Hi there, perhaps you can help me with an issue I'm having.

I'm using the incremental migration process going from 8.6 to 8.8.12

Backup went well on the source server, only took 4.5 hours to backup 1.5 TB of data which was compressed down to 750GB. I rsync'd over the 750GB of data to a new Azure Ubuntu 16.04 VM (F4s_v2) with 4 CPUs, 8GB of memory, 1 30GB Premium SSD OS DISK, and 1 Premium SSD 3TB Data Disk (this is the disk where the Zimbra store AND the Rsync'd data from the source server reside).

I'm now 24 hours into the restore and only 78/307 mailboxes have been imported, it seems to be running extremely slow compared to the initial backup.

Server load is roughly 2.2 with 4 CPUs, so right around 50% utilization.

Below is an output of iostat -x 10

avg-cpu: %user %nice %system %iowait %steal %idle
12.23 0.00 1.38 18.24 0.00 68.15

Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
loop0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
sda 0.00 64.40 1.20 52.50 4.80 4948.00 184.46 0.22 10.44 0.67 10.67 1.30 7.00
sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
sdc 0.30 49.20 180.70 21.30 3487.20 4755.20 81.61 0.51 4.88 3.30 18.23 1.14 23.08
dm-0 0.00 0.00 180.90 64.40 3463.20 4755.20 67.01 0.94 3.86 3.30 5.43 2.12 51.96

ZeXtras Suite Version: 2.16.1
Zal Version: 2.6.1
Zimbra version: 8.8.12_GA_3807 20190606081638 20190606-0838 FOSS