Broadly, yes. Continuous replication BC/DR solutions like Azure Site Recovery are one of our recommend approaches for handling DR of self-hosted Laserfiche systems.

That said, you need to very carefully review the specific infrastructure setup you have for compatibility with ASR. Assuming the current system is on-prem, the failover clustering setup complicates things. For example, here is a March 2024 post from a Microsoft employee saying:

I'm sorry to say, Azure Site Recovery does not support replication for Windows Failover cluster. Only standalone on-prem servers are supported by ASR for DR.

Does on-prem windows cluster nodes supported by ASR for replication - Microsoft Q&A

While it's possible that could have changed since then, I couldn't find anything saying on-prem WSFCs were supported today with a quick internet search. The customer may have to choose between having the failover clusters or ASR.

Personally, I'd choose ASR in most scenarios because:

1. Virtualization-level HA can provide most of the same benefits as local Windows Server Failover Clustering with lower complexity
2. The scenarios a continuous replication BCDR solution protects against are generally higher severity and risk and thus higher value to cover than the HA of WSFC, even more so if virtualization-level HA is in place

You also need to think very carefully about how you'll handle replication of all data sources: VMs, any separate file storage, and SQL databases, so that during recovery you can keep everything in sync. Especially the SQL databases: Set up disaster recovery for SQL Server with Azure Site Recovery - Azure Site Recovery | Microsoft Learn

Hope that's helpful.

Best,
Sam