wisem2540 Posted December 20, 2015 Share Posted December 20, 2015 One my older Seagate 2TB drives is showing a RAW value of 77086, if my math is correct, this thing is almost 9 years old. Am I looking at the right value here? I am curious to see some people who have been at this a while and how old some of their drives might be. 9 years seems pretty long for an HDD these days. If I am right, I don't even wanna know what I paid for this thing 9 years ago Quote Link to comment
garycase Posted December 20, 2015 Share Posted December 20, 2015 One my older Seagate 2TB drives is showing a RAW value of 77086, if my math is correct, this thing is almost 9 years old. Am I looking at the right value here? Are you looking at the power-on hours value? If so, that value would indeed be close to 9 years -- but it can't be correct for a 2TB drive, as drives that size weren't available 9 years ago. FWIW 9 years ago the earliest 750GB drives were just coming on the market -- I bought a couple for ~ $250 each. 1TB drives were about a year later, with 1.5TB and then 2TB drives following about a year apart. So the oldest 2TB drives today would be about 6-7 years old. If you have a 2TB showing that many hours something is wrong with the SMART data. ... If I am right, I don't even wanna know what I paid for this thing 9 years ago Trust me, it wasn't all that much. Modern drives (anything in the past decade) are VERY inexpensive historically. The first hard drive I bought for my home was a 26MB (Yes, MB) Seagate that, after a 10% discount, cost me $4500. That's about $173 MILLION per TB ... and that was in 1980, so in today's dollars that would be over half a billion dollars !! [$530 million to be precise] A 2TB drive at that rate would cost over a billion dollars Quote Link to comment
wisem2540 Posted December 20, 2015 Author Share Posted December 20, 2015 Here is a snippet of the smart data from unraid. Let me know what you think SMART Attributes Data Structure revision number: 10 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x000f 114 099 006 Pre-fail Always - 67489640 3 Spin_Up_Time 0x0003 093 087 000 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 098 098 020 Old_age Always - 2747 5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0 7 Seek_Error_Rate 0x000f 072 060 030 Pre-fail Always - 19735809 9 Power_On_Hours 0x0032 012 012 000 Old_age Always - 77170 10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0 12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 55 If you are referring to the VALUE, rather than RAW VALUE, then it 12, and that does not seem right either. Quote Link to comment
garycase Posted December 20, 2015 Share Posted December 20, 2015 That does indeed show 77,10 hours = almost 9 years. This cannot, however, be correct for a 2TB drive, as they simply haven't been available that long. Here's a 26 Jan 2009 article noting the arrival of the first 2TB drives: http://www.engadget.com/2009/01/26/western-digitals-2tb-caviar-green-hdd-on-sale-in-australia/ So either the SMART data is incorrect or you're looking at a different drive than you think. The largest drives that could be 9 years old would be 750GB drives. The value of 12 is probably correct -- this decreases from 100 as the drive ages ... and 77170 hours is certainly a very old drive. Quote Link to comment
bonienl Posted December 20, 2015 Share Posted December 20, 2015 Some disks show their power-on-time in minutes instead of hours, in that case your disk would be around 3.5 years old. Quote Link to comment
wisem2540 Posted December 20, 2015 Author Share Posted December 20, 2015 Some disks show their power-on-time in minutes instead of hours, in that case your disk would be around 3.5 years old. Minutes makes much more sense...especially if you factor in the time between my initial post and when I posted the snippet. Thanks for that. Quote Link to comment
garycase Posted December 21, 2015 Share Posted December 21, 2015 I suppose anything's possible, but I've never seen it on ANY disk ... Seagate, WD, Hitachi, Maxtor, Toshiba, Samsung, or any other drive I've ever had. And note that the parameter is called "Power On Hours". In addition, if it WAS in minutes, then it's showing less than 54 days of power-on time [77170 / 60 => 1286.17 hours ... 1286.17 /24 = 53.59 days] I seriously doubt that's what it's showing. I think you simply have an erroneous SMART counter. Quote Link to comment
bonienl Posted December 21, 2015 Share Posted December 21, 2015 From 'smartctl', the following option can be included (only shown are the settings relevant to PoH), to make life even more complicated, I have a couple of SSDs which count in days instead of hours): -v ID,FORMAT[:BYTEORDER][,NAME], --vendorattribute=ID,FORMAT[:BYTE- ORDER][,NAME] [ATA only] Sets a vendor-specific raw value print FORMAT, an optional BYTEORDER and an optional NAME for Attribute ID. This option may be used multiple times. The Attribute ID can be in the range 1 to 255. If 'N' is speci- fied as ID, the settings for all Attributes are changed. The optional BYTEORDER consists of 1 to 8 characters from the set '012345rvwz'. The characters '0' to '5' select the byte 0 to 5 from the 48-bit raw value, 'r' selects the reserved byte of the attribute data block, 'v' selects the normalized value, 'w' selects the worst value and 'z' inserts a zero byte. The default BYTEORDER is '543210' for all 48-bit formats, 'r543210' for the 54-bit formats, and '543210wv' for the 64-bit formats. For example, '-v 5,raw48:012345' prints the raw value of attribute 5 with big endian instead of little endian byte order- ing. The NAME is a string of letters, digits and underscore. Its length should not exceed 23 characters. The '-P showall' option reports an error if this is the case. -v help - Prints (to STDOUT) a list of all valid arguments to this option, then exits. Valid arguments for FORMAT are: min2hour - Raw Attribute is power-on time in minutes. Its raw value will be displayed in the form "Xh+Ym". Here X is hours, and Y is minutes in the range 0-59 inclusive. Y is always printed with two digits, for example "06" or "31" or "00". sec2hour - Raw Attribute is power-on time in seconds. Its raw value will be displayed in the form "Xh+Ym+Zs". Here X is hours, Y is minutes in the range 0-59 inclusive, and Z is sec- onds in the range 0-59 inclusive. Y and Z are always printed with two digits, for example "06" or "31" or "00". halfmin2hour - Raw Attribute is power-on time, measured in units of 30 seconds. This format is used by some Samsung disks. Its raw value will be displayed in the form "Xh+Ym". Here X is hours, and Y is minutes in the range 0-59 inclusive. Y is always printed with two digits, for example "06" or "31" or "00". msec24hour32 - Raw Attribute is power-on time measured in 32-bit hours and 24-bit milliseconds since last hour update. It will be displayed in the form "Xh+Ym+Z.Ms". Here X is hours, Y is minutes, Z is seconds and M is milliseconds. Quote Link to comment
Richard Williams Posted October 4, 2022 Share Posted October 4, 2022 On 12/20/2015 at 11:29 AM, garycase said: s (anything in the past decade) are VERY inexpensive historically. The first hard drive I bought for my home was a 26MB (Yes, MB) Seagate that, after a 10% disc I noticed that on some Seagate Barracuda drives, "power on hours" is reported X + 65536 hours but where a short self test will report X hours suggesting that the most significant bit is included as 1 for power on hours and 0 for self test power on hours, maybe 0x10000 is added to the power on hours, I have seen this happen on a few drives including ST3750640NS and ST3250310AS these are 750GB and 250GB drives Quote Link to comment
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