IBM DTCA-24090 Hard Drive Specifications - Page 67

Deviations From Standard - smart

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8.0 Deviations From Standard The device conforms to the referenced specifications, with deviations described below. Check Power Mode CHECK POWER MODE command returns F F h to Sector Count Register when the device is in Idle mode. This command does not support 80h as the return value. Write Verify WRITE VERIFY command does not include read verification after write operation. The function is exactly same as WRITE SECTORS command. Standby Timer Even if IDLE command or STANDBY command is issued with Sector Cuont register value 00h, Standby Timer is not disabled, but it sets default value 109 minutes. In case Sector Count register value is other than 00h, Standby Timer is set to (Sector Count register value) x 5 seconds. SMART Return Status SMART R E T U R N STATUS subcommand does not check advisory attributes. That is, the device will not report threshold exceeded condition unless prefailure attributes exceed their corresponding thresholds. For example, Power-On Hours Attribute never results in negative reliability status. © Copyright IBM Corp. 1997 59

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8.0
Deviations From Standard
The device conforms to the referenced specifications, with deviations described below.
Check Power Mode
CHECK POWER MODE command returns FFh to Sector Count Register when
the device is in Idle mode. This command does not support 80h as the return value.
Write Verify
WRITE VERIFY command does not include read verification after write operation.
The function is exactly same as WRITE SECTORS command.
Standby Timer
Even if IDLE command or STANDBY command is issued with Sector Cuont reg-
ister value 00h, Standby Timer is not disabled, but it sets default value 109 minutes.
In case Sector Count register value is other than 00h, Standby Timer is set to (Sector
Count register value) x 5 seconds.
SMART Return Status
SMART
RETURN
STATUS subcommand does not check advisory attributes.
That is, the device will not report threshold exceeded condition unless prefailure attri-
butes exceed their corresponding thresholds. For example, Power-On Hours Attribute
never results in negative reliability status.
Copyright IBM Corp. 1997
59