will this one do two Raid 1's? it does Raid 0, and Raid 1, but will it do two mirrors? I presume so but want to know for sure?
1147738
I believe you can only do a software RAID 0 or 1, but this card is really NOT meant for that! It is the best way to give your ssd a sata 6.0 connection on an older motherboard. Also, you only want to connect ONE ssd to this card to get the maximum speed!
2192906
2 - 2TB drives. It is RAID1 (mirrored) so you get 2TB usable. If you add a third or forth drives then it converts to RAID5 and cannot be downgraded after the conversion.
542428
RAID is a method of grouping 2 or more disks to function as one. There are different types of RAID that serve different purposes. More info can be found here: http://www.thegeekstuff.com/2010/08/raid-levels-tutorial/No, this does not provide RAID functionality. You need a RAID controller card or a motherboard that was this built in. This simply provides an easy means of allowing you to swap hard drives in and out of the computer...usually for use in RAID setups since most support "hot" swapping.This only fits 2.5" drives.
923995
Jim, this card supports raid 0 and 1 and JOB, but I will concede no raid 1, as I could never get it to work, so in the end you are right.
327454
That's the way it's designed to work. Otherwise, there's no point to having a RAID array and you might as well sync two hard drives. I own this enclosure and like it very much but I've not experienced a hard drive failure yet so I have no personal experience. Apparently, Mr. Morrissey does. I do not think the drives necessarily have to be identical, but the RAID array will end up being the size of the smaller hard drive.I would also note that the StarTech enclosure does not support RAID 5 (only 0 and 1) so Showman's RAID 5 could not have been in this StarTech enclosure.
2232202
What you're describing isn't RAID, which by definition uses more than one disk. You're talking about disk mirroring, and even that makes little sense with a single physical drive. The whole point of both methods is to maintain data access when an entire physical drive fails.That said, you could set up a meaningful disk-mirroring configuration using this device and 2 of the drives within it. You would access one of the drives, and your mirroring would automatically write identical data to both drives in near real time, which is one level of RAID.
1787152
Yes. RAID 0 will give you 4 GB of NAS storage with no protection. RAID 1 is with mirrored drives where if one drive fails you still have your data on the other drive. Only 2 GB of storage with RAID 1
1392671
Correct, RAID 1 (mirror) is a supported configuration for this model. Mine came pre-configured with 'Synology Hybrid Raid' volumes, which is a set of Synology optimizations to RAID 1 (mirror) to better support having HDD of different sizes.
178452
I have 5 of these drives in a Sans Digital RAID box configured as two 2TB RAID 1 drives with a hot standby replacement drive. I've been running almost two years with no problems. I chose the lower spin rate (5400RPM) to be more reliable. I use the RAID 1 drives for backup/archive of other computers.
506900
Hello Edward. You definitely can. In this case you should select SHR RAID type, so you can add the other disk later. I personally would recommend you to begin with both disk, because, with them you could use SHR or RAID 1 (mirror disks) so in case of failure of one of the disks all the information will be in the other one. This is one of the main features of a RAID system that makes it a better option than an external USB disk that you should use from the very beginning.Hope it helps.
138599
rbohl is right. RAID 1 will give you 2 disks that are mirrored or copied and in sync byte for byte. Please use hot swappable hard drives in RAID arrays., Seagate and Western Digital (called RED model) have disks made for NAS devices. I would go as far as looking at the website for "approved" hard disks for the NAS you purchased. If one hard drive fails, the second is the backup in a RAID 1 config. The Synology will rebuild itself once the bad hard drive is replaced with a new hard drive.
1170959
yes, RAID 0RAID 0 comprises striping (but neither parity nor mirroring). This level provides no data redundancy nor fault tolerance, but improves performance through parallelism of read and write operations across multiple drives. RAID 0 has no error detection mechanism, so the failure of one disk causes the loss of all data on the array.[9]
1787153
I agree with David, you can set it to Raid 0 for full storage space use. I prefer using Raid 1 for protection even though you drop the usable space in half. I like having my data replicated in case of failure.
2093493
Although I haven't done it with this particular array (I'm using it in RAID5), by the regular principals, it doesn't look good. If they were individual drives, absolutely not. If they are removed from another JBOD, they would have to be in the same order, and would depend on having the same firmware. Basically... I wouldn't try it with any array. What you're looking for is probably something with a port multiplier in it so that each drive is handled individually by your OS. Then you'd need a port-multiplier compatible eSATA card (or usb if you like slow drives).
2099753
i think proraid supports raid functionality, this is the one i have and i'm using raid 5the other one does not contain raid functionality and is just a straigt forward enclosure that will give you one volume per HD installed at least.
606995
It depends on the type of raid setup you use. There is a hybrid setup that makes use of all the drives and maximizes the space available. This way you can have different size drives. I accepted this as the default. I can't verify how it works though as all my drives are the same size. It's a bit slower than I would have liked also, but hey, it does the job.
2147309
When I first got it (about 9 months ago), I started with 1 hard drive and it worked fine. I added another drive in single disk mode and it's also working fine. Although I didn't set it up as RAID, I remember I had a choice to turn it into RAID. However, I don't remember if formatting both drives is required for RAID; it's not required for two drives in single disk mode. This was a few updates ago, so it might have changed, but I think you can still start off with one drive, add another drive in the future, and set them up as RAID.