Sequence Container And Checkpoints
Mar 6, 2008
hi people, i have crashed on a this problem. I have a sequence container and on this container I have set "FailPackageOnFailure=true". Now in this container there are 2 tasks. The first one is preceeding the second one. Now both this task have set "FailParentOnFailure=true". Both task are the same and their purpose is to drop table A.
1) I run the package and it fails, because there is no table to drop.
2) I create the table manualy and run package again.
3) I see, that the first task is beeing just SIMPLE OMMITED and the second task runs
In general, everytime any task in a sequence container invokes failure, next time is beeing ommited regardelss of its status. How can this be fixed ? Thanks
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Sep 21, 2015
I have a sequence container in my Package and this sequence has more than one control flow tasks.
Can I create the checkpoints such that only the failed component inside the sequence container runs again and not the other successful components/tasks in the sequence container?
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Jul 25, 2007
Has anyone ever seen this issue?
If i place a loop container inside a sequence container the connectors within the loop container disappear.... is this a bug - will the loop tasks still run in the correct order?? or will they fire off willy nilly??
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Apr 26, 2006
i am trying to insert data into a table and roll back if this fails. What i have done is created an Execute SQL task with a SQL statement of BEGIN TRANS .. if the constraint = success then it goes to a Sequence Conatiner that amoungst other thing includes an Execute SQl task that does INSERT statement . outsied of the container i have 2 execute sql tasks that to a COMMIT TRANS ond a ROLLBACK Trans . when executing it i get an error the Rollback Transaction request has no corrasponding Begin tranaction. I have seen this in a SSIS created by one of the Wizards and it works fine, im oviously missing something fundemental .. any pointers ?
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Feb 16, 2007
I am attempting to open up my ssis integration project but when I try to open up packages it says @ the bottom "Validating Sequence Container" and it just stays there. I cannot click on anything and nothing is responsive. Does anyone know why this is happening?
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Oct 4, 2006
I have a package that is going to have roughly 20 sequence containers in it. Each of these containers is going to have the same start task and the same end task. The data flow task(s) in each sequence container will differ. So I was thinking I would create a custom sequence container that would implement the common steps I need in each of my containers. I started to create a task that would inherit from Sequence, but I found that it is sealed. Bummer.
What is involved in creating a sequence task by inheriting from Task? I see that Sequence implements IDtsSequence. But looking at this interface, it seems like I would have to build the logic to execute the workflow contained in my sequence.
Any pointers?
-Darrell
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Nov 8, 2006
I have a package that contains multiple SEQUENCE CONTAINERS,
each execute a bunch of tasks. I try to use the script task to dynamically
disable or enable each of these SEQUENCE CONTAINERS base on parameters that pass
in from parent package, but for some reason, I can€™t set the disable value to
True/False at runtime. Anyone knows how to do this?
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Sep 21, 2006
Hi everyone,
Our VB application throws .dtsx on-demand by using Threads. Everything's fine but a little detail:
when it goes to launch a SSIS package with a only task, concretely a Sequence Container task (empty, without tasks inside) fails Prevalidate method.
Attach you the snippet of code:
pkgResults = pkg.Validate(Nothing, Nothing, EventsSSIS, Nothing) -- pkgResults returns me Failure {1}
If pkgResults = DTSExecResult.Success Then
..
..
Validate method, as usual, do EVENTSSSIS.PreValidate event and after that, returns instead of follow raising events.
Perhaps it's mandatory to set one task as a minimum, I don't get the point at all
Any guidance or thought will be welcomed,
Thanks in advance and regards,
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Jan 10, 2008
I am working with SSIS and use Sequence Conatiners extensively. I have become frustrated enought to stop what I am doing and create this thread in the MSDN SSIS forum.
When working with expanded container objects, constraint objects connecting control objects not in the container can be seen. The control object is hidden (sent ot back) but the constraint objects remain visible (sent to front.)
This is extremely frustrating as the unwanted constraint object can be interacted with and not only interfers with the visual presentation during design, it also allows for unintended changes.
I have implemented SSIS upgrades from MDSN but either haven't implemented the appropriate upgrade or an upgrade doesn't exist for this.
Are there any suggestins or comments that can help me get my sanity back?
Yours,
srankin1957
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May 17, 2007
Hi,
I have a sequence container that contains a bunch of tasks.
I have a failure constraint that goes from the sequence container to execute sql task. The execute sql task then sends out an email upon a failure of the container, which is triggered by the failure of any given task inside the container.
My question is, is there a way to pass a SPECIFIC error message to the execute sql task?? That is, if one of the components inside the sequence container fails, I would like the email message to reflect the error message of that particular component, not just that the container failed, as there are different levels of severity of errors, depending on which component failed.
Thanks much
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May 16, 2015
I have (6) sequence containers, each with a data flow task and script task. The script task renames the file and the data flow uses an OLE DB Source connection to export to a flat file using the Flat File Destination connection.For sI have been unable to move from the 1st sequence container to the 2nd (and the next and so on...). I am trying to do this "on success" (on failure I generate an email notification within each container), but am apparently missing a piece to this because after the sequence container executes, which it does successfully, nothing happens.
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Nov 28, 2005
I am creating a staging database in which I am loading required tables from 2 different sources.
I have 30 different tables to load from source 1 and 10 different tables from source 2.
This is the way I am doing, in Control flow task I am using Sequence container and in that I included the data flow task, the data flow task
has source OLD DB connection from where I select the table and then destination OLE DB connection where I load the data.
So for 30 tables I have one Sequence container with 30 different data flow task and each data flow task has OLE DB source and OLD DB destination.
I wanted to find out if this is the efficient way to do, or if there is any other way to do this.
And for source 2 shall I put in another package or shall I use the same package with different sequence container and follow the same steps
as for Source 1 tables.
Please advice.
Thanks,
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Jan 26, 2006
I have a Sequence Container with an Exec SQL Task in it. I can't delete the task or the container. I can't disable them.
Here's how I got there:
I put a Dataflow Task and the Exec SQL Task in the container, then set a precedence constraint. Lots of complaints moving either of them. Managed to delete the Dataflow Task, but now can't do anything.
Any dieas?
Laurence
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Sep 21, 2015
I have an SSIS package that is pretty simple.
An Execute SQL task returns one row with two values that are correctly stored into variables.
Based off those two variables, a sequence container is chosen to execute.
That sequence container then does magic. The last step of the container has an execute SQL task that runs and stores the result in a variable - let's call this[User::result] with type Int32.
Based off the value in [User::result] one of two final tasks run. A non zero value executes one task; a zero value executes another. Basically,SOMETHING runs after this.
Simple? I thought so... except Step 4 doesn't work. If I set a post-execute breakpoint on the sequence container, the variables are populated as expected, but nothing else runs. If I add another task to run (without a conditional expression) to run after the sequence container completes, the pre-execute breakpoint shows the data looking exactly as I expect.
Those script tasks are just MessageBox.Show calls and the expression, as you can see, doesn't use variables at all.
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Aug 19, 2015
I have a sequence container with 2 task into. If one of the tasks alert a failure then the sequence container should alert a failure too, but it doesn't. For testing I forced the error with setting the attribute ForceExecutionResult to Failure for one of the tasks. The task fails, but the sequence container succeeds.
I tried:
- changed the Precedence Constraints from AND to OR between the 2 tasks into the sequence container
- changed the attribute FailPackageOnFailure setting True
- changed the attribute FailParentOnFailure setting True
but nothing happened.
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Jun 1, 2006
I've created an SSIS package that contains a Sequence Container with TransactionOption = Required. Within the container, there are a number of Execute Package Task components running in a serial fashion which are responsible for performing "Upserts" to dimension and fact tables on our production server. The destination db configuration is loaded into each of these packages using an XML configuration file. The structure of these "Upsert" packages are nearly identical, while some execute correctly and others fail. Those that fail all provide the same error messages.
These messages appear during Pre-Execute
[Insert new dimension record [1627]] Error: The AcquireConnection method call to the connection manager "DW" failed with error code 0xC0202009.
[DTS.Pipeline] Error: component "Insert new dimension record" (1627) failed the pre-execute phase and returned error code 0xC020801C.
... which are followed by
[Connection manager "DW"] Error: The SSIS Runtime has failed to enlist the OLE DB connection in a distributed transaction with error 0x8004D00A "Unable to enlist in the transaction.".
[Connection manager "DW"] Error: An OLE DB error has occurred. Error code: 0x8004D00A.
While still in debug mode, I can check the properties of the "DW" connection and successfully test the connection within the packages that fail.
The same packages run successfully when tested outside the container (i.e. no transaction) or when the configuration file is modified to point the "DW" connection to a development version of the db which is running on the same server as the source database.
I have successfully used DTCtester to verify that transactions from source to destination server are working correctly. Also tried setting DelayValidation = True with no change. I have opened a case with Microsoft and am awaiting a reply so I thought I'd throw a post out here to see if anyone else has encountered this and might have a resolution. Here's some more on the environment:
Source Server:
Windows Server 2003 Enterprise Edition SP1
SQL Server 2005 Enterprise Edition SP0
Destination Server:
Windows Server 2003 Enterprise Edition SP1
SQL Server 2000 Enterprise Edition SP3 (clustered)
Thank you in advance for any feedback you might be able to provide.
KS
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Mar 3, 2008
I want to use a checkpoint in an SSIS package and would require some help.
I have a scenario like this
Task A ------ Task B-----------Task C
------- Task B1
Task A has a precedence constraint which determines if either Task B or Task B1 runs. Task B is run if the condition is met and Task B1 if the condition is not met.
I would like Task B1 to be a script task that is used to fail Task A so that when the package is restarted it will start from task A based on the checkpoint.
Is there any way to do this ?
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Jun 14, 2007
I have a package that has 4 Script Tasks that are placed sequentially.
I have Task1--> Task2-->Task3-->Task4
The arrows between them are OnCompletion Arrows as opposed to the Standard OnSuccess arrows.Even if Task2 failed, it would still execute 3 and 4
the catch is that i want it such that when i run the first time and task 2 fails, then all the tasks except task2 should run which is fine, but when i rerun it. I want it such that it realises that task 2 had failed earlier, so it runs just task2.... if both 2 and 4 had failed then it should just run 2 and 4
i tired to implement it with check points, but the problemn is that if it fails at task2 it stops at task2 and does not continue to execute tasks 3 &4... when u rerun it starts at 2 but like i said i would like 3 & 4 to have completed the previous run...
Any suggestions would be helpful
Thanks for any help in advance..
smathew
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Dec 4, 2006
I have a package that uses ssis checkpoints. It works well. However, when I try to setup transactions for some task, the chekpoints aren't used.
I read BOL and It states:
"If a package is configured to use checkpoints, Integration Services captures the restart point in the checkpoint file. The type of container that fails and the implementation of features such as transactions affect the restart point that is recorded in the checkpoint file."
But, how checkpoints are affected by transactions? what relation exists between this two components?
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Jan 17, 2006
I am building a set of packages to load different things, some of which have relationships with the others. Therefore I want them loaded in a certain order. I have built a main package that executes the set of packages to control the flow of the packages.
Now, I want to implement checkpoints. Ultimately, I only want to deal with the main package that controls everything. So I figure the main package needs checkpoints enabled. When packages are nested and checkpoints are on at the top level package, will the nested package(s) start at the control flow point of failure or will it run the entire nested package? Should checkpoints be implemented within the nested packages as well? Should checkpoints only be implemented within the nested packages? Again, remember that I only want to launch
estart the main package.
Thanks. Any insight would be appreciated.
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May 26, 2007
Hello everyone, I had been studying the relationship between SSIS Checkpoints and SSIS Transactions.
What I want to do is to create a package with different task, where each one task creates a new transaction, and the same time each task be a checkpoint, it€™s in order to restarts the package from the failure task not from the beginning.
The Transaction-Checkpoint solution contains two packages*:
CkeckpointsAndTransactions1.dtsx and CkeckpointsAndTransactions2.dtsx
Package CkeckpointsAndTransactions1 contains four tasks, task three always fail. The package is configured to use checkpoints and each individual task creates a checkpoint. Additionally, each task creates a new transaction. The package has the TransactionOption setting to NoSupported.
In the CkeckpointsAndTransactions1 package there is something wrong, when the third task fails and I restart the package, the package starts from the beginning, this is wrong!!, the package should restart from the failure task.
In order to the package works like is expected it€™s necessary to add a new task between second and third task. It is also necessary that this new task hasn€™t transaction support. This is shown in the CkeckpointsAndTransactions2 package, in this package after package failure, I restart the package and the package restarts from the failure task, like is expected, but the additional task should not be necessary!!
Does anyone what is wrong in my packages?? How can I to create a package with different task, where each task creates a new transaction, and the same time each task be a checkpoint?
*Please download the BIDS solution from hernan93.files-upload.com (Transaction-Checkpoint.zip file)
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Aug 23, 2007
Hi there,
I am trying here to get a situation going which includes both transactions and checkpoints to make sure that when something goes wrong I don't get a) data corruption (hence the transactions and b) I don't have to completely restart my 2hr run (hence the checkpoints). However I ran into something of which i cannot see whether it is intended behaviour or simply a bug.
Here's the deal:
I have a SSIS-package in which I enable checkpoints (CheckpointUsage: IfExists and SaveCheckpoints: True).
I have 2 Dataflows which follow eachother (the first dataflow prepares data for the second dataflow to edit).
Because I want to make sure that my data is secure I put a separate transaction on both the dataflows.
And here my problem arises. If I run my package now and the second dataflow breaks then my checkpoint sends me back to the first dataflow and my initial insert is executed again, which isn't meant to happen (I enabled checkpoints to prevent rerunning items). Somehow my checkpoint does not register the fact that the first dataflow has already been executed and it will execute that one again upon rerun.
However: if I put a random task between the 2 transacted dataflows (for example an empty script-task) it will work as intended. Just as long as this inserted item doesnt have a transaction; because if it does then the problem comes back
Now if I execute the package then my checkpoint shows that the first dataflow has already been executed and thus it will not execute this one again and it starts at the second dataflow upon re-execution.
I can work around it (with the empty script-task) but still I am wondering as to why this is happening. I am very interested to hear whether this is really a bug or if it is intended behaviour (and if it is then why is it intended?)
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Jul 16, 2007
Hi,
I am using check point in my packages , but i am not able to run my packages where it exactly got failed. The scenario is i am 100 rows at source system and i was loaded 95 records into target and due to the some data formatting issues i got failed at the 96th record. Later i am trying to re-execute the package, Surprisingly my package start run from the 1 st record(nothing but the start point of dataflow task).
How can i achive to run from where it excatly got failed(96th record) ?? is it possible using check points else is there any work-around approach ??please respond this post , it is very helpfull for me..
TQ
Sreenivas
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May 2, 2007
I have a package that has a container containing multiple DF Tasks.
The container is set to be Transacted, such that should any of the DF tasks fail the data inserted in any of the previous tasks rolls back.
This works as expected.
However, this container is part of a larger package and so I wanted to have a checkpoint on it, so that should any of the tasks within it fail, the package could be restarted from this container.
However, I would expect the functionality to be that on failure, the checkpoint would cause the whole container to be started again (because the container is transacted all DF task info would be rolled back) so we would expect it to start at task 1 again.
This is not the functionality I see. The package restarts from the failed task within the container every time.
According to the book Prof SSIS, it should start again from the first task and as explained this makes sense on a Transacted container as you would want this to happen.
A previous forum message encountered the same issue it appears:
See SSIS Checkpoints 04 Dec 2006.
This is an extract from it:
"I only experimented a little but my experience was that when I have a transacted container with multiple tasks that are checkpointed, SSIS would try to restart from the task that failed rather than from the first task in the container. The transaction was being rolled back correctly though.
In short, I felt that check points were not aware of transactions.
So, I ended up with this setting and it works for me:
Container is checkpointed and trasacted.
Tasks within the container are not checkpointed.
'FailParentOnFailure' property set to True on the tasks.
That way, if a task failed, it would fail the container and a checkpoint would be created at that level. Transaction would be rolled back as usual."
While this makes sense to me it is not the same properties that the SSIS book has that work.
Additionally, this didn't work for me either !!
I have tried every combination of FailPackageOnProperty and FailParentOnProperty that makes sense but every time the package restarts from the failed container within the task.
The transaction is rolled back correctly every time, but it seems the checkpoint that is created is not used correctly when dealing with transactions within containers.
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Oct 14, 2006
Hi,
We are currently facing an issue in ensuring restartability of an SSIS package. The scenario is explained below.
Context:
The SSIS Package has two Data Flow tasks. The Data Flow task named DFT1 is the predecessor for DFT2 and chained with OnSuccess precedence constraint.
OnPreExecute and OnPostExecute event handlers have been implemented for DFT1. Each task in both event handlers as well as DFT1 and DFT2 have FailPackageOnFailure set to True.
Scenario1: Task in OnPreExecute of DFT1 fails.
DFT1 is attempted and succeeded.
OnPostExecute of DFT1 was not attempted.
DFT2 was not attempted.
Checkpoint file was created; however, no entries were made.
When restarted, execution started from first step in Control flow.
Scenario2: Task in OnPostExecute of DFT1 fails.
DFT1 and its OnPreExecute Event were executed.
DFT2 was not attempted.
Checkpoint file was created and entries were made. Entries had DTS:result as 0 for OnPreExecute and DFT1 tasks.
When restarted, DFT2 was executed. OnPostExecute event, which failed during previous execution, was not attempted.
Each task in the package, whether it is in Control flow or as part of an event handler is crucial for seamless execution. But apparently, as explained above, there is no reliability on the event handlers in case of failures. Has anyone encountered similar scenario? Is this behavior as per design of the runtime engine?
Thanks, in advance,
Regards,
Rajesh
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Oct 24, 2006
Hi,
I have a master package with a sequence container with around 10 execute package tasks (for child packages), all in parallel. Checkpoints has been enabled in the master package. For the execute package tasks FailParentOnFailure is set to true and for the sequence container FailPackageOnFailure is set to true.
The problem i am facing is as follows. One of the parallel tasks fails and at the time of failure some of the parallel tasks (say set S1) are completed succesfully and few are still in execution (say set S2) which eventually complete successfully. The container fails after all the tasks complete execution and fails the package. When the package is restarted the task which failed is not executed, but the tasks in set S2 are executed.
If FailPackageOnFailure is set to true and whatever be the FailParentOnFailure value for the execute package task, in case of restart the failed package is executed but the tasks in set S2 are also executed.
Please let me know if there is any setting that only the failed task executes on restart.
Thanks in advance
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Feb 13, 2007
Hi,
I have a FTP task in my control flow that download files from a FTP server. This ftp task is inside a foreach container that loops over a ADO recordset for the file name. The files that the ftp task pulls are huge. If the FTP task fails then I want the FTP task to restart and only download those files that have not been downloaded. Is this possible?
What possible configurations do I have to make to the foreach container and the filetask?
Thanks a lot in advance for your help and time.
Regards,
$wapnil
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Apr 18, 2008
I have an execute sql task that uses the following query: (modified for this thread but normally its going to return all records in the table)
Code Snippet
SELECT
'PrimaryID' AS 'Parameter/name',
PrimaryID AS 'Parameter/value',
'LastName' AS 'Parameter/name',
LastName AS 'Parameter/value'
FROM ParkingUpload
WHERE primaryid = '1234' or primaryid = '4321'
FOR XML PATH('T2Method')
The output of this query looks like this: (I know normally this would be a bad xml file, but its needed for my purpose)
Code Snippet
<T2Method>
<Parameter>
<name>PrimaryID</name>
<value>1234</value>
<name>LastName</name>
<value>Abiola</value>
</Parameter>
</T2Method>
<T2Method>
<Parameter>
<name>PrimaryID</name>
<value>4321</value>
<name>LastName</name>
<value>Aboud</value>
</Parameter>
</T2Method>
That xml is stored in a user variable in the Execute SQL Task. I need to take that user variable and send out that xml to a webservice. The web service is expecting one record at a time(a new record is defined by the <T2Method> node.
So question is, does my approach seem fine so far? I was wondering if my next step should be to put this variable in a For Each Container and send out one record at a time to the webservice. If so, how would I go about doing that?
If anyone else has a different suggestion as how to approach this, or be able to help with the For Each portion (I am brand new to SSIS), I would really appreciate it.
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Jan 22, 2008
Hello Experts,
Sorry that I open a new thread again but I didn€™t found any good tutorials about foreach loop container. I would like to read every row from one table and do something.
I red something about sql task€¦ Can someone give a little instruction, please?
Kind regards,
Alex
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Jul 31, 2007
Hi,
I'm using data flow as flat file source -> derived column ->Data Conversion-> oledb destination
I have a fifty thousand record in a delimited file. while processing i got error in 45000th row. In database only 40000 records are there(why is there no all 45000 records). Is there any way to roll back all the 40000 records.
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Feb 15, 2007
Hi
I using data flow task to import from flat file to database but i need to use Foreach Loop Container to import multiple files in specific folder and all will be insert in the same table
tahnks & Regards
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Feb 27, 2006
What I'm trying to do is take multiple "snapshots" of a membership for many months. I was trying to do this in a For Loop Container in which I added one to the month variable and subtracted one from an iteration variable each loop, unless the month variable = 13...then I would add one to the year variable, set the month variable to 1 and subtract one from the iteration variable. This, I was hoping, would allow me to initialize 24 to the iteration variable, 1 to the month variable and 2004 to the year variable, kick off the package, and get 2 years worth of "snapshots" in seperate files (one for each month). Here is the AssignExpression I thought would work:
@Member_Month == 13 ? @Member_Month = 1 && @Member_Year= @Member_Year + 1 && @Member_Iteration = @Member_Iteration - 1 : @Member_Month = @Member_Month + 1 && @Member_Iteration = @Member_Iteration - 1
The package states that the single "=" should be double, but I don't think that that is what I want to do (I tried doing this just to check, and it didn't like this either). I think that it is having problems with doing multiple things on both sides of the ":". What am I doing wrong?
Thanks,
Brian Layden
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Oct 19, 2007
Afternoon Folk ...
Here is the question.
I have a RAID 10 container consisting of 4 146GB, SAS, 3.5-inch 15K RPM Hard Drives.
We have the OS on its own RAID so we are strictly dealing with setting up SQL Server 2005 on the RAID 10.
SO ... is it better to create seperate volumes for the Data, TLog and TempDB file placements (i,e, C:, F: and G or is it alright to create just plain-jane folders for the file placements?
Does it make a difference?
Is there a better way to carve this RAID 10 up?
Thanks ALL!
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