022 is probably a newer revision of the base model (002). According to the spec sheet it uses 0.1w less poiwer. Some firmware tweaks and firmware level functionality bumps too, particularly for hosts that have SMR aware optimisations.
Now that you mention it, there's quite a of new technical information in the manual for the 022 model. They appear to have published the exact shingling and non-shingled geometries:
These drives provide the following key features:
• Host aware, optimized for SMR performance and capable of ZAC command support
• High instantaneous (burst) data-transfer rates (up to 600MB per second).
• Streaming video optimization - consistent command completion times & ERC support
• Idle3 power mode support
• TGMR recording technology provides the drives with increased areal density.
• State-of-the-art cache and on-the-fly error-correction algorithms.
• Native Command Queuing with command ordering to increase performance in demanding applications.
• Full-track multiple-sector transfer capability without local processor intervention.
• Seagate AcuTrac™ servo technology delivers dependable performance, even with hard drive track widths of only 75 nanometers.
• Seagate SmartAlign™ technology provides a simple, transparent migration to Advanced Format 4K sectors
• Quiet operation.
• Compliant with RoHS requirements in China and Europe.
• SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.
• Support for S.M.A.R.T. drive monitoring and reporting.
• Supports latching SATA cables and connectors.
• Worldwide Name (WWN) capability uniquely identifies the drive. 1.2 Zone Structure
Archive HDD models use SMR (Shingled Magnetic Recording Technology), physically formatted containing two types of
zones. 64 “Conventional Zones” which are not associated with write pointer, and the media is non-SMR and 29808
Sequential Write preferred Zones which are SMR media. For the sequential write referred zones there is a write pointer to
indicated preferred write location. For the conventional zone writes can occur randomly for any block size. New
commands which report zonal structure, resetting zonal write pointers, as well as managing zonal properties are available
for sequential write preferred zones through ZAC commands.
Archive HDD Conventional Zone Structure
• There are 64 256 MiB Conventional Zones. (ie. Not Shingled)
• The conventional zone is located at the outer diameter and is 16GB.
• Sequential Read and Writes to this zones will perform at similar data rates.
• Random Write commands can be issued in any order without any performance delay.
• Zone designed specifically for random writes data. For example: logs and meta data.
There are 29808 Sequential Write Zones
• Each zone is 2e19 logical blocks in size or 256 MiB each.
• Each zone is a shingled zone.
• To achieve best performance use of ZAC commands is required.
• Re-setting write pointers for each zone is required before reuse.
Optimal number of open sequential write preferred zones
• Advised - the largest number of zones that should be open for best performance, is reported in Identify Device Data
log 0x30 page 0x00h
Optimal number of non-sequentially written sequential write preferred zones
• Advised - the largest number of write preferred zonesthat should be randomly written for best performance, is
reported in identify device data log 0x30 page 0x00h
T-13 standards define the new ZAC commands; REPORT ZONES EXT to query the drive on what zones exist and their
current condition, RESET WRITE POINTER EXT to reset the write pointers, OPEN ZONE EXT, CLOSE ZONE EXT, and FINISH
ZONE EXT to Open, Close, and Finish zones. To achieve optimal performance, an SMR-aware Host driver will need to write
sequentially to all sequential write referred zones.
See the T13 Web Site at http://www.t13.org for ACS-4, T13/BSR INCIT 529 for command details.