Intel 320 SSD on Linux, write wear indicator, smartctl

[idata]

Hi All,

I am burning in a new Intel 320 SSD on Linux for use with a database, and the write wearing is something I would like to verify and make sure it fits with our write capacity requirements. I am trying to grok the smartctl output here below, but don't know what to look at that would tell me how many writes the MLC has taken and how much is left. Given the docs on the SMART output for the 320 I suspect its in the unknown attributes but not sure.

Regards,

Josh

320 Series SSDSA2CW300G3 MLC Solid State Drive

# smartctl -a /dev/sde

smartctl version 5.38 [x86_64-redhat-linux-gnu] Copyright (C) 2002-8 Bruce AllenHome page is http://smartmontools.sourceforge.net/ http://smartmontools.sourceforge.net/

=== START OF INFORMATION SECTION ===

Device Model: INTEL SSDSA2CW300G3Serial Number: CVPR111002XL300EGNFirmware Version: 4PC10302User Capacity: 300,069,052,416 bytesDevice is: Not in smartctl database [for details use: -P showall]ATA Version is: 8ATA Standard is: ATA-8-ACS revision 4Local Time is: Wed Apr 13 17:41:13 2011 UTCSMART 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: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled.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 Offlinedata collection: ( 1) seconds.Offline data collectioncapabilities: (0x71) SMART execute Offline immediate. No Auto Offline data collection support. Suspend Offline collection upon new command. No Offline surface scan supported. Self-test supported. 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 routinerecommended polling time: ( 1) minutes.Extended self-test routinerecommended polling time: ( 1) minutes.Conveyance self-test routinerecommended polling time: ( 1) minutes.SCT capabilities: (0x003d) SCT Status supported. SCT Feature Control supported. SCT Data Table supported.

SMART Attributes Data Structure revision number: 5

Vendor Specific SMART Attributes with Thresholds:ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 3 Spin_Up_Time 0x0020 100 100 000 Old_age Offline - 0 4 Start_Stop_Count 0x0030 100 100 000 Old_age Offline - 0 5 Reallocated_Sector_Ct 0x0032 100 100 000 Old_age Always - 0 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 117 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 2170 Unknown_Attribute 0x0033 100 100 010 Pre-fail Always - 0171 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0172 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0184 Unknown_Attribute 0x0033 100 100 090 Pre-fail Always - 0187 Reported_Uncorrect 0x0032 100 100 000 Old_age Always - 0192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 2225 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 16048226 Load-in_Time 0x0032 100 100 000 Old_age Always - 36227 Torq-amp_Count 0x0032 100 100 000 Old_age Always - 48228 Power-off_Retract_Count 0x0032 100 100 000 Old_age Always - 269162232 Unknown_Attribute 0x0033 100 100 010 Pre-fail Always - 0233 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 0241 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 16048242 Unknown_Attribute 0x0032 100 100 000 Old_age Always - 18807

[idata]

No Intel SSD, as of this writing, have thermistors inside of them. So you will not be able to monitor SSD temperature with Intel drives. Many other SSD companies also do not include thermistors, so assuming one exists is a bad assumption.