Case:Mr. Huang, a provincial Shaoxing City, couldn’t enter the system after the computer was turned on. It was found that the hard disk was not normal. The computer maintenance staff said that the hard disk could not handle it. Mr. Huang was anxious because the financial data in the computer was very important.Find the data…
Object-based storage device
An object-based storage device (OSD) is a device that implements the standard in which data is organized and accessed as objects, where object means an ordered set of bytes (within the OSD) that is associated with a unique identifier. Objects are allocated and placed on the media by the OSD logical unit. With an OSD interface, metadata is associated directly with each data object and can be carried between layers and across storage device files. Records are no longer abstractions, but actual storage objects that are understood, managed, and secured at the device level.
Offline storage
Any storage medium that must be inserted into a storage drive by a person before it can be accessed by the computer system is considered to be a type of offline storage. Also called removable storage.
Online data storage
Also called Internet storage or hosted storage, online data storage is a data storage management solution that enables individuals or organizations to store their data on the Internet using a service provider, rather than storing the data locally on a physical disk, such as a hard drive or tape backup.
Open document management API
Open document management API (ODMA) is an open industry standard that enables desktop applications to interface with a document management system (DMS). ODMA simplifies cross-platform and cross-application file communication by standardizing access to document management through an API. ODMA allows multiple applications to access the same DMS without the need for a hard-coded link between the application and the DMS.
Operational data store
A type of database that serves as an interim area for a data warehouse in order to store time-sensitive operational data that can be accessed quickly and efficiently. In contrast to a data warehouse, which contains large amounts of static data, an operational data store contains small amounts of information that is updated through the course of business transactions. An operational data store will perform numerous quick and simple queries on small amounts of data, such as acquiring an account balance or finding the status of a customer order, whereas a data warehouse will perform complex queries on large amounts of data. An operational data store contains only current operational data while a data warehouse contains both current and historical data.
Overwrite(v.)
To record or copy new data over existing data, as in when a file or directory is updated. Data that is overwritten cannot be retrieved.
(n.) Refers to a file or directory that has been overwritten.
Case:The client server starts after the power is disconnected. The hard disk cannot be found. The customer can find the hard disk after re -inserting the RAID card and hard disk. The raid information is not wrong. Solution:After testing and analysis by the engineer, RAID information was damaged, and one of the three plates in…
HDD Printed circuit board (PCB) with board number 100656494 is usually used on these Seagate hard disk drives: The 100656494 Seagate PCB repair process can usually be divided into 2 steps: find a replacement PCB and firmware transfer. 100656494 Seagate PCB: Board Number Finding a donor Seagate PCB board is easy, you just need to…
I am attempting to set up my Raspberry Pi as a bridge, using Debian wheezy. I have a hostapd.conf: (some details changed for security, and yes, I know WEP is no good)… interface=wlan0bridge=br0driver=nl80211auth_algs=1macaddr_acl=0ignore_broadcast_ssid=0logger_syslog=-1logger_syslog_level=0hw_mode=gssid=MY_SSIDchannel=11wep_default_key=0wep_key0=MY_KEYwpa=0 And this in /etc/network/interfaces: auto loiface lo inet loopbackiface eth0 inet dhcpallow-hotplug wlan0iface wlan0 inet manualwpa-roam /etc/wpa_supplicant/wpa_supplicant.confiface default inet dhcpauto br0iface br0…
Attribute changer
This application is designed to automate mass changes to file and folder attributes. It add’s itself to the context menus for folders and drives. You can establish filters and exceptions to fine tune the search process.
Fast File Renamer
A free program which can help you with the tedious task of renaming large numbers of files. It can be used by anyone who needs to keep large collections of files organized (such as mp3 files, image and graphics files, web-site-related files, system files).
FreeCommander
Free dual-pane Windows-Explorer replacement.
Media Convert
Free online media-file converter. Converts sound, video and text files to other formats.
ShellGem
A small free program that makes moving and copying files in Windows 95/98 easily. Once you install it, just right-click-drag any file, and ShellGEM opens a list of the drives on your system. You can then move through an unfolding tree of your system’s folders (no clicking required), and move or copy the file wherever you want.
The Rename
Program that allows you to rename a batch of files simply and quickly with many options.
Total Commander
Not free. A highly recommended shareware Explorer replacement program for Windows. Improved access to your local files through a two-pane interface, convenient access to remote FTP sites, access Zip files as directories, enhanced search, quick view, etc. Much better than the standard Windows explorer.
UnLock IT
Freeware program which enables you to unlock the files that are locked by some processes in your system. For Windows.
xplorer2 lite
Free file manager for Windows.
XXCopy
XXCOPY is a powerful superset of XCOPY using the same syntax. Command-line program for DOS and Windows.
Case:Pudong customers’ mobile hard disk took out the copy of the information and was infected by the computer. When the mobile hard disk file was copied to the computer the next day, it was copied to half of the computer.After inserting the hard disk into the computer again, the mobile hard disk cannot be recognized…
I have an external hard drive that was used as a Windows partition before, but now I want to use it for storage instead. I have added it to my Windows 7 machine, but I am not allowed to write or delete serveral of the files and folders on the disk. I get the error…
I’m building a new rig, and need to know if theres really any noticeable, real-world performance difference between a 500GB hard drive with 16MB cache or a 500GB drive with 32MB cache. both would be running on Sata III 6GB/S. 16MB vs. 32MB cache – any difference?
Of all the factors that affect a drive’s performance, cache is by far the least important. The most important factors are the spin rate (RPM) of the drive and the platter density. More spins per second = more data per second, and higher platter density means more data per spin = more data per second.
Cache is important, but once you get beyond a certain amount it doesn’t really give you any better performance. Since cache memory is cheap, all the manufacturers include enough of it to optimize the performance of the drive. As a result, differences between one drive and another don’t really make a noticeable real-world difference.
In fact, the most common reason for different cache sizes is because the platter density is different and so the drive needs more cache to hold “x” tracks worth of data. In this scenario the drive with more cache will perform better, but it’s because of the higher platter density, not because of the extra cache.
Computers can, without a doubt, be complicated beasts; one minute they are doing exactly what you want them to do, and the next they are suddenly going off and doing their own thing. And before you know it, your computer crashes, leaving you with missing files, an increased heart rate and a bad temper. But before you’re ready to throw your computer out the window in anger, let’s take a few deep breathes and talk about what actually happens when a file accidentally deleted and explore possible ways of getting that information back again.
For starters, when you unintentionally delete a file and begin to have a panic attack once the file has disappeared, you can rest assured that your file is not lost forever (phew!). The file will not be immediately visible in the directory or folder that you (or the computer) thought you stored it in. Instead, the file gets re-named so that the path it was using can be overwritten and can then be found in a hidden index file. The good news is, it can be completely recovered from this file if needed. In fact, all data continues to be stored on your computer until it is completely overwritten. And just to clear something up, by overwritten, I do not mean different information. It takes a random mix of binary code (0 and 1) to completely obliterate a data or file’s information. This is why hard drives should be absolutely and completely destroyed to an unrecognizable pulp or at least be overwritten by using a program that exists to overwrite data. Do not just recycle your computer or sell it to someone else without getting rid of your data properly first, or you could come to regret it later. This is especially important if you have sensitive information or media on the computer!
So now that we have established that data recovery is possible, how is it done? Well, there are a number of cleverly devised free and paid versions of data recovery programs available, depending on what your data recovering needs are. For example, you may have just accidentally deleted a file. Recovering this is relatively simple when compared to trying to recover data from a damaged or corrupted file. Not only can you retrieve the data but you can also use the software to recover other types of deleted information such as emails or email attachments.
Some paid data recovery programs have a “no recovery – no fee” guarantee. This may seem like a pretty high guarantee to offer, but if self-recovery or the free programs aren’t giving you the results you need, the paid programs might be better route to take. Furthermore, the free programs may have a smaller range of capabilities; how/why your data was lost in to begin with will likely determine how it can be recovered. No matter how you lost your data and how hopeless you think the situation may be in returning that data to your computer, fear not. There are data recovery experts available to help you no matter how severe your data loss may (seem to) be!
