For a PC... 2 hours of customer support to get it recognized
Amazon Customer, Amazon
5 June 2012
Summary: I bought two of these. One for my computer at home and one for my office. I tried to install the first one on my desktop home office machine. I am a fairly savvy user, as I teach applications at the collegiate level. I put in the CD, as directed, the drive was not connected.
Summary: I have owned this for about a year now and use it to back up movie and music files. I use it on with a Mac Mini and connect via firewire. Usually speed is not an issue with me, but this thing is beyond slow. Right now I am backing up 1.57 TB of files...and it has been running for 24 hours.
Pros: Simplified Raid, Firewire and eSATA, reliable
Cons: Slower than a crippled snail trapped in a tarpit. Generates heat even when sitting idle.
Summary: This unit has a habit of "ejecting" itself (spontaneous device removal) even when I'm using it. I could be in middle of a data transfer and the drive disappears from the desktop and a dialog box pops up telling me that I have improperly disconnected my device.
Summary: Pros: 1. looks sharp, great price, RAID capable. 2. easy setup over Firewire 800, device powers up automatically when connected to MacBookPro over FW800. Easy to set up RAID1 using the WD Drive Manager (on the install CD), and partition the drive using Disk Utility in Mac OS 10.6.7 (Snow Leopard)...
Western Digital My Book Does NOT Fully Support ESATA
11 March 2011
Summary: Beware - The Western Digital My Book software fully supports the RAID configurations for USB. BUT, esata is not supported. This means that if you are using esata in a mirrored configuration and a drive was to go bad you would not be warned that the redundancy was compromised. Regards,
Summary: I like the idea of this device a lot. 4 TB on an esata or USB connection is a great idea. However, my experience was problematic. On one of my computers, the device got scrambled and it only made 2 TB available from then on for any computer.
Good drive, but RAID software ate data on another drive
Brian Turner "is-tech", Amazon
6 February 2010
Summary: The drive itself works fine. I have issues with the WD driver software that came bundled with the drive. The RAID setup on this drive is all software. I installed the WD driver, and then configured the drive to RAID 1. Suddenly in my finder, I had two drives labeled MyBook.
Summary: RAID 1 should allow (in theory) quick data capture from the drive that is still working, or a rebuild with a new drive. My previous experience with a WHS was that I could simply pull the dead drive, put in a new clean drive, and keep going. Not so with this one.