OceanStor Dorado all-flash arrays provide the high performance and low latency required for transactional databases. HyperMetro’s active-active, synchronous replication ensures an RPO of 0 (zero data loss) and an RTO near zero by allowing immediate failover to the secondary site, which is continuously updated. This is the only option that guarantees both zero data loss and instantaneous recovery.

Global deduplication and compression, especially when performed at the source (client side), dramatically reduces the size of backup data. This minimizes the load on the network during backup transfers and reduces the required storage capacity on the backup target. This is the most effective method for controlling backup windows in the face of data growth.

Installing OceanStor UltraPath *before* the host scans and discovers the storage LUNs is critical. If the OS discovers the devices first, it will load its native multipathing driver (like DM-MPIO in Linux). Installing UltraPath afterward can lead to driver conflicts, unstable I/O paths, or failure to manage the paths correctly. The correct sequence ensures UltraPath manages the devices from the outset.

Intelligent Data Migration (IDM) is the core tiering mechanism in a hybrid pool. It continuously monitors data access patterns (heat). Frequently accessed ‘hot’ data is promoted to the faster SSD tier for performance, while less frequently accessed ‘cold’ data is demoted to the larger, more economical HDD tier. This optimizes both performance and cost automatically.

To properly integrate with vSphere for shared storage features, the Huawei array must present LUNs with the host type explicitly set to ‘VMware’. This configuration enables VAAI (vStorage APIs for Array Integration) primitives, which offload tasks like cloning and zeroing to the storage array, and ensures optimal multipathing using the VMware-native SATP/PSP rules. While NFS is also valid, the question specifies presenting as a ‘datastore’, which is common for both block (FC/iSCSI) and file (NFS) protocols.

Storage cache is most effective for random, small-block I/O. If the application’s I/O pattern changes to large, sequential operations (like video streaming, backups, or large file transfers), the system may intelligently bypass the cache (cache bypass) as it’s less beneficial and can even pollute the cache. Analyzing the I/O pattern is the crucial first diagnostic step before making any configuration changes.

The fundamental difference is writability. A snapshot is a point-in-time, read-only copy of a source LUN. It is space-efficient (using copy-on-write). A clone is a full, writable copy of a LUN created from a snapshot. It is immediately available for read and write operations, making it suitable for tasks like testing, development, or data analysis without affecting the source data.

Asynchronous replication is the correct choice. It does not require the primary site to wait for confirmation from the secondary site before acknowledging writes to the host, making it suitable for longer distances and limited bandwidth. It allows for a non-zero RPO (some data loss is acceptable). After failover, the secondary site has a recent copy of the data and can operate independently. Synchronous and HyperMetro require low latency/high bandwidth and aim for RPO=0, which is overkill and costly for this scenario.

A Storage Pool is a collection of physical disks organized with a specific RAID policy (e.g., RAID 5, RAID 10). It provides the raw, protected capacity from which logical resources like LUNs are created. A LUN Group is a logical container for one or more LUNs. Its primary purpose is to simplify storage provisioning: instead of mapping many individual LUNs to a host, you map the entire LUN Group, making management more efficient.

OceanStor Dorado all-flash arrays provide the high performance and low latency required for transactional databases. HyperMetro’s active-active, synchronous replication ensures an RPO of 0 (zero data loss) and an RTO near zero by allowing immediate failover to the secondary site, which is continuously updated. This is the only option that guarantees both zero data loss and instantaneous recovery.0