I'm going to go with an internal hard drive as the majority of the enclosures I've found including the Antec MX-1 and the Thermaltake BlacX only support a 3 Gb/s transfer speed and I want to go with a 6 Gb/s hard drive unit and I'm also going with Western Digital as it's the OEM installed by DirecTV. The WD20EURS is actually very hard to find so I'm crossing it off the list. The WD20EARS only has a 3 gb/s transfer speed so I'm crossing it off as well. The WD20EARX does have a 6 Gb/s transfer speed but the rotational speed is only 5400 rpm so I'm probably going to dismiss it as well. So after much research and deliberation I'm leaning towards the WD Caviar Black WD2002FAEX. Does anyone know much about the WD2002FAEX? What I mean is whether or not the 6 Gb/s transfer speed and 7200 rpm rotational speed of the WD2002FAEX is noticeably faster, more responsive, and worth the extra money in this application than the 3 Gb/s transfer and 5400 rpm rotation of the WD20EARX. Does the transfer and rotational speed really matter in this comparison or am I just over analyzing it?
You are betting on length of a tail and color of ears while picking the 'horse'.
[Definitely not reading before posting .]
a) NO ONR DVR
is support 6 Gbps interface
7200 RPM is not a factor: 1 HD [channel] recording stream is ~1 MB/s, two - ~2 MB/s, OTA - ~2 MB/s; 5400 RPM drive has sustain R/W speed ~30-40-60 MB/s: ENOUGH !
c) no reasonable cache size [8-16-32-64 MB] will help for such stream, one or more.
The mentioned [many times
- AV type what support 24/7,
- require less time for internal regular recalibrations,
- taking less energy as possible, ie keep own temperature less then 120 F inside badly ventilated case,
- perhaps low noise, if you keep the DVR close to your ears.