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BeyondRAID™ Technology
Every Drobo product comes with the revolutionary BeyondRAID storage technology — the next generation of redundant disk protection. BeyondRAID not only keeps your data safe, but will also increase uptime and availability. BeyondRAID technology offers several improvements over traditional RAID-based storage systems, including the flexibility to replace failed disks and increase capacity all without costly downtime.
Key features of BeyondRAID include:
 Data protection against hard disk failure
Instant capacity expansion without downtime
Self-management
Automatic healing
File and Operating System Agnostic
Drobo and its underlying BeyondRAID technology currently support the Windows, Mac and Linux* platforms, with file system support for NTFS, HFS+, EXT3 and FAT32. Since Drobo is a block level system, it easily adapts to almost any environment.
Mixed Drive Capacity Utilization
Grow storage to meet your data capacity needs with minimal effort. To add capacity, simply insert a new hard disk or replace the smallest disk with a larger one, even when all four disk bays are full. Unlike traditional RAID systems, the BeyondRAID technology enables IT managers to efficiently mix and match disk brands, capacities, and speeds. This allows for continuous expansion as disk capacities grow. Now, expansion is automatic, instantaneous and access to data is always maintained.
To find out exactly how much free capacity you'll have with your choice of disk capacities, try out our interactive capacity calculator.
Redundant Safety
Drobo can ensure your data is safe even if a hard disk fails. You’ll feel safer knowing that if disks do fail, Drobo automatically enters a state of self-healing wherein it relays out your data across the remaining healthy disks and sectors.
Proportional Rebuild Times
The time it takes Drobo to rebuild data after a drive failure or removal is proportional to the amount of data stored in the pool — meaning the less capacity that is used, even on a 2TB disk, the shorter your rebuild times will be. This is superior to traditional RAID, which lacks proportional rebuild times, and is forced relay out every drive block even if it does not contain user data.
Since Drobo is “Data Aware”, it tracks where data is on each disk, so it can differentiate between used and unused portions of disk. This expedites rebuild times and reduces your risk of losing data to an additional disk failure. In short, your data is safer on a Drobo.
Self-Healing
When Drobo detects a "bad" hard disk, it proactively advises you with a series of warnings ranging from a blinking red LED on its front panel, to pop-up alerts in Drobo Dashboard, to email alerts. What Drobo does next is exceptional. It enters a self-healing mode where it repairs around the bad sector or disk, and will work until it returns to the safest state possible. If Drobo has sufficient time and free capacity (indicated by all lights returning to a solid green state), it can even withstand additional hard disk failures — that's the power of self-healing.
Storage Virtualization
BeyondRAID was designed from the ground up to allow the storage capacity of the array to expand and contract. BeyondRAID makes this a simple process by utilizing a technology called “virtualization.” Virtualization provides a layer of abstraction between the data requested by the file system and the physical location of that data on the disk drives. A given piece of data can be located on any drive, and on any physical location on that drive. This is what makes adding a drive to a Drobo so simple. The new drive just provides additional places to store data.
Virtualization is what enables BeyondRAID to effortlessly change the data arrangement on the drives, for example, changing data stored as a mirror into data stored as parity stripe, without interrupting the user access to data. Virtualization completely decouples the physical space available in the array from the space reported to the operating system. This is how BeyondRAID is able to eliminate the need to manually expand/contract the file system as more space becomes available or is removed.
Thin Provisioning
Thin provisioning is a technical term that describes how the BeyondRAID technology communicates with your operating system. BeyondRAID communicates with your OS about how much disk space you have, up to 16TB (this varies with older operating and file systems). Specifying a larger amount of storage than is physically available allows you to grow into the volume without having to reformat or migrate your data in order to add capacity. BeyondRAID automatically also reclaims space as you delete files.
Self-Managing
Drobo is highly automated storage. There are no complex configuration screens, DIP switches, confounding choices, web consoles or other complications that prevent so many other storage devices from working out of the box.
Drive Reordering
One long-standing requirement inherent in traditional RAID-based systems was that if for some reason you needed to remove the drives, you’d have to replace the drives in the exact same order. When you remove your disks from Drobo, you can put them back in any order you like.
* Linux support currently in Beta.
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Meet the new primary and backup storage solution that’s perfect for creative professionals and small businesses with “set it and forget it” storage needs. The safe, expandable Drobo® S offers blazingly fast eSATA, and the best data storage experience ever. In addition to eSATA, Drobo S features enhanced FireWire 800 performance and USB 2.0 connectivity. It is a self-managing, self-healing solution ideal for safely storing large files and rapidly growing data.
Up to 5 Drives of Instant Expansion to 10TB and Beyond
With the self-healing technology now incorporated into Drobo S, your data is safer than ever. Even when sitting idle, the Drobo will continually examine the blocks and sectors on every disk, flagging questionable areas. This preemptive “scrubbing” helps ensure your data is being written only to the healthy areas of your drives, and that your data is always safe. And if a drive fails, Drobo S will strive to keep your data in the safest state possible, utilizing the available space on the remaining healthy drives.
The data that we use is extremely critical. To make sure that that data is maintained, kept confidential, and that we don’t have it at any risk of loss is extremely important. 
Drobo S
Accoustics
company