September 6, 2025Sep 6 Hi,I just bought a second-hand Dell T630 with 12 second-hand Toshiba 6TB hard disks, and I use them and 4 seagate 6TB from my previous machine to build the array. I format them and now they are empty.I tried to build the parity twice but each time I found that the parity sync will first run very well with high speed, and several (hundreds or thousands) read error begin to happen on some disks, and finally when position comes to around 50%, millions of read errors occurs on multiple Toshiba hard disks (some don't have that but some have). It makes the activity extreme low, and no write will happen to parity disks. However, I run the extended SMART test and ZRS scrub accross all the Toshiba disks and all of them are healthy.I have several questions.Will the read error leads to wrong result of parity? In other words, is it required to have 0 read errors when build the parity?Could you please help figure out where the issue occurs? Is it related to hard disks, cables or broad? It determines which seller I should find and how many component I need to replace.If both SMART test and ZRS scrub cannot detect the issue, how could I detect such issue during daily use? I mean is it normal to see the read error and I can just ignore that, or it is a strong signal once I found I should immedietely replace the disks?I'm looking forward to your response. Here are the logs and diagnostics.tower-syslog-20250906-1148.zip tower-diagnostics-20250906-1933.zip
September 6, 2025Sep 6 Community Expert 1 hour ago, Mr.win7 said:If both SMART testDo you mean the Extended SMART test? That is the only one that thoroughly tests a drive.
September 6, 2025Sep 6 Author 1 hour ago, itimpi said:Do you mean the Extended SMART test? That is the only one that thoroughly tests a drive.Yes, all the Toshiba disks are tested with extended smart test and passed.
September 6, 2025Sep 6 Community Expert Several of your disks show in their SMART information:Formatted with type 2 protectionYou will need to remove this to get them usable. Should be able to google the steps required
September 6, 2025Sep 6 Author 56 minutes ago, itimpi said:Several of your disks show in their SMART information:Formatted with type 2 protectionYou will need to remove this to get them usable. Should be able to google the steps requiredInteresting. I will try it but I found that the seagate disk also has the protection but they works well. Strange.
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