Hi my node is syncing really slowly I have the datadir in an external hard drive connected through usb. Says the data rate for this seagate 12TB is 6Gb/s but the syncing is slow in comparison to when I have synced nodes in the past with internal nvme drives but 2TB is low so I am moving up to a larger hard drive and went with the external.

Any thoughts or someone who experienced similar? Even when communicating with RPC it is slower than normal I thought maybe it was because it was syncing but I am beginning to question it. Thanks for whatever input.

Also my internet is 1gbps upload download and it is connected through ethernet did a speed test to verify.

1 Answer 1


Hard disk drives have been known to sync much slower than SSDs due to their slower read/write speed and higher latency. Even a SATA (non-NVMe) SSD will do a much better job. This also applies to RPC calls that need to read from the disk.

6 Gb/s (768 MB/s) is just the theoretical limit of the interface your drive is connected through, no hard disk drive can actually read or write at this speed.

  • ahh damn thats kind of what I was starting to realize oh well, thanks Commented Apr 29, 2023 at 22:07
  • also if have any memory recommendations seems hard to find larger SSDs like 8TB+ that aren't insanely expensive am thinking about combining nvme's somehow Commented Apr 29, 2023 at 22:43
  • Have you considered combining a HDD with a smaller SSD for optional fast storage? The Bitcoin blockchain is currently a little over 500 GB, so even just a 1 TB drive will last you for some time. Commented Apr 29, 2023 at 22:53
  • No but i will, I ran out of space before thats why I was trying the HDD but I might have messed up the configuration somehow or double synced somehow Commented Apr 29, 2023 at 23:02
  • 2
    Increasing the database cache can dramatically speed up synchronization, especially on disks with slow I/O like spinning ones. Commented Apr 30, 2023 at 8:28

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