India - Data Recovery

Stellar is a reliable name for all computer data recovery services in India. Stellar has offices spread across the country which cater its expert data recovery service to numerous corporate, institutes, government agencies, and individual customers. Get the best hard drive, laptop, RAID, server, email, database, and file data recovery services at Stellar at affordable price.

DATA RECOVERY SOFTWARE

SQL Database Recovery Software

Stellar Phoenix SQL Database Recovery v2.1, an MS SQL Server repair utility, performs data recovery from all logically crashed MS SQL database files and restores database components at user-specified location. The recovery software can restore almost all SQL database components like, tables, reports, views, and forms.

DB2 Database Recovery Software

Stellar Phoenix DB2 Recovery v1.0 is a database repair application to repair IBM DB2 (UDB) v8 database after any logical damage. The recovery software incorporates high-end scanning procedures to recover almost all DB2 database objects, including schemas, containers, tables, buffer pools, and triggers. The objects can be previewed before restoration.

Access Recovery Software

Stellar Phoenix Access Recovery repairs MDB and ACCDB files and restores them to default or new location. Compatible with Access 2007, 2003, 2002 (XP), and 2000, the database repair software performs repair without changing the original database file. The recovery software is built with intuitive user-interface and can be easy-to-operate.

Oracle Database Recovery

Stellar Phoenix Oracle Recovery v1.0 performs repair of Oracle 9i database in just few mouse clicks. The Oracle data recovery application recovers almost all database objects, like tablespaces, cluster tables, synonyms, indexes, views, tables, and sequences. The software provides a preview of all these database objects before restoration.

Exchange Database Recovery

Stellar Phoenix Mailbox Exchange Recovery v3.0 is an Exchange Server data recovery tool that repairs logically crashed .edb files. Compatible with Exchange Server 5.5, 2000, 2003, and 2007, the tool performs EDB recovery in just three simple steps. The tool also recovers deleted mailboxes and saves them at user-specified location.

DBF Recovery

Stellar Phoenix DBF Recovery v1.0 repairs logically damaged dBase III, dBase IV, dBase V, MS Visual FoxPro 6.0, MS Visual FoxPro 7.0, MS Visual FoxPro 8.0, MS Visual FoxPro 9.0. The DBF data recovery utility restores almost all DBF file components, like table name, column name, primary keys, and column data type.

US - Data Recovery

US - Data Recovery

Stellar Data Recovery Services Inc., offers lab data recovery services to corporate as well as individuals. Stellar has over 16 years of data recovery experience and has expertise in RAID data recovery, SSD data recovery, etc. Stellar engineers can recover data from crashed hard drive, physically damaged drive due to water, fire, accidentally dropping apart from various other data loss situations.

Recovering overwritten data

When data have been physically overwritten on a hard disk it is generally assumed that the previous data are no longer possible to recover. In 1996, Peter Gutmann, a respected computer scientist^[, presented a paper that suggested overwritten data could be recovered through the use of Scanning transmission electron microscopy. In 2001, he presented another paper on a similar topic. Substantial criticism has followed, primarily dealing with the lack of any concrete examples of significant amounts of overwritten data being recovered.^[10][11] To guard against this type of data recovery, he and Colin Plumb designed the Gutmann method, which is used by several disk scrubbing software packages.
Although Gutmann's theory may be correct, there's no practical evidence that overwritten data can be recovered. Moreover, there are good reasons to think that it cannot.

Data carving

Data Carving is a data recovery technique that allows for data with no file system allocation information to be extracted by identifying sectors and clusters belonging to the file. Data Carving usually searches through raw sectors looking for specific desired file signatures. The fact that there is no allocation information means that the investigator must specify a block size of data to carve out upon finding a matching file signature, or the carving software must infer it from other information on the media. There is a requirement that the beginning of the file still be present and that there is (depending on how common the file signature is) a risk of many false hits. Data carving, also known as file carving, has traditionally required that the files recovered be located in sequential sectors (rather than fragmented) as there is no allocation information to point to fragmented file portions.Carving tends to be a time and resource intensive operation.Recent developments in file carving algorithms have led to tools that can recover files that are fragmented into multiple pieces.

Consistency checking

The first, consistency checking, involves scanning the logical structure of the disk and checking to make sure that it is consistent with its specification. For instance, in most file systems, a directory must have at least two entries: a dot (.) entry that points to itself, and a dot-dot (..) entry that points to its parent. A file system repair program can read each directory and make sure that these entries exist and point to the correct directories. If they do not, an error message can be printed and the problem corrected. Both chkdsk and fsck work in this fashion. This strategy suffers from two major problems. First, if the file system is sufficiently damaged, the consistency check can fail completely. In this case, the repair program may crash trying to deal with the mangled input, or it may not recognize the drive as having a valid file system at all. The second issue that arises is the disregard for data files. If chkdsk finds a data file to be out of place or unexplainable, it may delete the file without asking. This is done so that the operating system may run smoother, but the files deleted are often important user files which cannot be replaced. Similar issues arise when using system restore disks (often provided with proprietary systems like Dell and Compaq), which restore the operating system by removing the previous installation. This problem can often be avoided by installing the operating system on a separate partition from your user data.

Recovery techniques

Two common techniques used to recover data from logical damage are consistency checking and data carving. While most logical damage can be either repaired or worked around using these two techniques, data recovery software can never guarantee that no data loss will occur. For instance, in the FAT file system, when two files claim to share the same allocation unit ("cross-linked"), data loss for one of the files is essentially guaranteed.