14 Constellation ES.2 Serial ATA Product Manual, Rev. D
S.M.A.R.T. Read Data Reports
• Attribute 192 - Emergency Retract Count
• Attribute 193 - Load/Unload Cycle Count
PowerChoice Manufacture Default Power Condition Timer Values
Default power condition timer values have been established to assure product reliability and data integrity. A
minimum timer value threshold of two minutes ensures the appropriate amount of background drive mainte-
nance activities occur. Attempting to set a timer values less than the specified minimum timer value threshold
will result in an aborted EPC "Set Power Condition Timer" subcommand.
Setting power condition timer values less than the manufacturer specified defaults or issuing the EPC "Go to
Power Condition" subcommand at a rate exceeding the default timers may limit this products reliability and
data integrity.
PowerChoice Supported Extended Power Condition Feature Subcommands
EPC Subcommand Description
00HRestore Power Condition Settings
01HGo to Power Condition
02HSet Power Condition Timer
03HSet Power Condition State
PowerChoice Supported Extended Power Condition Indentifiers
Power Condition Identifiers Power Condition Name
00HStandby_z
01 - 80HReserved
81HIdle_a
82HIdle_b
83HIdle_c
84 - FEHReserved
FFHAll EPC Power Conditions
Power Condition Name Manufacturer Default Timer Values
Idle_a 2 min
Idle_b 4 min
Idle_c 10 min
Standby_z 15 min