data won't be in sync until the VHD file us unmounted, but thats okay.
Cheers, I'd welcome any feedback.
Mitch
If you don't own a pretty fat pipe between the data centres (and it comes free of charge) that's not the best idea. For a reason: DFS-R does use compression only paired with per-file changed block tracker no deduplication see...
http://technet.microsoft.com/en-us/library/cc771058.aspx
...so at the end of the day you'll replicate TONS of non-required information. What you really need to do: deploy a third-party replication solution layered up and working on top of the volume(s) where your VHD/VHDX files are stored.
Will DFS-R work to replicate VHD/VHDX? YES
Is DFS-R optimal for VHD/VHDX replication scenario? NO
Hope this helped :)
StarWind iSCSI SAN & NAS

Read a CSV file and dynamically generate the insert

I have a requirement where there are multiple csv's which needs to be exported to a sql table. So far, I am able to read the csv file and generate the insert statement dynamically for selected columns however, the insert statement when passed as a parameter
to the $cmd.CommandText
does not evaluate the values
How to evaluate the string in powershell
Import-Csv -Path $FileName.FullName | % {
# Insert statement.
$insert = "INSERT INTO $Tablename ($ReqColumns) Values ('"
$valCols='';
$DataCols='';
$lists = $ReqColumns.split(",");
foreach($l in $lists)
$valCols= $valCols + '$($_.'+$l+')'','''
#Generate the values statement
$DataCols=($DataCols+$valCols+')').replace(",')","");
$insertStr =@("INSERT INTO $Tablename ($ReqColumns) Values ('$($DataCols))")
#The above statement generate the following insert statement
#INSERT INTO TMP_APPLE_EXPORT (PRODUCT_ID,QTY_SOLD,QTY_AVAILABLE) Values (' $($_.PRODUCT_ID)','$($_.QTY_SOLD)','$($_.QTY_AVAILABLE)' )
$cmd.CommandText = $insertStr #does not evaluate the values
#If the same statement is passed as below then it execute successfully
#$cmd.CommandText = "INSERT INTO TMP_APL_EXPORT (PRODUCT_ID,QTY_SOLD,QTY_AVAILABLE) Values (' $($_.PRODUCT_ID)','$($_.QTY_SOLD)','$($_.QTY_AVAILABLE)' )"
#Execute Query
$cmd.ExecuteNonQuery() | Out-Null
jyeragi

Hi Jyeragi,
To convert the data to the SQL table format, please try this function out-sql:
out-sql Powershell function - export pipeline contents to a new SQL Server table
If I have any misunderstanding, please let me know.
If you have any feedback on our support, please click here.
Best Regards,
Anna
TechNet Community Support

How can I create an csv/excel file using pl/sql and then sending that file

How can I create an csv/excel file using pl/sql and then sending that file to a clients site using pl/sql?
I know how to create the csv/excel file but I can't figure out how I would get it to the clients site.

968776 wrote:
How can I create an csv/excel file using pl/sql and then sending that file to a clients site using pl/sql?
I know how to create the csv/excel file but I can't figure out how I would get it to the clients site.You are trying to do it at a wrong place..
Whay do you want database (pl/sql) code to do these things?
Anyhow, you may be interested in :
{message:id=9360007}
{message:id=9984244}

Is there a way to select a certain box of elements from a csv file and read that into LabVIEW?

Hello all, I was wondering if there was a way to select only a certain "box" of elements from a .csv file in LabVIEW? I have LabVIEW 2011 and my main goal is to take two arrays and graph them against each other. I can import the .csv file just fine and separate each row and each column to be its own, but say I have an 8X8 but want to graph the middle 4X5 or something like that. Is there any way to extract an array without starting at the beginning and without ending at the end? Thank you in advance.
Solved!
Go to Solution.

Hi Szklanam,
as a CSV file is just a TXT file with a different suffix you can read a certain number of lines of that file. So you can limit the number of rows in your resultung array. To limit the number of columns you still have to use ArraySubset, so maybe it's a lot easier to read the full CSV file and pick the interesting spots with ArraySubset...
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

CSV vhdx files and SAN optimization - sequential or random access or...?

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