Macintosh OS-X has included UNIX like information that allows Macintosh to be much more extensible now. Combined with Apples commitment to producing cost effective X-RAID units have all combined to where many people are using and relying on Macintosh for high end mission critical applications. This is in no place more evident than in the fact that Oracle is endorsing Macintosh with X-RAID storage running RAID 10 as a foundation of choice for running their applications and database. Oracles endorsement is no doubt in a large part due to the fact that everything in the Macintosh system is really highly optimized. From the Hierarchical File System (HFS) and its Journaling counterpart (HFS+), to the proprietary algorithms used by the X-RAID controllers and enclosures, and even in the request RAID 10 type.
Every part is build for speed and high volume access to data structures. Ironically, it is this optimization that can add so many issues to any recovery attempts. The HFS/+ file system is structured, as its name implies, is hierarchical and as such it allows for rapid access of groups of correlated data. This is good if everything is working, but when it tops and there is damage in part of the string (called a tree) all the branches of data past the point of damage are affected. Another, peculiarity of the HFS/+ file system is that they use inods. Inods are structures that act as markers for data elements in the trees. Unfortunately, when a file is deleted the inods can also be affected. Deleted inods are considered to be impossible to recover. This means that if the inods are damaged data recovery companies will return partial data files with no names or attributes. RAID Recovery Labs has developed the ability to recover to recover these inods enabling you to get much more data back than you would have with any other data recovery company in the world.
Apple X-RAID is a cost effective solution for storage and running multiple high capacity SATA drives has proven the ability to keep up with some of the most demanding applications being run. Not just in the art world we are finding these in oil and gas, finance, medicine, and many other fields. These enclosures are not even limited to Macintosh but also being used on other computers as well. The algorithms for the Apple X-RAID are extremely complex. Again optimized for speed the Apple X-RAID has tweaking that creates problems for many data recovery companies. RAID Recovery Labs has developed proprietary methods and software specifically for dealing with the Apple X-RAID systems including the RAID 10 aspects that are often promoted. Many companies including Oracle are promoting the use of RAID 10 (a striped RAID that is mirrored to another striped RAID). They are doing this because they want the speed of a striped array without the overhead of calculating and writing parity. The assumption is made that with another set of disks the array can still be rebuilt if one of the disks fails. Which is true, but where it all falls down is that this is a complex operation that can go wrong in many areas. Also, there is a potential that the wrong two disks will go down. In ether case you want to call RAID Recovery Labs because we have experience in all of these complex situations.
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