On Wed, Oct 17, 2018 at 11:57:34PM +0000, Hinz, David (GE Healthcare) wrote: > I'd like to submit an opposing viewpoint. > If SMART disk analysis says it's going to break, replace it. > Nothing is worth risking lost data.
I second this. My only case of false positive (SMART reports complete failure while disk still seems to work) has been a worn out 2 TB "green" WD disk. By "worn out" I mean that it was (a) heavily used and (b) all it's mates of same vintage, age and heavy use have already failed (with i/o errors, etc). K.O. > > > On 10/17/18, 4:50 PM, "owner-scientific-linux-us...@listserv.fnal.gov on > behalf of Konstantin Olchanski" > <owner-scientific-linux-us...@listserv.fnal.gov on behalf of > olcha...@triumf.ca> wrote: > > > > > # smartctl -a /dev/sda > > ... > > Device Model: TOSHIBA MG03ACA100 > > ... > > Thank you for posting your data, here is my reading of smartctl data: > > > > > === START OF READ SMART DATA SECTION === > > SMART overall-health self-assessment test result: PASSED > > > > this you can ignore, I have held in my hands disks that reported "PASSED" > but were dead, could not read, could not write anything. Also had > disks that worked perfectly but reported "FAILED" here. > > > Next goes the meat of the data: > > > ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED > WHEN_FAILED RAW_VALUE > > 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always > - 26 > > Your disk is brand new, only ever saw 26 power cycles. > > > 9 Power_On_Hours 0x0032 051 051 000 Old_age Always > - 19725 > > Your disk is brand new, 19725 hours is 2.2 years. > > > 194 Temperature_Celsius 0x0022 100 100 000 Old_age Always > - 32 (Min/Max 20/37) > > You have good cooling, temperature is 32C, as high as 40C is usually > okey, above 50C means the cooling fans are dead. > > > 5 Reallocated_Sector_Ct 0x0033 100 100 050 Pre-fail Always > - 0 > > 196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always > - 0 > > 198 Offline_Uncorrectable 0x0030 100 100 000 Old_age > Offline - 0 > > 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always > - 0 > > Your disk does not report any problems reading or writing data to the > magnetic media. > > Conclusion: healthy as a bull. > > -- > Konstantin Olchanski > Data Acquisition Systems: The Bytes Must Flow! > Email: olchansk-at-triumf-dot-ca > Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada > > -- Konstantin Olchanski Data Acquisition Systems: The Bytes Must Flow! Email: olchansk-at-triumf-dot-ca Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada