Archives - January, 2016

Data salvage or recovery refers to the process of retrieving and managing the information through the records from essentially either damaged or even corrupted and inaccessible the secondary storage your devices when it cannot be accessed through the normal way. Most of the time the data is being saved from Storage Media Devices such as the external or internal hard disks, solid-state drives, USB flash disks or memory sticks, storage tapes, Compact disks, Digital versatile disks, RAID, and other electronic storage devices. The recovery may be required due to the physical damage to the storage device or the logical damage to the device file system that thereby prevents it from being mounted by the host operating system.


Data Salvaging Tools

The main data salvaging tools basically are a wide range of data salvage software that is made available by the data salvaging companies. These can be accessed online for a fee or are in some cases offered for by the data salvaging companies and it is easy to download them and put them to use. There are also a couple of simple instructions that are made available to give directions to those users that may not be very well acquainted with the procedures of using the software. However, in cases where the damage to the data storage device is extreme, one may have to ship it to the data recovery company so that they employ the use of special machinery and procedures to be able to retrieve the data.

Data salvaging Process

One of the best data salvage techniques is to ensure that you have data already backed up on another storage device, be it on the same computer, or on a network server or even the Internet. Then the data recovery becomes a very simple copy procedure after the failed storage device has been replaced. In the worst case scenario, some if not all applications may have to be re-installed if only the user data was the one backed up, however, unless the applications are that of vintage programs may no longer available, the data is far much more valuable than the software itself.

In the scenario whereby there is no backup and the data has to be recovered, there are a number of organizations that normally specialize in the retrieval of data from the damaged computers. They may use different techniques as being able to move the drive to another working computer, or they may just have to open the drive itself and replace certain parts such as the read/write heads, the actuator arms and the chips. In certain cases, the platters are removed and then placed into another drive.

The newer disk drives are usually tested during manufacture, and parameters that are unique to that drive stored in its firmware. As one uses the drive, data regarding bad sectors are also added. In case the drive is badly damaged in the areas which contain the drive information, replacing the parts may not be enough for recovery of the data.

This is basically a controller card disk which is capable of supporting one or more configurations. It was originally meant only for the SCSI drives, but the RAID Controllers just became really popular for both the SATA and PATA drives

What are RAID Controllers

It is technically a device that manages the physical disk drives, and then thereby presents them to the computer in such a form as of logical units. Yet in most cases, implements hardware, thus it is sometimes referred to as RAID controller. It also often useful in that it provides the additional disk cache. The  controller is capable of offering a level of notion between the operating system as well as the physical computer drives. The RAID controller provides groups of the various applications and the operating systems, as logical units for which the data protection schemes can then be defined. Since the controller is capable of accessing multiple copies of various data on multiple devices, it is therefore capable of improving performance and can protect data in the event that a system crash occurs.

In the Hardware-Based RAID, physical controllers is used in managing the RAID arrangement. The controller can also take various forms such as a PCI or PCI Express card that is designed to support only a specific drive format like SATA. However, some of the RAID controllers could also be integrated with motherboards. The controller may also be software-purely, thereby using the hardware resources belonging to the host system. The Software-based RAID generally gives similar functionality as to that which is hardware-based RAID, but typically less in performance than of the hardware versions.

RAID Controller Failure Causes and Remedies

RAID controller failures may occur due to a variety of reasons. Normally a technician would assume that one of the drives has failed.  It is a very common diagnosis for RAID controller failures as the diagnostic lights on the drives may be blinking, gone orange, or as may be in some cases the drive may not be spinning.  These surface indicators would definitely lead the technician to assume that the drives have either failed or are on their way out.  There is, however, another reason why all these things might occur, and that would definitely be a RAID controller failure.  The challenge is to be able to diagnose the problem with a damaged controller.

However, despite the advantages offered by the RAID arrays, there are certain disadvantages as well, e.g. should the RAID controller fail, it will become very hard or even in some cases not possible to continue making use of the RAID array in the original arrangement. In various cases, the user data and files end up becoming inaccessible with no original or a well-suited RAID controller required.

In the event that your RAID controller does fail and you need access to your data, you need to consider making use of a dedicated RAID recovery device to be able to recover data and files from the inaccessible array and putting all the recovered files onto one hard disk.