dysolve Posted March 15, 2015 Share Posted March 15, 2015 I found a 2TB samsung drive that I have not use for some time so I thought I would had it to my array. I put it in and started preclear from command line using screen. while the preclear is working it has been going for 22 hours almost and has only done 7%. I noticed it is running at around 2MB/s. I am sure last time I precleared a drive it was more like 40MB/s. I have run a smart report and it is attached. what else can I test? thanks in advance. smart.txt Quote Link to comment
itimpi Posted March 15, 2015 Share Posted March 15, 2015 A syslog might be useful so we can see if any disk errors are being reported. I think it is quite likely with that sort of speed, and the type of errors reported might help narrow down the cause. Quote Link to comment
dysolve Posted March 15, 2015 Author Share Posted March 15, 2015 syslog is now attached syslog-1.zip Quote Link to comment
SSD Posted March 15, 2015 Share Posted March 15, 2015 1 Raw_Read_Error_Rate 0x002f 100 100 051 Pre-fail Always - 0 - NORMAL 2 Throughput_Performance 0x0026 252 252 000 Old_age Always - 0 - NORMAL 3 Spin_Up_Time 0x0023 067 065 025 Pre-fail Always - 10191 - NORMAL 4 Start_Stop_Count 0x0032 097 097 000 Old_age Always - 3214 - NORMAL 5 Reallocated_Sector_Ct 0x0033 252 252 010 Pre-fail Always - 0 - NORMAL (key attribute, >0 often bad) 7 Seek_Error_Rate 0x002e 252 252 051 Old_age Always - 0 - NORMAL 8 Seek_Time_Performance 0x0024 252 252 015 Old_age Offline - 0 - NORMAL 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 756 - NORMAL 10 Spin_Retry_Count 0x0032 252 252 051 Old_age Always - 0 - NORMAL 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 1 - UNUSUAL but ok I think 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 433 - NORMAL 181 Program_Fail_Cnt_Total 0x0022 100 100 000 Old_age Always - 3859042 - SCARY - but higher values seem common for this drive 191 G-Sense_Error_Rate 0x0022 100 100 000 Old_age Always - 9 - NOT SURE - has drive been dropped 192 Power-Off_Retract_Count 0x0022 252 252 000 Old_age Always - 0 - NORMAL 194 Temperature_Celsius 0x0002 057 052 000 Old_age Always - 43 (Min/Max 14/49) - ON THE WARM SIDE 195 Hardware_ECC_Recovered 0x003a 100 100 000 Old_age Always - 0 - NORMAL 196 Reallocated_Event_Count 0x0032 252 252 000 Old_age Always - 0 - NORMAL (key attribute, >0 often bad) 197 Current_Pending_Sector 0x0032 252 252 000 Old_age Always - 0 - NORMAL (key attribute, >0 often bad) 198 Offline_Uncorrectable 0x0030 252 252 000 Old_age Offline - 0 - NORMAL (key attribute, >0 often bad) 199 UDMA_CRC_Error_Count 0x0036 100 100 000 Old_age Always - 7 - SIGN OF CABLING ISSUE 200 Multi_Zone_Error_Rate 0x002a 100 100 000 Old_age Always - 998 - OFTEN SIGN OF DRIVE PROBLEM 223 Load_Retry_Count 0x0032 100 100 000 Old_age Always - 1 - UNUSUAL but ok I think 225 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 3286 - NORMAL I'm most concerned with the values highlighted in Red. It does look like you have, or have had in the past, a cabling problem with the drive. Suggest reattaching or replacing the SATA cable and resecuring hte power. Quote Link to comment
dysolve Posted March 15, 2015 Author Share Posted March 15, 2015 thanks for the help, it was in an external drive case but that failed for some unknown reason. But the drive worked fine for 6 months afterwards once I removed it from the case. I can not remember it getting dropped but I do have young kids LOL. So I should stop the pre-clear check the cables and try again? Quote Link to comment
SSD Posted March 15, 2015 Share Posted March 15, 2015 Yes - that would be my suggestion. You are not going to add it to your array behaving like that. And if it speeds up it will finish hugely quicker than letting that continue. I find it is best to change everything about the connection. Different power connector. Different port. Different cable. Different bay in drive cage (if using them). Anything in the connection chain you can change, change. Quote Link to comment
dysolve Posted March 15, 2015 Author Share Posted March 15, 2015 My issue is I run an hp micro server so I can not move the drives or change cables etc. I will have to do some reading about the micro servers to see what I can do. I have another 2tb drive which gets a random smart error about temp so I will give that a try and see if the preclude is any faster Quote Link to comment
dysolve Posted May 12, 2015 Author Share Posted May 12, 2015 I purchased two new 3tb drives and they precleared in under two days. Put the slow precleared disk in my pc and it came up with bad sectors and heaps of them! Quote Link to comment
itimpi Posted May 12, 2015 Share Posted May 12, 2015 I purchased two new 3tb drives and they precleared in under two days. Put the slow precleared disk in my pc and it came up with bad sectors and heaps of them! What did the SMART report say at that time? Did it show any indication of potential problems? Quote Link to comment
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