July 13, 20223 yr I was getting drive errors. So I replaced the bad drive, but I'm still getting extremely slow parity sync speeds (around 1mb/sec). I can't figure out why it's so slow. nas-diagnostics-20220713-1302.zip
July 13, 20223 yr Community Expert Just now, Nov845 said: replaced the bad drive How do you know the drive was bad? Bad connections are much more common than bad drives.
July 13, 20223 yr Author 1 minute ago, trurl said: How do you know the drive was bad? Bad connections are much more common than bad drives. It was getting tens of thousands of errors in the Error column on the Main page.
July 13, 20223 yr Community Expert Two controllers have (or are connected to) SATA port multipliers, that's very bad for performance and reliability, lots of ATA errors on the log.
July 13, 20223 yr Community Expert 2 minutes ago, trurl said: Bad connections are much more common than bad drives. In fact it looks like connection problems on multiple disks, probably controller. 04:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9215 PCIe 2.0 x1 4-port SATA 6 Gb/s Controller [1b4b:9215] (rev 11) Subsystem: Marvell Technology Group Ltd. 88SE9215 PCIe 2.0 x1 4-port SATA 6 Gb/s Controller [1b4b:9215] Kernel driver in use: ahci Kernel modules: ahci 06:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9215 PCIe 2.0 x1 4-port SATA 6 Gb/s Controller [1b4b:9215] (rev 11) Subsystem: Marvell Technology Group Ltd. 88SE9215 PCIe 2.0 x1 4-port SATA 6 Gb/s Controller [1b4b:9215] Kernel driver in use: ahci Kernel modules: ahci Marvell controllers are NOT recommended
July 13, 20223 yr Author 10 minutes ago, trurl said: In fact it looks like connection problems on multiple disks, probably controller. 04:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9215 PCIe 2.0 x1 4-port SATA 6 Gb/s Controller [1b4b:9215] (rev 11) Subsystem: Marvell Technology Group Ltd. 88SE9215 PCIe 2.0 x1 4-port SATA 6 Gb/s Controller [1b4b:9215] Kernel driver in use: ahci Kernel modules: ahci 06:00.0 SATA controller [0106]: Marvell Technology Group Ltd. 88SE9215 PCIe 2.0 x1 4-port SATA 6 Gb/s Controller [1b4b:9215] (rev 11) Subsystem: Marvell Technology Group Ltd. 88SE9215 PCIe 2.0 x1 4-port SATA 6 Gb/s Controller [1b4b:9215] Kernel driver in use: ahci Kernel modules: ahci Marvell controllers are NOT recommended What controller do you recommend?
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.