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

The HPE Alletra 9000 NVMe-oF 100 GbE 2-port host bus adapter (HBA) is a versatile component that can be used for multiple purposes. While it is primarily designed for high-speed host connectivity, it can also be used for connecting extra drive enclosures to the HPE Alletra 9000 storage array. This flexibility allows it to serve dual roles depending on the specific requirements of the deployment, either expanding storage capacity by connecting additional enclosures or providing high-speed connectivity to hosts.
Reference:
HPE Alletra 9000 Overview
HPE NVMe-oF Solutions

The HPE 3PAR StoreServ Persistent Port feature ensures transparent and uninterrupted failover during specific events such as firmware upgrades and node maintenance or failure. During a firmware upgrade, the persistent port feature allows data paths to automatically fail over to an alternate path, maintaining uninterrupted host connectivity. Similarly, in the event of node maintenance or failure, the persistent port feature seamlessly redirects I/O to another available node without disrupting the service, ensuring high availability and reliability.
References:
* HPE 3PAR StoreServ All-Flash Arrays
* HPE Storage Solutions