I haven't seen any tests that show these drives provide any additional performance, or drive reliability. I just chalk those up to being a gimmick that drive manufacturers use to get a little more scratch from the home-rolled NAS community.
As general speaking, some difference exists:
- firmware is different, and you can see that bad blocks are faster recover from spare blocks reserv for NAS/Enterprise class disks
- SCT is unavailable for home-user disks class(very usefull for any RAID config)
- the max number of unrecover errors blocks / data read
And take a look here(
93878 = Power_On_Hours = more then 10 years). I have 2 pcs
=== START OF INFORMATION SECTION ===
Model Family: Hitachi Ultrastar 7K1000
Device Model: Hitachi HUA721050KLA330
Serial Number: GTE400P6XXXXX
Firmware Version: GK6OA74A
User Capacity: 500.107.862.016 bytes
Device is: In smartctl database [for details use: -P show]
ATA Version is: 7
ATA Standard is: ATA/ATAPI-7 T13 1532D revision 1
Local Time is: Wed Oct 17 10:32:01 2018 EEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x84) Offline data collection activity
was suspended by an interrupting command from host.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: (8579) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 143) minutes.
SCT capabilities: (0x003f) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0004 100 100 054 Old_age Offline - 77
3 Spin_Up_Time 0x0007 117 117 024 Pre-fail Always - 426 (Average 424)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 86
5
Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000a 100 100 067 Old_age Always - 0
8 Seek_Time_Performance 0x0004 136 136 020 Old_age Offline - 31
9
Power_On_Hours 0x0012 087 087 000 Old_age Always -
93878
10 Spin_Retry_Count 0x0012 100 100 060 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 86
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 154
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 154
194 Temperature_Celsius 0x0002 146 146 000 Old_age Always - 41 (Lifetime Min/Max 17/50)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197
Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198
Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0
223 Load_Retry_Count 0x000a 100 100 000 Old_age Always - 0
SMART Error Log Version: 1
No Errors Logged