Fozzie Posted December 13, 2020 Share Posted December 13, 2020 My server is running really slow and started a new parity check after reboot, when parity was good before. Can someone help. Please.tower-diagnostics-20201213-1213.zip Quote Link to comment
JorgeB Posted December 14, 2020 Share Posted December 14, 2020 Disk3 dropped offline: Dec 12 12:45:27 WattsTower kernel: usb 4-2: USB disconnect, device number 2 Dec 12 12:45:27 WattsTower kernel: sd 1:0:0:0: [sda] Synchronizing SCSI cache Dec 12 12:45:27 WattsTower kernel: print_req_error: I/O error, dev sda, sector 87851080 Dec 12 12:45:27 WattsTower kernel: md: disk3 read error, sector=87851016 Dec 12 12:45:27 WattsTower kernel: md: disk3 read error, sector=87851024 Dec 12 12:45:27 WattsTower kernel: md: disk3 read error, sector=87851032 Dec 12 12:45:27 WattsTower kernel: md: disk3 read error, sector=87851040 We don't recommend using USB for array devices, as they are known to drop a lot and bad at error handling. Quote Link to comment
Fozzie Posted December 14, 2020 Author Share Posted December 14, 2020 I understand, what do you suggest? Can I take them out and put into 2 other servers and save the information? I have 13 disks. Quote Link to comment
JorgeB Posted December 14, 2020 Share Posted December 14, 2020 11 minutes ago, Fozzie said: what do you suggest? Using onboard SATA ports + HBA if needed. 12 minutes ago, Fozzie said: Can I take them out and put into 2 other servers and save the information? Should be OK, but some USB enclosures create a custom partition or use a custom ID that might not be recognized by Unraid on a SATA port, it should still work with UD if needed. Quote Link to comment
Fozzie Posted December 14, 2020 Author Share Posted December 14, 2020 Sorry just learning this stuff what is HBA? This is the new motherboard I am planning on using. Does this help? 1 x PCI Express x16 slot, running at x16 (PCIEX16) * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot. 1 x PCI Express x16 slot, running at x4 (PCIEX4) * The PCIEX4 slot shares bandwidth with the SATA Express connector. When the SATA Express connector is populated, the PCIEX4 slot operates at up to x2 mode. 2 x PCI Express x1 slots (All of the PCI Express slots conform to PCI Express 3.0 standard.) 2 x PCI slots Quote Link to comment
itimpi Posted December 14, 2020 Share Posted December 14, 2020 Just now, Fozzie said: what is HBA HBA = Host Bus Adapter. Basically this is a way of attaching disks. It is typically for disk controllers that do not have built in RAID support. Quote Link to comment
Fozzie Posted December 14, 2020 Author Share Posted December 14, 2020 Syba 4-port SATA III PCIe 2.0 Controller Card. Some thing like this? Quote Link to comment
trurl Posted December 14, 2020 Share Posted December 14, 2020 2 minutes ago, Fozzie said: Syba 4-port SATA III PCIe 2.0 Controller Card. Some thing like this? Marvell controllers should be avoided. Quote Link to comment
Fozzie Posted December 14, 2020 Author Share Posted December 14, 2020 My case only holds 6 drives how would I increase drive space? Quote Link to comment
Fozzie Posted December 14, 2020 Author Share Posted December 14, 2020 Will pcie to esata card work? Quote Link to comment
trurl Posted December 14, 2020 Share Posted December 14, 2020 You can do eSATA or SAS to another enclosure but you need separate connections for each disk. Another way to increase capacity is to upsize disks. Quote Link to comment
Fozzie Posted December 14, 2020 Author Share Posted December 14, 2020 Not sure I understand what you mea when you say "separate connection for each disk" do you enclosure or disks inside enclosure? Quote Link to comment
trurl Posted December 14, 2020 Share Posted December 14, 2020 2 hours ago, Fozzie said: Not sure I understand what you mea when you say "separate connection for each disk" do you enclosure or disks inside enclosure? I mean from the main computer to each disk. SAS can give multiple connections on a single cable, but they are still separate connections. SATA is one port and one cable for each disk. The reason for this is because parity operations ideally happen in parallel. If all disks can't be accessed simultaneously then performance for things like parity checks and disk rebuilds will suffer greatly. 4 hours ago, trurl said: Another way to increase capacity is to upsize disks. I see from those diagnostics earlier that you still have a lot of free space currently. How many of those disks are using USB connections? Quote Link to comment
Fozzie Posted December 15, 2020 Author Share Posted December 15, 2020 All are on usb enclosure. I am just thinking about increasing the drives and connection to the motherboard. Quote Link to comment
trurl Posted December 15, 2020 Share Posted December 15, 2020 24 minutes ago, Fozzie said: All are on usb enclosure. How long does parity check take? Quote Link to comment
Fozzie Posted December 15, 2020 Author Share Posted December 15, 2020 Usually 5-7 days Quote Link to comment
trurl Posted December 15, 2020 Share Posted December 15, 2020 That's what happens when you don't have separate connections for each disk. Should be only one day or less for 10TB parity Quote Link to comment
Fozzie Posted December 15, 2020 Author Share Posted December 15, 2020 Ok, changing to new computer with 6 sata ports and have an IO CREST M.2 22x42 to SATA III 2 Ports Adapter Card on the way. That should be enough to hold all my drives. Once I upgrade to 10tb drives. Correct? Quote Link to comment
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