today, on my Synology DS209, I swapped my two (different) 500GiB drivers (one WD and one Seagate) to 2x Samsung EcoGreen F3 2000GB, SATA II (HD203WI)
After almost 9 hours "checking parity consistency." was completed without errors. Then I checked the SMART values. Both almost equal besides one value:
Disk 1 has Raw_Read_Error_Rate like value:100, worst: 100, threshold: 51, status: ok, raw data: 31
Disk 2 has Raw_Read_Error_Rate like value:100, worst: 100, threshold: 51, status: ok, raw data: 0
I really did not find any useful information on the web yet. My Seagate had very high Raw_Read_Error_Rate, my WD did not, my Seagate had its firmware fixed, the WD was a replacement for a 320 GiB WD that actually broke! Both ran "mostly" normal, only once the Raid1 broke and had to be rebuild (no idea why though, maybe because of different disks).Kindle Wireless Reading Device Electronic Book Reader
Now they are the same model almost the same serial number (like the last 2 parts of the serial number only differ on 2 digits) - am I in danger of a broken Raid 1 soon? How can I interpret the values?
King regards, and Synology: keep up the good work, much better NAS than the Thecus I had 2 years ago (using the DS209 for 1 year now)