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much data is being transferred. Therefore, constant host system IOs cause
check-pointing and S.M.A.R.T. log update relatively frequently (approximately
every 2 seconds); very slow or idle host transaction rates result in check-pointing
and S.M.A.R.T. log update less frequently (worst-case around every 2 minutes).
All logs are non-volatile except as within each of the log description.
Handling and reporting error conditions relating to the updating of S.M.A.R.T.
logs and S.M.A.R.T. Attributes is accomplished the same as handling error
conditions experienced while saving user data. Likewise, handling and reporting
error conditions relating to other processes (including background processes)
that occur while updating S.M.A.R.T. logs and S.M.A.R.T. Attributes is
accomplished the same as handling such error conditions while saving user data.
S.M.A.R.T. logs are validated by affecting the events being detected and logged;
the S.M.A.R.T. log always reflects the event that occurred, whether that event is
injected artificially or occurs independently.
5.1.9 S.M.A.R.T. Attributes
5.1.9.1 Supported (Baseline) Attributes
The following table shows the supported S.M.A.R.T. attributes.
Table 5-5: Baseline S.M.A.R.T. Attribute Summary
Raw error rate related to ECC errors.
Correctable and uncorrectable RAISE errors
are included in the error event count. (UECC +
Tracks the total number of retired blocks.
Count of hours in power-on state. The raw
value of this attribute shows total count of hours
This attribute indicates the count of full hard
disk power on/off cycles.
The number of corrected (CECC) read errors
reported. This feature is not available for
industrial versions, which are VRFS1xGA,
This attribute counts the Gigabytes of Flash
memory erases across the entire drive, over the
life of the drive. This feature is not available for
industrial versions, which are VRFS1xGA,
The number of reserved spares for bad block
handling. This feature is not available for
