Is this too OT? Let me know.. The Storage Review DB would be a decent 1st approximation (includes data on ~35K drives), but relies on entering the info on only drives that the DB knows about, and also relies on info that the person entering the data remembers - how many hours in use, etc. It's also available only to registered users who might be entering spurious data to gain access to the DB. The SMART data (granted, it would only be possible to collect data from SMART drives) would tell you considerably more info: (including that I was mistaken when I previously said I only bought IBM's and Seagates) :) This is the kind of info that wold be quite useful to have available in a CDDB-like DB. It would also point out which drives are susceptible to failure under continuous-on conditions versus frequent power-cycling, etc. an example from my home system: 1062 $ smartctl -a /dev/hda smartctl version 5.32 Copyright (C) 2002-4 Bruce Allen Home page is http://smartmontools.sourceforge.net/ === START OF INFORMATION SECTION === Device Model: WDC WD800JB-00CRA1 Serial Number: WD-WMA8E4088773 Firmware Version: 17.07W17 Device is: In smartctl database [for details use: -P show] ATA Version is: 5 ATA Standard is: Exact ATA specification draft version not indicated Local Time is: Wed Jun 22 14:24:56 2005 PDT SMART 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: (0x84) Offline data collection activity was suspended by an interrupting command from host. Auto Offline Data Collection: Enabled. 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 Offline data collection: (3120) seconds. Offline data collection capabilities: (0x3b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. Conveyance Self-test supported. No 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. No General Purpose Logging support. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 58) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000b 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0007 099 095 021 Pre-fail Always - 4141 4 Start_Stop_Count 0x0032 100 100 040 Old_age Always - 122 5 Reallocated_Sector_Ct 0x0033 199 199 140 Pre-fail Always - 2 7 Seek_Error_Rate 0x000b 200 200 051 Pre-fail Always - 0 9 Power_On_Hours 0x0032 075 075 000 Old_age Always - 18940 10 Spin_Retry_Count 0x0013 100 100 051 Pre-fail Always - 0 11 Calibration_Retry_Count 0x0013 100 100 051 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 120 196 Reallocated_Event_Count 0x0032 198 198 000 Old_age Always - 2 197 Current_Pending_Sector 0x0012 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0012 200 200 000 Old_age Always - 0 199 UDMA_CRC_Error_Count 0x000a 200 253 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0009 200 200 051 Pre-fail Offline - 0 SMART Error Log Version: 1 No Errors Logged On Wednesday 22 June 2005 1:38 pm, Jure Pecar wrote: > On Wed, 22 Jun 2005 13:16:33 -0700 > > Harry Mangalam <hjm@xxxxxxxxx> wrote: > > Perhaps something like the CDDB, where a you can run an applet on a > > cronjob that will upload your disk's SMART data cache to a remote DB on > > a regular basis, so the millions of disks out there can be profiled. > > Hmmm - sounds like a good undergrad project. Did someone say Summer of > > Code? (http://code.google.com/summerofcode.html) > > Actually if you look at the storagereview.com, they already have a crude > form of this online under "reliability survey". You have to login, then you > can enter disk model that you have expirience with and what were those > expiriences. There's quite some info already available ... -- Cheers, Harry Harry J Mangalam - 949 856 2847 (vox; email for fax) - hjm@xxxxxxxxx <<plain text preferred>> - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
