If you need to remove sensitive data totally from your harddisk, simply deleting these files is not enough! Using advanced methods, it is even possible to recover data that’s been overwritten, unless it has been overwritten using carefully selected platterns!
Operating systems usually do not totally delete the file, but just mark the file as being ‘deleted’ so it can not be accessed when you view the contents of a directory. This means that you can not see the file anymore with normal tools, but specialized recovery tools can still access your data.
To prevent this from happening, you need…
The services listed in this section enable you to backup, store and/or share your files on the Internet for free.
4shared.com
1 Gigabyte of free space to share files.
DriveHQ
Free 1Gb of remote storage space including FTP access and file-sharing. The non-free plans range from 2 Gb for $ 2.99/month up to 20 Gigabytes for $19.99/Month
File Hamster
Free real-time backup and archiving of your files while you work, monitor specific files on your hard drive and automatically create incremental backups, etc.
FLASHspace
Remote storage space which presents itself as simply another disk-drive inside your Windows computer (no software…
A virtual disk is a program or driver which allows you to access a file (usually a disk-image file) as if it is an external drive.
VM Back
A virtual floppy drive for Windows
Free encrypted virtual drives
A listing of free disk encryption software and encrypted virtual drives.
XOR
Exclusive “Or”, a computer language function that generates parity in RAID systems; “this or that but not both
Usable storage capacity
Disk array capacity that is usable for data storage (vs. for mirroring or parity data). For example, under mirroring (RAID 1 and 0/1), usable storage remains a constant fifty percent (half of storage is always used for redundancy). This is in contrast to other RAID levels such as RAID 5, in which usable storage capacity is determined by the formula of “n-1″. “n” is the total number of disk drives and “1″ is the number of disks worth of capacity used for parity (redundancy) overhead. So, as the number of disks in the array grows, the usable…
Write-Back Cache
A caching strategy whereby write operations result in a completion signal being sent to the host operating system as soon as the cache (not the disk drive) receives the data to be written. The target disk drive will receive the data at a more appropriate time in order to increase controller performance. An optional cache battery backup can be used to protect against data loss as a result of a power failure or system crash.
Write-Through Cache
A caching strategy whereby data is written to the SCSI drive before a completion status is returned to the host operating…
Terminator
A part used to end a SCSI bus.
Termination
A method of matching transmission impedance of a bus to eliminate signal reflections from the physical ends of the bus.
Throughput
The number of I/O requests satisfied per unit of time (usually per second).
TPC-C, Tpm-C
The Transaction Processing Performance Council (TPC) is a standards organization that measures transaction throughput of systems. One of their benchmarks is Tpm-C, which reflects price and performance metrics. TPC-C reflects new order transaction rate, a benchmark for transaction speed. Mylex products have won consistently high TPC-C results.
Transfer Rate
The rate at…
SelfImage
SelfImage is capable of making an image of a hard disk partition and saving it as a file – useful for making backups.
RawWrite for Windows
A tool for creating boot disks and other floppy disk images.
dd for Windows
Utlity to create disk-image files, create disks from disk-image files, and rip an iso file from a CD.
XXClone
Copies the whole Win NT, 2000 or XP system volume to another disk that will be ready to boot without a restore step. Supports FAT, NTFS, USB-disk, PATA and SATA.
Drive Backup 9.0 Express
Easy new steps for total PC…
Seagate is the world’s largest manufacturer of hard drives and storage solutions. The company was founded in 1979 and is based in Scotts Valley, California. Seagate’s hard drives are used in a variety of computers, from servers, desktops, and laptops, to other consumer devices, such as digital video recorders, Sony’s PlayStation 3 and Microsoft’s Xbox and Xbox 360 video game consoles, and in portable media players and automotive navigation systems.
History
* 1979 – Seagate founded as disc drive manufacturer.
* 1980 – Builds industry’s first 5.25-inch hard drive.
* 1989 – Seagate acquires Imprimis Technology – high-capacity…
SCSI
Small computer system interface (pronounced scuzzy). The fast, intelligent input/output parallel bus used by high-performance peripherals.
Software-based array
An array in which all management functions including parity calculation (XOR) are performed by the host server CPU. These products are low priced but have high CPU utilization and limited fault-tolerant features. High-performance, low-cost array adapters are quickly replacing these inferior software-based arrays.
System disk
The disk (or array) on which a system’s operating system is stored and from which it is initially loaded into system memory.
SAF-TE
SCSI Accessed Fault-Tolerant Enclosure, an “open” specification designed to provide a comprehensive standardized…
