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Category: Migrations

Find and Replace Formulas in SharePoint Calculated Columns

Find and Replace Formulas in SharePoint Calculated Columns

Something often overlooked during migrations are calculated fields in SharePoint Lists. In lots of tools available, the value of a calculated field migrates correctly from one environment to the next. The problem though, is in one environment this formula may have pointed to a URL or static asset as part of the formula. After this column is migrated the formula is technically correct, just inaccurate in the new SharePoint environment.

Following a migration from SharePoint 2007 to SharePoint 2013, my colleague was looking for a way to update formulas across SharePoint sites which had references to the old domain. He essentially needed a “Find and Replace” function for columns in SharePoint. Now this is not probably the smartest or the best solution to this problem, it is however, a solution.

Powershell Function:

And voila, you have a simple way to find and replace any text value inside of a SharePoint list. While I have only tested this with SharePoint 2013, it should work in SharePoint 2010 and SharePoint 2016 if that’s your thing.

Feel free to post questions or feedback on this article, and improvements if I have botched anything.

How Much Does a SharePoint High Speed Migration Cost?

How Much Does a SharePoint High Speed Migration Cost?

In a previous post, I conducted a terabyte migration to SharePoint Online. The premise was to discovery how fast you can perform a migration to SharePoint Online from a file share, or on premises data source. A byproduct of this migration though, is that it gave me a general idea of what a migration will entail when it comes to costs. I waited till the end of the billing cycle to see how much the storage, network, and transactional costs would be for the overall migration. One of these costs definitely surprised me…

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SharePoint Online: High Speed Migration Resources

SharePoint Online: High Speed Migration Resources

Please find a growing list of resources below, which I will update as information gets released about the Import Service for SharePoint Online. [Please click through to see the tables link]

Resources - Microsoft Articles

List of Microsoft Articles about High Speed Migration
TitleUpdatedLink
SharePoint Online and OneDrive Migration Content RoadmapAug 7th, 2015https://technet.microsoft.com/en-us/library/mt203955.aspx
SharePoint Online and OneDrive Migration User GuideDec 11th, 2015https://technet.microsoft.com/en-us/library/mt203923.aspx
Import SharePoint Data to Office 365Apr 4th, 2016https://technet.microsoft.com/library/mt210445.aspx
SharePoint Online Migration API User Guiden.d.https://support.office.com/en-us/article/SharePoint-Online-Migration-API-User-Guide-555049c6-15ef-45a6-9a1f-a1ef673b867c?ui=en-US&rs=en-US&ad=US

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How fast can you go: Migrating to SharePoint Online with the High Speed Migration service

How fast can you go: Migrating to SharePoint Online with the High Speed Migration service

Last week I was researching throttling and performance issues for SharePoint Online migrations for a customer, which lead me to investigate if there were any updates to the High Speed Migration feature in Office 365. Since my last tests demonstrated that with parallelization is the way to maximize the performance of an Office 365 Migration, really though any migration benefits from this concept. What has changed since last summer is that now all Office 365 subscriptions now benefit from a baseline 1 Terabyte of storage plus the individual allotments per user.  Looking to take advantage of the latest storage increase, I thought it would be suitable to test performance with a larger dataset. So that is how arrived at the 1TB Migration to SharePoint Online.

The methods I am using, haven’t changed since my last post about the parallel migration scripts, so I will not cover them here. Instead I’ll talk about the data I am using and the actual performance observed during the migration.

Where am I going to find 1TB of Documents?
This is the first question I asked myself, which lead me to explore available datasets to see if any would fit. For a moment I actually thought about converting the entire Wikipedia library to word format and uploading it to SharePoint Online. Since I’m not testing the readability of documents, Just the performance speed, I decided to leverage the same method I used before which generates large amount of “fake” documents. I still have Mikael Svenson (@mikaelsvenson) to thank for that little tool. It took me a full day to generate & copy 1TB of documents in my Azure VM, and eventually I filled up my data drive.

With 401k files across 95 Folders.

Each folder has just over 10GB of content with lots and lots of documents ranging from 1MB to 5MB. For this test, I chose to treat each folder as its own migration job and submit them independently at the same time.

I ran the packaging script which gave me a lot of CSV files which contain the upload details for each of the Migration Jobs. At this point I have all the files uploaded to azure, all the links with permissions to the different containers, all I need to do is submit the job to the Migration Service.

Which is what I did.

What did I expect?

At this point I started checking my SharePoint site to see how quickly the jobs would run against the server. I thought based on my previous tests that I would see a few jobs processing some of the data, each job performing on average the same as I could do with a 3rd party tool, just a bit better on the backend with the multi threading.

I was very wrong…

The import service ran an incredible 33 Parallel jobs against the same SharePoint Site Collection, the same folder really in the same document Library. This vastly exceeded my expectations of between 5-10 parallel jobs depending on the farm health.

AT my first checkpoint,  I migrated almost 80GB of data in one hour… That’s about 80 x my experience using CSOM with one thread. That speed is incredible for an on premises migration let alone a cloud migration. In the end I migrated 788GB of content in just over 16 hours.

Start4/1/2016 4:40AM
End4/1/2016 8:58 PM
Duration16h 13m
Volume788 GB
Speed48.3 GB/Hour

Takeaways

The SharePoint Online High Speed Migration Service is super fast. If you maximized your jobs by dispersing them across sites & libraries, you could migrate 2TB per day. Towards the ends of the test, performance dropped since there weren’t as many jobs running at the same time, and there were some errors during the migration. Several of the folders were missing content however, that’s likely due to the way i configured my packages. I had too many document per package and the service stops after 100 errors per job. I will try this again with some 3rd party tools to make sure the data has full fidelity.

This service is ready for prime time where throughput is concerned, speed will no longer be a limiting factor for SharePoint Online Migrations.

Office 365 High Speed Migration Quick Start Chart

Office 365 High Speed Migration Quick Start Chart

Get migrating to Office 365 quicker using the quick start chart below.

Also available in PDF form with links to the relevant information.

Quick Start Chart for Migration

office 365 migration decision tree