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Migrator for Notes to Exchange 4.17 - Administration Guide

About the Migrator for Notes to Exchange documentation Notes Migration Manager NABS Discovery Wizard Internet Domains Discovery Wizard Directory Export Wizard Collection Wizard Groups Provisioning Wizard Notes Data Locator Wizard Provisioning Wizard Send PAB Replicator Wizard Data Migration Wizard SSDM Statistics Collection Wizard The Log Viewer Using the Qsched.exe task-scheduling utility SSDM Scheduling Administration utility Microsoft 365 Admin Account Pool utility PowerShell cmdlets for Migrator for Notes to Exchange Appendix A: How do I ...?
Post-installation configuration Pre-migration preparations Batch-migration process Other features

Microsoft 365 Admin Account Pool utility

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About the Admin Account Pool utility
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Necessary preparations for the Admin Account Pooling utility
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Managing the Admin Account Pool

About the Admin Account Pool utility

Microsoft currently imposes various throttles in Microsoft 365 to ensure service availability and performance for all tenants. Some of these throttles take effect when any account (including a migration administrator account) initiates more than two concurrent connections. Each migration thread counts as a connection, so throttling can have a dramatic impact on migration performance to Microsoft 365.

Migration solutions commonly achieve optimal throughput with eight to 12 threads for migration to local targets, and potentially more threads for higher-end hardware. To achieve similar results to Microsoft 365, separate migration administrator accounts must be used to bypass the throttling limitations.

 
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NOTE: When running Migrator for Notes to Exchange in a federated Microsoft 365 environment, the Account Pool Utility cannot use a federated domain.

Since Microsoft’s throttling is applied per administrator account, Migrator for Notes to Exchange runs multiple administrator accounts simultaneously on separate machines, each set to migrate with only one thread at a time. The net throughput becomes a function of the sum of all these multiple accounts’ processing threads—one per administrator account.

Migrator for Notes to Exchange includes an Admin Account Pool utility that helps you manage a pool of Microsoft 365 administrator accounts for this purpose. The utility is designed to help you coordinate and "choreograph" these administrator accounts.

 
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NOTE: To maximize the performance of concurrent migration threads, ensure the size of the pool is greater than or equal to the total number of threads across all migration servers.

Licensing Microsoft 365 accounts for the Admin Account Pooling utility

Before March 2015, Microsoft 365 accounts used for the Migrator for Notes to Exchange Admin Account Pooling utility were typically unlicensed. However, some customers began receiving connectivity errors when connecting to Microsoft 365 with those accounts. These customers reported that licensing the Admin Pool users resolved the connectivity errors, so with this feature Migrator for Notes to Exchange can automatically license these accounts (if required), and subsequently unlicense them when the migration is complete.

Microsoft Microsoft 365 licenses are transferable, so they can be reassigned after they are dissociated from the Admin Account Pooling accounts. Note that this dissociation also deletes any Microsoft 365 mailbox that may have been created for the account, but admin accounts created for this purpose typically do not need or use Microsoft 365 mailboxes.

This licensing/unlicensing feature is explained in the section titled Managing the Admin Account Pool.

Necessary preparations for the Admin Account Pooling utility

A few simple preparations are necessary before you can use the Admin Account Pooling utility.

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Before you use the Admin Account Pool for the first time
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For each MNE task you want to schedule
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