I just analyzed the USB drive and it seems that the backup folder files have some fragmentation, but to me (as a novice) it doesn't look that alarming.
One 64Gb backup file is stored in 126 fragments.
Another 76GB backup file (B2D000009.bkf) in 53 fragments.
I have seen that large file sizes are discouraged sometimes, but I have seen this mostly with respect to NAT drives. This is USB. I think I have set the maximun file size to 250 GB since that's about what would fit on the drive. Is this considered okay?
Fragmentation report:
Volume BACKUPHD01 (F):
Volume size=233 GB
Cluster size=4 KB
Used space=115 GB
Free space=118 GB
Percent free space=50 %
Volume fragmentation
Total fragmentation=47 %
File fragmentation=95 %
Free space fragmentation=0 %
File fragmentation
Total files=15,332
Average file size=10,735 KB
Total fragmented files=5
Total excess fragments=280
Average fragments per file=1.01
Pagefile fragmentation
Pagefile size=0 bytes
Total fragments=0
Directory fragmentation
Total directories=1,072
Fragmented directories=111
Excess directory fragments=1,093
Master File Table (MFT) fragmentation
Total MFT size=16,450 KB
MFT record count=16,421
Percent MFT in use=99 %
Total MFT fragments=2