The Drobo USB 3.0 4-Bay Storage Array (DDR3A21) has BeyondRAID. I don't really know what that means. Does the unit come with a hardware RAID controller? Can it mirror two drives to the other two drives so that the data is protected in case one or two...
1806705
The Drobo has a dashboard that you install from there website. For the Drobo's you have to have a least two SATA drives to work, so if one drive fails (there will be a red light) pop out the bad drive and replace with a new drive Drobo will do the rest. (also you can still use the files while it recovers the drive). The unit does have its on power supply. No other hardware need unless you get Drobo shares.(but you can setup a share folder on you PC) Yes, I have 4TB drive in mine. I heard you can use larger but not sure. You can use any brand, any size hard drive. Yes it can run all the time. They make a 5 bay unit now or you can connect two Drobo together. Just make sure it is the newer Drobo for the 3.0 USB connect.
1303012
If the 2 drives are individual and not set up in a raid, they will be read by this enclosure. Personally I have discontinued external enclosures and gone to bare drives with 2 of the dual docks. Cheaper and much easier stacking bare drives than a bunch of external enclosures cabled up. You can get plastic enclosures to store the hard drives.
1419019
Its not that easy, If you had this enclosure already, yes, just drop in your disks and as long as you have not made any changes to the software it will be just like before. But based on what you are saying, you had a 4 Disk array, and not a 5 disk array as shown here. There is a way to salvage your files, you can create or set this device to raid 5 mode if that is what you had, and then put your disks in and let it rebuild the array, but only if the technology behind what you had is exactly the same as what this enclosure supports. With raid 5 you have to deal with parity bits, and not all raid 5 parities are created equal. But if you did not have a raid array configured on your old enclosure and each disks was treated as a single disk, then yes, you can make this work with no loss of files. If you could give a few more details, I may be able to tell you how to salvage your files. I had this enclosure, and my power went out, it was as simple as plugging in my disks and plugging it into my server. But I don't think you have the same situation. There are third party utilities that may help you to salvage your files either way. But I have had three of these units ever since the day they were first released, and that has been a few years. They even work great with Windows Server 2012 R2 and Windows 8.1. Very fast, says it only supports up to 2 GB Drives, but I'm running 3GB, 6GBs, 7200 RPM drives with no problem. But I don't use the built in raid, I use windows Storage Spaces found in Server 2012 R2, Windows 8 and above. I have this unit distributed across 2 Servers with 8 Hyper V machines on each one. One on eSata and one on USB 3.0. Can't tell the difference, just make sure you have a solid eSATA card or equivalent if you decide to purchase this, if not you will need to run USB 3.0 for the performance.
923997
RAID 1 will mirror your disks for backup/redundancy that you want. There are different levels of RAID. RAID 0 WONT do what you want. So make sure you setup RAID 1 for this.
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).
558270
RAID 0,1 and SHR (Synology Hybrid Raid). With only 2 drives you can't get 5.
579275
It supports RAID 0 with excellent performance. That is my current configuration. Note that there is no fault tolerance with RAID 0 so you need to regularly backup your data.
1267397
This is not a good choice for non-RAID. The Red drives are designed to stop re-trying bad sectors sooner than (for example) a comparable Green drive. This is great if you want the drive to continue operating while your RAID recovers the missing piece. If you don't have data redundancy, then you're more likely to lose data with a "NAS" drive.
2231875
It is RAID 0 which is what MSI calls "Super RAID 2" when they are using 3 SSD's in RAID 0. There is really no such thing as "RAID 2"
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]
923996
No. This card has no RAID functionality. You need to find a card that offers RAID 1, which is drive mirroring, to do what you're looking to do.
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.
2155404
There is no RAID inside this adapter. Some system boards have 'fake' RAID, but you have to go waaay back to get IDE RAID, now it's mostly SATA. Unlikely but possible to still find a card that does IDE RAID, PROMISE made some. As far as I know, the 'drives' (microSDs) enumerate as 0 and 1, a and b etc. to systems. No striping or mirroring going on without outside help. The slow and wear-prone media of most microSD just doesn't make good RAID sense anyway.
1366633
This model does not have RAID 0. Only the very top end model has tha(UX301-XH71T I think)--Edit: Apparently I was incorrect, as the person in the comment reply below said this model does in fact have Raid 0 (according to "Properties" of the 2 partitions, OS and DATA). There is no option in the BIOS to disable this, which is unfortunate. Although RAID 0 using SSDs is not nearly as dangerous for your data as with a normal hard-drive since a failure is so unlikely.
1563056
I had compatibility issues when I went to the 4TB, some of the 4TB's want work well with the older 3TB, make sure you check the firmware on your 3TB and 4TB if you need them to run JBOD and RAID should never be mixed. I had 3TB in this device and tried a newer 3TB with a different firmware / version. Didn't work. Never would see the full size of the disk.
700391
Hello fellow Transcend card user:First of all, I am not using my card in a RAID configuration. However, I do believe your assumption is correct. I have an ASUS MoBo and to access the installed RAID functionality of the MoBo, I have to attach the hard drives directly to a specific set of SATA III I/O ports. You may want to check your MoBo manual for such requirements. You may also want to pose this question to your Mobo manufacturer. Further, you may want to consider running your RAID configuration from a USB-3 and/or e-SATA external RAID enclosure. Hope this information can be of some help - Good luck. Hello fellow Transcend card user:First of all, I am not using my card in a RAID configuration. However, I do believe your assumption is correct. I have an ASUS MoBo and to access the installed RAID functionality of the MoBo, I have to attach the hard drives directly to a specific set of SATA III I/O ports. You may want to check your MoBo manual for such requirements. You may also want to pose this question to your Mobo manufacturer. Further, you may want to consider running your RAID configuration from a USB-3 and/or e-SATA external RAID enclosure. Hope this information can be of some... » Read More Hello fellow Transcend card user:First of all, I am not using my card in a RAID configuration. However, I do believe your assumption is correct. I have an ASUS MoBo and to access the installed RAID functionality of the MoBo, I have to attach the hard drives directly to a specific set of SATA III I/O ports. You may want to check your MoBo manual for such requirements. You may also want to pose this question to your Mobo manufacturer. Further, you may want to consider running your RAID configuration from a USB-3 and/or e-SATA external RAID enclosure. Hope this information can be of some help - Good luck. « Show Less
638151
Performance is more than adequate for me - main use is local backup of RAID drives (attached to 2 Apple iMacs) and iPad/iPhone in-house access to any of that data (Drobo is attached to Apple APE-AC). My primary objective was easy admin: adding & changing shares & permissions, mix & match various SATA drives types and sizes, data redundancy w/o true RAID, swap & add of HDs without any admin. my short list included Synology, but made the decision just on ease of admin. I am aware of some horror stories concerning data loss with Drobo, but I keep it on a UPS and it's just a backup for me.