- I have a 2.5 inch SATA HDD hooked up to a UGREEN USB 3 to SATA connector.
- The HDD is formatted as NTFS.
- On my Windows PC I get write speeds of about 80 MBytes/s.
- I am running OMV on the Pi 4.
- On Raspberry Pi 4 4GB on the USB 3 slow over gigabit LAN as a SMB share I get 34 MBytes/s max.
Why is this? What could be the bottleneck?
[ 0.493412] of_cfs_init [ 0.493507] of_cfs_init: OK [ 0.494102] Waiting for root device PARTUUID=738a4d67-02... [ 0.540285] random: fast init done [ 0.593604] mmc0: new ultra high speed DDR50 SDHC card at address aaaa [ 0.594126] mmc1: new high speed SDIO card at address 0001 [ 0.595505] mmcblk0: mmc0:aaaa SL08G 7.40 GiB [ 0.596907] mmcblk0: p1 p2 [ 0.615685] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. O pts: (null) [ 0.615755] VFS: Mounted root (ext4 filesystem) readonly on device 179:2. [ 0.620316] devtmpfs: mounted [ 0.627977] Freeing unused kernel memory: 2048K [ 0.668531] Run /sbin/init as init process [ 0.758323] usb 1-1: new high-speed USB device number 2 using xhci_hcd [ 0.940957] usb 1-1: New USB device found, idVendor=2109, idProduct=3431, bcd Device= 4.21 [ 0.940997] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [ 0.941023] usb 1-1: Product: USB2.0 Hub [ 0.942790] hub 1-1:1.0: USB hub found [ 0.943127] hub 1-1:1.0: 4 ports detected [ 1.081126] systemd: System time before build time, advancing clock. [ 1.088731] usb 2-1: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd [ 1.119705] usb 2-1: New USB device found, idVendor=174c, idProduct=55aa, bcd Device= 1.00 [ 1.119743] usb 2-1: New USB device strings: Mfr=2, Product=3, SerialNumber=1 [ 1.119771] usb 2-1: Product: AS2115 [ 1.119794] usb 2-1: Manufacturer: ASMedia [ 1.119817] usb 2-1: SerialNumber: 12345678984B [ 1.122847] usb 2-1: UAS is blacklisted for this device, using usb-storage in stead [ 1.123000] usb 2-1: UAS is blacklisted for this device, using usb-storage in stead [ 1.123033] usb-storage 2-1:1.0: USB Mass Storage device detected [ 1.123478] usb-storage 2-1:1.0: Quirks match for vid 174c pid 55aa: c00000 [ 1.123625] scsi host0: usb-storage 2-1:1.0 [ 1.175708] NET: Registered protocol family 10 [ 1.176927] Segment Routing with IPv6 [ 1.207978] systemd: systemd 241 running in system mode. (+PAM +AUDIT +SEL INUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL + XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybr id) [ 1.208855] systemd: Detected architecture arm.