Hard Drive Performance - How do you really tell?
Posted on 2012-03-19
I build servers for video surveillance. The servers stream live video data to one drive (A), then a few times a day archive the data to a different drive (B). The specs call for a high performance model for drive A and a lower performance higher capacity drive for drive B.
I use Western Digital Drives so this is about their options. Is anyone able to summarize and answer the following:
1. Which is the higher performance drive and what benefits/drawback each will have in my particular use? (Storage size is not relevant)
RPM Buffer Interface Avg Latency Transfer Rate
WD2503ABYX 7200 64MB 3Gb/s 4.2ms 128MB/s
WD1500HLHX 10000 32MB 6Gb/s 3.0ms 145 or 128 – (not sure)
WD2003FYYS 7200 64MB 3Gb/s 4.2ms 138MB/s
2. Is Transfer rate the most important spec?
3. What does an A/V designation really offer over a ‘Black’ drive for example
4. How important are seek times & latency in my application?