> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cognigy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Upgrade and Migration Guides

> Index of Cognigy upgrade and migration guides, covering MongoDB, Redis HA, Kustomize to Helm, EFS CSI, Azure CSI, NLU V2, and Weaviate upgrades.

* [MongoDB: Single to Multi Replica](/ai/administer/installation/migration/single-replica-mongoDB-to-multi-replica-mongoDB-migration)
* [Kustomize to Helm](/ai/administer/installation/migration/kustomize-to-helm-migration)
* [Amazon EFS Provisioner to EFS CSI](/ai/administer/installation/migration/efs-provisioner-to-efs-csi-migration)
* [Azure File Provisioner to Azure CSI](/ai/administer/installation/migration/azure-file-to-azure-csi-migration)
* [Cognigy NLU: from V1 to V2](/ai/administer/installation/migration/from-nlu-v1-to-v2-migration)
* [Redis: Single Replica to Redis HA Migration](/ai/administer/installation/migration/single-replica-redis-to-redis-ha-migration)
* [Weaviate Upgrade to v1.22.5](/ai/administer/installation/migration/weaviate-upgrade-to-1.22.5)
* [Weaviate to Qdrant](/ai/administer/installation/migration/from-weaviate-to-qdrant)
* [Network File Systems](/ai/administer/installation/migration/nfs-migration)
* [Migrate Extensions Tenant Storage](/ai/administer/installation/migration/extensions-tenant-storage-migration)