This hard drive will be put in a DVR that records video from a few IP cameras. I found both of the following drives for about $80 each and would like to know which one would work the best.
2TB Caviar Green 5400RPM SATA 3Gb/s Intellipower 64 MB Cache (WD20EARS)
1.5TB Seagate Barracuda 7200RPM SATA 3Gb/s 32MB cache (ST31500341AS)?
Does the extra cache make up for the slower spin speed?
Supposing the capacities were the same. what's more important, faster RPM or bigger cache?