Using MacBook Pro (late 2011) 2.4GHi7 w 16GB mem 750GB HD partitioned 430GB Mac (42GB avail)/ 231GB Win (31GB avail) Journaled HFS+;
running High Sierra v10.13.2 w Parallels Desktop 14 for Mac Pro v14.0.1
Using 2 Airport Time Capsules 4th Gen v7.6.9, 3TB ea formatted AFP (the one being used for backup through Time Machine reports 923GB free through Disk InventoryX app)
Time Capsules run under Airport Extreme 5th Gen v7.6.9.
Backups through Time Machine > Time Capsule are taking 6+ days (not sure of exact time; I'm having to cancel them).
Ran a few tests (under only MacOS; Windows not booted; Parallels not running); Wi-Fi turned off; Time Capsule connected to MBP via ethernet; running no other apps at time:
Test 1: dragged 1.0 GB app file from MBP HD to Time Capsule to check write rate RESULT: Took over 25 minutes (approx 0.7 MB/s)
Test 2: ran LAN_Speed Test to Time Capsule with 100MB packet size RESULT: 1.4 Mbps writing to TC, 1.7 Mbps reading from TC
Given the specs on the MBP and TC (1Gps ethernet port) the data transfer rates are excessively slow.
What can I do to fix this? I can't leave my MBP tethered via ethernet to the Time Capsule for over a week to do a backup (need to take it to work daily).