I've been asked a million times what different acronyms stand for.
So without further delay we'll start adding what i know and if you want to know any of them feel free to start asking.
HDS - Hitachi Data Systems
HCS - Hitachi Command Suite
HDvM - Hitachi Device Manager
HTsM - Hitachi Tiered Storage Manager
HTnM - Hitachi Tuning Manager
HRpM - Hitachi Replication Manager
SN - Storage Navigator
CCI - Command Control Interface
HORCM - Hitachi Online Remote Copy Manager
TC - True Copy (Synchronous Replication)
HUR - Hitachi Universal Replicator (A-Sync Replication)
GAD - Global Active Device (active/active replication)
HDP - Hitachi Dynamic Pool
HDT - Hitachi Dynamic Tiering
HDI – Hitachi Data Ingestor
Hitachi Dynamic Tiering (HDT) simplifies storage administration by automatically optimizing data placement in 1, 2 or 3 tiers of storage that can be defined and used within a single virtual volume. Tiers of storage can be made up of internal or external (virtualized) storage, and use of HDT can lower capital costs
ZPR - Zero Page Reclaim
Zero Page Reclaim facility examines the volumes of physical capacity on a Hitachi Universal Storage Platform® and where the firmware determines that no data other than zeros is found on a Dynamic Provisioning software pool page, the physical storage is unmapped and 'returned' to the pool's free capacity.