Upgrading from a HPE Nimble Storage CS1000H to a CS3000 involves a disruptive upgrade process, meaning that planned downtime will be required. The disruption occurs because such an upgrade involves significant changes to the storage system, including hardware replacements and potentially data migration, which cannot be performed while the system is online.
Proper planning and scheduling of the downtime are essential to minimize the impact on business operations.
For more details, refer to:
* HPE Nimble Storage Overview