Sure, here are the settings. My apologies for having not posted these sooner, my bad sir.
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Backup Operation Mode: Normal Backup
Create Backup Log File
Use Compressed Transfer Method
Ignore Errors and Proceed with Backup
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Some other things that might be worth noting:
Array 1 on both source and destination are Encrypted (via the encrypted setting on the Terastation). The backup encryption option is -NOT- selected though, only the arrays themselves.
We're goign from a R1-mirror to a R1-mirror...
We have APC UPS's connected to the devices with Enabled Status and Normal status.
HDD Spindown is enabled on both devices. Both are running 1.04 firmware.
Looking at one of the systems, the 2 drives making up the mirror are WD10EADS (came w/ the systems, have not replaced or added anything).
The NIC frame size is: 1,518 bytes(Default) for both devices.
We've tried connected to the same Cisco 4948 (GigE) switch, and also to the same WRT600N (Linksys wifi + wired GigE, both on the GigE) with almost identical results.
Again, appreciate your help w/ this sir! :)