On Sun, Apr 15, 2007 at 02:49:16 +0300, Linas Žvirblis wrote: > Sorry for being little off-topic, but I am really clueless on where else > I could ask. > > I just installed "smartmontools" on this brand new laptop with SATA HDD, > and the numbers I am seing are a bit scary. This is what I am talking > about... > > 1 Raw_Read_Error_Rate ... 90912 > 2 Throughput_Performance ... 22348118 > 5 Reallocated_Sector_Ct ... 8589934592000 > 7 Seek_Error_Rate ... 1559 > 196 Reallocated_Event_Count ... 458686464 > 195 Hardware_ECC_Recovered ... 281 > 203 Run_Out_Cancel ... 433781670603 > > ...full output attached. > > 195 and 203 are sometimes increasing, and sometimes decreasing, 5 and > 196 seem to be stable. > > This just does not make any sense. Hard drive cannot be _that_ broken > and still operational, can it? I ran the "long" and "offline" tests, and > there does not seem to be any errors in the logs. > > What is going on?
[...] > === START OF INFORMATION SECTION === [...] > SMART Error Log Version: 1 > No Errors Logged > > SMART Self-test log structure revision number 1 > Num Test_Description Status Remaining LifeTime(hours) > LBA_of_first_error > # 1 Extended offline Completed without error 00% 128 - As far as my understanding of SMART goes: The "raw" numbers are difficult to interpret, their meaning varies from one manufacturer to the next one, etc. I think the "No Errors Logged" message and the fact that you can complete an extended offline test without error means that your drive is OK. I guess if you really want to know which SMART parameters correlate with drive failures in practice then you should probably read the results of Google's extensive study "Failure Trends in a Large Disk Drive Population" http://labs.google.com/papers/disk_failures.pdf I did not have time to look at that one in detail so far, but I think it is safe to assume that Google has lots of statistics on the issue. -- Regards, | http://users.icfo.es/Florian.Kulzer Florian |
