April 13, 20179 yr As it says preclear is slow at 9.6MB/s, pre-read was 120MB/s. My experience is these disks run much closer to 180-205MB/s. ############################################################################################################################ # # # unRAID Server Preclear of disk X6MGK0E4F57D # # Cycle 1 of 1, partition start on sector 64. # # # # # # Step 1 of 5 - Pre-read verification: [11:30:16 @ 120 MB/s] SUCCESS # # Step 2 of 5 - Zeroing in progress: (1% Done) # # # # # # # # # # # # # # # # # # ** Time elapsed: 1:27:54 | Write speed: 9.6 MB/s | Average speed: 9 MB/s # # # ############################################################################################################################ # Cycle elapsed time: 12:58:12 | Total elapsed time: 12:58:13 # ############################################################################################################################ ############################################################################################################################ # # # S.M.A.R.T. Status default # # # # # # ATTRIBUTE INITIAL STATUS # # 5-Reallocated_Sector_Ct 0 - # # 9-Power_On_Hours 43 - # # 194-Temperature_Celsius 31 - # # 196-Reallocated_Event_Count 0 - # # 197-Current_Pending_Sector 0 - # # 198-Offline_Uncorrectable 0 - # # 199-UDMA_CRC_Error_Count 2026 - # # # # # # # # # # # ############################################################################################################################ # SMART overall-health self-assessment test result: PASSED # ############################################################################################################################ Edited April 13, 20179 yr by eagle470
April 13, 20179 yr The UDMA_CRC_Error_Count smart attribute is an indicator of a bad or loose sata cable. It is over 2000. Once it is fixed the value should stop climbing and drive should work fine.
April 13, 20179 yr Author 9 minutes ago, bjp999 said: The UDMA_CRC_Error_Count smart attribute is an indicator of a bad or loose sata cable. It is over 2000. Once it is fixed the value should stop climbing and drive should work fine. Sadly that was fixed on Tuesday.
April 13, 20179 yr Author Ended up RMA'ing the drive., put a replacement (I had one on hand) in and it's buring at 189MB/s (same drive model)
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