Readynas Duo and WD2003FZEX compatibility

Firmware was the latest available for my device. Initialization and Sync with new drive was successful and only took about 5 hours to complete with 925 GB of data even though RAIDiator initially estimated 17-21 hours.

The new 2TB drive seems to continuously be running about 10 degrees F hotter than the older drive since insertion. Also there seems to be more noise, not fan noise but like small clock like platter seeking?? Not sure how to describe. I'm kind of a newb with all of this. Ive had other drives external and internal that I could tell they were failing and were making noises prior to doing so but I don't think this is the same thing. Maybe there is some indexing still going on after almost a full day?? I previously did not have the drives set to spin down after inactivity but since I wont be accessing the information contained on them very often at all I thought I would go ahead and do so. Not sure about benefits over continuously spinning in this situation.
I will wait a few weeks to replace the older 1 TB with the other 2 TB for the added expansion to make sure I wont end up having both of the drives fail.

Thanks all for reading and any info you care to share.

Here are the stats for my current drives:

Old 1 TB WD that was still running fine

Model: WDC WD10EADS-00L5B1
Serial: WD-WCAU47021298
Firmware: 01.01A01
SMART Attribute
Raw Read Error Rate 0
Spin Up Time 6850
Start Stop Count 243
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 22353
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 51
Power-Off Retract Count 8
Load Cycle Count 243
Temperature Celsius 39
Reallocated Event Count 0
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 0
ATA Error Count 0

Extended Attribute
Hot-add events 0
Hot-remove events 0
Lp stat events 0
Power glitches 0
Hard disk resets 0
Retries 0
Repaired sectors 0


And the new 2 TB: Already showing 4 Lp stat events within 20 hours :/ I read elsewhere I could ignore them but not sure.

SMART Information for Disk 2

Model: WDC WD2003FZEX-00Z4SA0
Serial: WD-WMC130056271
Firmware: 01.01A01
SMART Attribute
Raw Read Error Rate 0
Spin Up Time 0
Start Stop Count 3
Reallocated Sector Count 0
Seek Error Rate 0
Power On Hours 20
Spin Retry Count 0
Calibration Retry Count 0
Power Cycle Count 3
Power-Off Retract Count 2
Load Cycle Count 0
Temperature Celsius 44
Reallocated Event Count 0
Current Pending Sector 0
Offline Uncorrectable 0
UDMA CRC Error Count 0
Multi Zone Error Rate 0
ATA Error Count 0

Extended Attribute
Hot-add events 0
Hot-remove events 0
Lp stat events 4
Power glitches 0
Hard disk resets 0
Retries 0
Repaired sectors 0