November 30, 201510 yr I have three 10k 300GB SAS drives and thought I would use them as a btrfs cache. They are installed on a M1015 card in a raid 10 btrfs cache. So far I am happy with the performance and will probably leave it as is unless something changes. The one issue that I have not been able to figure out is the temperature always show as a '*" in the WebGUI. I have looked a bit further into it and it appears that the SMART attributes in disk properties are words from the smart report but not an attributes table. When running a smartctl -a report it is apparent that the SMART information limited in nature and is not in the usual table format (below). smartctl 6.2 2013-07-26 r3841 [x86_64-linux-4.1.13-unRAID] (local build) Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Vendor: HP Product: EG0300FBDBR Revision: HPD6 User Capacity: 300,000,000,000 bytes [300 GB] Logical block size: 512 bytes Rotation Rate: 10020 rpm Form Factor: 2.5 inches Logical Unit id: 0x5000cca0128d2580 Serial number: XXXXXXX Device type: disk Transport protocol: SAS Local Time is: Mon Nov 30 13:38:30 2015 ACDT SMART support is: Available - device has SMART capability. SMART support is: Enabled Temperature Warning: Enabled === START OF READ SMART DATA SECTION === SMART Health Status: OK Current Drive Temperature: 33 C Drive Trip Temperature: 65 C Manufactured in week 33 of year 2011 Specified cycle count over device lifetime: 50000 Accumulated start-stop cycles: 17 Specified load-unload count over device lifetime: 300000 Accumulated load-unload cycles: 39 Elements in grown defect list: 0 Vendor (Seagate) cache information Blocks sent to initiator = 75769413894144 Error counter log: Errors Corrected by Total Correction Gigabytes Total ECC rereads/ errors algorithm processed uncorrected fast | delayed rewrites corrected invocations [10^9 bytes] errors read: 0 678 0 0 0 1623.788 0 write: 0 52 0 52 0 661.868 0 Non-medium error count: 162 SMART Self-test log Num Test Status segment LifeTime LBA_first_err [sK ASC ASQ] Description number (hours) # 1 Background short Completed - 18 - [- - -] # 2 Background short Completed - 15 - [- - -] Long (extended) Self Test duration: 2462 seconds [41.0 minutes] I am looking for some help on whether it is possible to get the SMART temperature into unraid. I like to know if the drives are being cooked. I am not too worried about the other SMART attributes, from my experience drives will fail when they feel like it and not when SMART says so.
June 2, 201610 yr did you ever get help with this? I have sas drives on the same controller and not only dont get a temp they also will not spin down. Trying to get help but no one is responding to me either.
August 23, 20169 yr Author No never fixed this. I use mine as my cache so have never seen them spin down but just assumed that was due to them being a cache.
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