SandForce S.M.A.R.T. attributes

ID Hex Name Description
01 01 Raw Read Error Rate Raw error related to ECC errors. Correctable and uncorrectable RAISE (Redundant Array of Independent Silicon Elements) errors are included in the error count.1
05 05 Retired Block Count Tracks the total number of retired blocks. Data is calculated as 100 – (100 x RBC : MRB), where RBC is the retired block count and MRB is the minimum required blocks. Also an indicator of remaining life.1
09 09 Power On Hours (POH) Count of hours in power-on state. The raw value of this attribute shows total count of hours in power-on state.1
12 0C Device Power Cycle Count This attribute indicates the count of full hard disk power on/off cycles.1
13 0D Soft Read Error Rate The number of corrected (CECC) read errors reported.2
100 64 Program/Erase Cycles This attribute counts the number of flash program and erase cycles across the entire drive over the life of the drive.2
170 AA Reserved Block Count The number of reserved spares for bad block handling.2
171 AB Program Fail Block Count Counts the number of flash program failures.1
172 AC Erase Fail Block Count Counts the number of flash erase failures.1
174 AE Unexpected Power Loss Count Counts the number of unexpected power loss events since the drive was deployed.1
177 B1 Wear Range Delta Returns the percent difference in wear between the most-worn block and least-worn block.1
181 B5 Program Fail Count Four bytes used to show the program failures since the drive was deployed (identical to attribute 171).1
182 B6 Erase Fail Count Four bytes used to show the number of block erase failures since the drive was deployed (identical to attribute 172).1
184 B8 Reported I/O Error Detection Code Rate I/O Error Detection Code rate. This attribute tracks the number of end-to-end CRC errors encountered during host initiated reads and writes.2
187 BB Reported Uncorrectable Errors This attribute tracks the umber of uncorrectable RAISE (Redundant Array of Independent Silicon Elements) errors reported back to the host for all data access commands.1
194 C2 Temperature Temperature reported from the on-board sensor.1
195 C3 On the fly ECC Uncorrectable Error Count This attribute tracks the number of uncorrectable errors.1
196 C4 Reallocation Event Count This attribute tracks the number of blocks that fail programming which are reallocated as a result.1
198 C6 Uncorrectable Sector Count Uncorrectable sector count relative to the number of sectors read this power cycle. The normalized value is only computed when the number of bits is greater than 1010. The count is cleared at power-on reset and wraps to 1010 when it exceeds 1012.3
199 C7 SATA R-Errors (CRC) Error Count SATA R-Errors (CRC) Error Count.2
201 C9 Uncorrectable Soft Read Error Rate Number of soft read errors that cannot be fixed on-the-fly and requires deep recovery via RAISE (Redundant Array of Independent Silicon Elements).2
204 CC Soft ECC Correction Rate Number of errors corrected by RAISE (Redundant Array of Independent Silicon Elements) that cannot be fixed on-the-fly and requires ECC (multilevel) to correct.2
230 E6 Life Curve Status A life curve used to help predict life in terms of the endurance based on the number of writes to flash.2
231 E7 SSD Life Left A measure of the estimated life left, based on a combination of PE cycles and available reserve blocks. 100 is a new drive, 10 = replace as it has sufficient reserved blocks but the PE cycles have been used, 0 = insufficient reserved blocks, drive is read only to allow recovery of data on the drive.1
232 E8 Available Reserved Space The number of reserved blocks remaining.1
233 E9 Reserved1
234 EA Reserved1
235 EB Power Fail Backup Health |Power Fail Backup Health is an estimation of capacitive hold-up capability based on a timed discharge test, wherein discharge (past a pre-defined voltage threshold) faster than a predefined time-value threshold indicates a capacitor bank whose capacitance value is degraded past the point of reliability to protect SSD data. If an SSD has never run a "SuperCapacitor Test", the normalized value of this Attribute remains at '100'.3
241 F1 Lifetime Writes from Host Indicates the total amount of data written from hosts since the drive was deployed. This is stored in 4 bytes. The number stores represents the number of bytes written by the host to the drive, in 64 GB increments.1
242 F2 Lifetime Reads from Host Indicates the total amount of data read to hosts since the drive was deployed. This is stored in 4 bytes. The number stores represents the number of bytes read by the host to the drive, in 64 GB increments.1

Sources

1 SandForce attributes table
2 Viking Element Enterprise SSD Datasheet - 2.5" Products
3 Kingston SMART attributes details

Last edited Apr 20, 2016 at 1:18 PM by Eruestan, version 2