On Tuesday, July 01, 2014 11:06:59 AM Helmut Jarausch wrote: > On 07/01/2014 10:58:45 AM, Dale wrote: > > Helmut Jarausch wrote: > > > On 07/01/2014 10:30:44 AM, Dale wrote: > > >> I been wanting to get me something external but hadn't got around > > > > to > > > > >> looking yet. I didn't know they have a SATA version. I plan to > > > > avoid > > > > >> USB if I can. From my understanding, eSATA can be hotplugged and > > > > I have > > > > >> a couple of those connections. > > > > > > I 'believe' that eSATA is dead - just look how few products are > > > available. > > > I have 3 USB-3 drives which are very fast (more than 100 MB/sec) and > > > if your motherboard doesn't have an USB-3 adapter, yet, it's very > > > > cheap. > > > > > Helmut > > > > I do have a few USB3 connectors. I just figured USB would be a good > > bit > > slower. Plus, can USB power a 3.5" hard drive nowadays? > > Probably not. All of my external USB3 disks have a separate power > supply.
I only know of 2.5" USB-drivers that are powered via the same USB-cable. Never seen 3.5" ones that are USB-powered. I use 2.5" drives for my backups, as they are designed for laptop use, I have the feeling they are a bit more robust when it comes to accidental bumps. > > root@fireball / # hdparm -tT /dev/sdb > > > > /dev/sdb: > > Timing cached reads: 6604 MB in 2.00 seconds = 3303.39 MB/sec > > Timing buffered disk reads: 542 MB in 3.01 seconds = 180.33 MB/sec > > > > root@fireball / # > > Try a real life example like dd. I have seen the above mentioned speed > on disks with a file system on it which does limit the speed anyway. +1 -- Joost
