Will work for reads but how does it handle writes to protect dirty write down data if not mirrored for writes?
1080346
The SSD portion of the drive is not a cache. It is static. What is written to the SSD portion is retained even when the power is off. The 64MB cache works on this drive just as it works on traditional hard drives. I've owned one of these drives for nearly two years. It is worth every penny. Just as it says, over time, it becomes faster as it reorganizes the most used software (including the OS) to the SSD.
135682
What happens if it "fails"? Did I get a bad drive?I made the mistake of setting the security to "overwrite with zeros" it ran for 11 hours then failed.Now erasing with "Mac OS Extended (Journaled)" doesn't work.
2146737
Just had a report that a new Macbook Pro with Mavericks saw it as read only. Was quick formatted with NTFS/4096 just minutes earlier. Works fine in Win 8.1.
717027
Yes, if the disk is still good, it can be overwritten as often as you need to. Just delete what you don't want saved. -fred
1906409
We're having a similar problem. It keeps telling us it is "Write-Protected." Tried reformatting several times under different OS's and same problem.
10870
Yes it stores what you write in the memory until you transfer the saved data to the computer
1135080
This device is a writer, not a reader. If you are intending to read (as in, watch) BluRays, this isn't the device for you. If, however, what you intend to do is backup your data files to BluRay format, you want this. I cannot provide the actual write speed data for this device, but on USB 3, my experience is that it is fairly fast, determined of course by the amount and type of data you are writing.
1012543
I am pretty sure it would, as long as the OS itself supports the raid type completely. I formatted the drives using Mac OS' Disk Utility, but they were originally formatted as RAID 0, and my computer seemed happy with that configuration even if it wasn't what I wanted and was probably done with a different version of OSX. You should probably check that the older mac does support mirrored RAID devices before buying, just to be sure.
475147
If you buy cheap externals like I did yes but it will also force your RAID into read only. If you spend the extra on NAS drives then you're fine. It's not the enclosure that dictates that but the firmware on the drives themselves.
1813862
It does not spin the drives down. However, you should be able to set your OS to spin down drives on inactivity. It probably wouldn't be a good idea for the device to be able to do this independently of the computer.
1481973
Yes, however it runs at half speed. I get 40mb/s instead of 80mb/s write speed. Read speed is okay but there are intermittent drops in speed
1706931
It most definitely will... be careful not to switch the drive off whilst it's reading/writing, though...
1144783
that's what i want to know myself before purchasing it ............ nobody has commneted on the dual layer write capability - i am surprised..
2254188
Not as a standard option, the connections are but drives are not, if you are willing to access the Linus O/S then here is a link to consider:http://mybookworld.wikidot.com/encrypted-filesystem
2143545
Haven't heard of this before. I use a 3rd party reader and haven't had any problems, been using it with my 1000x 32gb as well as 800x 32gb.
371473
Ya know I haven't tested it. I would imagine it does so if there is an event that happens definatly pull the record off of the mem card and save it to your computer.
982950
I'm using Linux (with BTRFS which provides software raid-like features) but here are likely relevant numbers: Read performance via raid tends to be as fast as the hardware can push data. Writes may take longer as you have to write each copy per raid level. Mirrored data means writing two copies. More complicated RAID may require many reads to calculate parity and two writes for data + parity. I can get about 110 to 130 Megabytes per second read or write throughput via USB towards or from my ProBox. I don't know how Storage Spaces works internally, but you likely near full read performance (120 MBps) vs halved write performance (60 MBps). I'm using Linux (with BTRFS which provides software raid-like features) but here are likely relevant numbers: Read performance via raid tends to be as fast as the hardware can push data. Writes may take longer as you have to write each copy per raid level. Mirrored data means writing two copies. More complicated RAID may require many reads to calculate parity and two writes for data + parity. I can get about 110 to 130 Megabytes per second read or write throughput via USB towards or from my ProBox. I don't know how Storage Spaces works internally, but you likely near full read performance... » Read More I'm using Linux (with BTRFS which provides software raid-like features) but here are likely relevant numbers: Read performance via raid tends to be as fast as the hardware can push data. Writes may take longer as you have to write each copy per raid level. Mirrored data means writing two copies. More complicated RAID may require many reads to calculate parity and two writes for data + parity. I can get about 110 to 130 Megabytes per second read or write throughput via USB towards or from my ProBox. I don't know how Storage Spaces works internally, but you likely near full read performance (120 MBps) vs halved write performance (60 MBps). « Show Less