Your business might use a Redundant Array of Inexpensive Disks (RAID) to store data across multiple drives for increased security. RAID links two or more disks to create a storage device with high capacity, low cost and efficient performance. RAID 0 + 1 is one such system. Business owners and individuals often believe if they have a RAID, their data are secure because they are reproduced in more than one location. However, all RAID systems are vulnerable to failure and sometimes need the services of a data recovery professional.
Understanding RAID 0 + 1
RAID systems use a variety of techniques to transfer data to disks. With striping, data maps across physical drives in sequence across the array. Mirroring creates an exact duplicate on corresponding drives, so it takes up twice as much space.
RAID 0 + 1 is sometimes referred to as a mirror of stripes. It typically needs at least four disks. When data transfers, disks inside groups are striped, but groups mirror each other. RAID 0 + 1 has similar performance and storage capacity to RAID 10, but lower fault tolerance.
Signs of Drive Failure
RAID 0 + 1 can fail for a number of reasons. When a system is used around the clock for years, components eventually wear out. Sometimes employees drop or jar equipment and the impact causes internal damage. Power surges and storms can create internal damage. Electronics generate heat, and poor ventilation can cause them to wear out faster than expected. Viruses, worms or malware can damage directory structures, files and registries.
If you notice any of the following from your RAID system, shut it down and contact an expert:
- Clicking sounds that signal hard drive damage
- Error messages that state your computer cannot find the operating system
- At startup, your computer cannot find the hard drive
- File access is extremely slow, signaling potential data corruption
- An inserted USB drive cannot be recognized
Why You Shouldn’t Attempt Recovery Yourself
Most of the time, data can still be retrieved when systems fail. Permanent data loss occurs when users try to fix a problem using incorrect methods.
Users sometimes search online and find downloadable software or free tools, but for most organizations those solutions just make things worse. RAID is made of several disks that work in groups, saving data in multiple locations according to a set of rules specific to each system. Installing the wrong software or attempting recovery could permanently overwrite the mission-critical data you’re trying to save.
If you experience system failure, Flashback Data offers a no-data, no-fee guarantee. We’ll evaluate your media at no cost, so if the price is more than you are comfortable with or your data is completely lost, it won’t cost you a thing. When you mail it to us or drop it off at one of our locations, we’ll give you a firm quote and wait for approval before we proceed with repairs. Get your data back on your timetable and stay updated every step of the way. Contact one of our experts to find out more.