Recovery for NTFS-formatted Windows RAIDs, includes hardware RAIDs and Windows software RAIDs.
RAID Recovery for Windows recovers the entire content of your broken RAID within minutes. This is what I wrote in my earlier post and I am just pasting it back instead of reinventing the wheel!
Risk Log – This document would contain the detail about the risk, affected components, impact on timeline, level of severity, team member(s) responsible for resolving the risk, action needed, cause of the risk, impacted group, impacted work packages, resolution target date etc. Assumptions- This section will list out all the assumptions before the commencement of project and during project execution as you follow through your activities. Issue log – This section is similar to risk log and would contain list of all the issues numbered uniquely and in order they were received along with the impact of the issue, priority,  affected components, team member(s) responsible for resolving the issue, status indicator, actual reported date, projected completion date, dependencies etc. Enter your email address to subscribe to this blog and receive notifications of new posts by email. SQL Server integration Services has been a tool of choice for me since I first ventured into SQL Server 2005 world.
One of the important documents that stand out during project planning is the requirements traceability matrix (RTM). Let’s talk about a popular technology that is changing the way businesses configure, store, manage, distribute and maintain their software as well as hardware systems. The biggest difference between setting up a Software RAID solution as opposed to a Hardware RAID solution is the fact that a Hardware RAID adapter will present the Array as a single drive to the Operating System.
The first step in creating a Software RAID Array is to create partitions that will be part of the array.
In the example I am giving here (see image below), I will create a single partition on every drive that completely fills each drive. Note: When creating software RAID arrays, do not use two Linux RAID partitions from the same disk in one array as this would nullify most of the benefits of using a RAID solution. Once you create all of the Linux RAID Partitions you need, the next step is to actually create the Software RAID Array.
The first step in the RAID Wizard is to select the type of RAID level you want to implement.
The value of the Chunk Size is very dependent on not only the RAID type, but also on the filesystem used on the RAID array.
I’m using RAID-1 schema to make a mirror disk for running system so I prepared 2 disk with same size.


Beside RAID-1 as the above tutorial, we could also applying different RAID type by using similar procedure.
The default chunksize in new versions of mdadm (2009+) is 512K, so one should preferably pick that when it is not already the default in yast.
It supports both, hardware RAIDs managed by the mother board or a controller card, and software RAIDs managed by Windows (dynamic disk arrays). A couple of minutes later, an Explorer-like window will show all recoverable files and folders. It automatically finds all parameters needed for the recovery, such as RAID start sector, stripe size, rotation, and drive order. All risks should be numbered uniquely and in the order of discovery and should be referred by that number throughout the project life cycle. Every project will have assumption such as availability of required data, estimated disk space for database, availability of required software and things of that nature. Entries in the issue log should never be deleted or moved once they are resolved or there is change in status or priority and should have unique id so they can be refereed throughout the project by that id.
Since then SQL Server has evolved dramatically and more features have been added with increased capabilities.
If you see your team falling behind on schedule, you can add more resources to stay on track.
It is the heart of requirements collection phase and is a very effective document for maintaining, tracing and implementing the requirements as the project progresses. There is an inherent shift from mainframe computing to x86 based systems due to performance enhancements and cost effectiveness. A Software RAID solution must have all of it's drives partitioned and configured within the Operating System. This is a little different than a Hardware RAID solution, which uses entire drives for it's arrays.
In a real system, it is common practice to separate out different RAID partitions on each drive. Also, when selecting disks to use for software RAID, if you use ATAPI disks ensure that you only use one disk per controller.
The chunk size is actually the size of the smallest "chunk" of data that you will write to a particular disk. There is not a 100% exact perfect chunk size for every hardware setup and situation, but there are good guidelines to start from.


Just remember that you should applying software RAID while installing system if you wish to make a RAID on your running partition (the partition where openSUSE resides). You may choose different schema (RAID-0 AKA Stripping or RAID-5 AKA Array RAID) but don’t forget to adjust the setting according to your environment. You may also choose Minimal Server Selection (Text Mode) for installing server by click Other on Desktop options. Thankfully, Suse Linux Enterprise Server provides excellent tools to create and maintain a Software RAID solution.
The process of creating these partitions is similar to creating any partition, except you do not format the partition, instead you "identify" the partition as being "0xFD Linux RAID". For instance, do not put 2 disks (one "Master" and one "Slave") on a single controller as this would dramatically reduce the performance of the RAID array (this would also substantially increase the time it would take to rebuild the array). The installation procedure (or the Yast Partition Module if you are doing this after installation) will then start the RAID Wizard. For instance if you have a file of 64kb and the chunk size of the array is 8kb, there will be eight 8kb "chunks" written across the array. A good rule of thumb is to start with 32kb chunks sizes for RAID 0 arrays and 128kb for RAID 5 arrays.
You may make a software RAID on different partition, something like a RAID for data partition, later at any time with YAST partitioner. If you are going to use this RAID array with LVM (Logical Volume Management - which is covered later), then you would select "Do not format" and remove the "Mount Point". With RAID 1 arrays, the chunk size really only pertains to how data is read from the array, so a good start would probably be 4kb. Personally I feel that the dependencies are anyways captured as a part of issues and action items are also listed for mitigation of  risk and issues log. If you are not going to use LVM, you would simply select format type and set the mount point of the array. So it would make more sense to use the categories – Risk, Assumptions, Issues and Decisions. Remember these are only starting points, to fine tune your setup you really should test different sizes to find what is optimal for your configuration.



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