Case:The customer’s notebook cannot enter the operating system after restarting. It is found that it is a hard disk problem after detection. The customer needs to restore the office file photo application software installation program in the hard disk. Solution:According to engineers, the hard disk guidance sector logic bad ducts lead to a dead cycle…
How to do if you find some corrosive spots on the hard drive PCB board, as the below photo: The spots can be easily cleaned by a rubber.
The basic idea of RAID (Redundant Arrays of Inexpensive Disks) is to combine multiple small, independent disk drives into an array of disk drives which yields performance and recoverability exceeding that of a Single Large Expensive Drive (SLED). Redundancy is also provided (unless RAID 0) which allows easy and often automatic recovery from hard disk crash. With the reduction in price of ATA and SATA drives it is often a good idea, even for desktop computers, to setup a RAID 1 system to allow you to function in the event of hard disk failures. In RAID 1 two hard disks (or portions of them) mirror each other. RAID 1 is essential for our environment. I have tested both Windows software RAID facility as well as Linux RAID capability. Linux RAID support is way superior to Windows and should by itself be the reason to switch to Linux. I have given 4 reasons to support my claim below.
Linux supports RAID on block devices. So you can setup RAID between two partitions on the same hard disk or even on two RAID 0 arrays, effectively creating RAID 10 array. Windows simply supports RAID 0 and GBOD (known as linear on Linux) only for non-server users. Linux support all RAID variants. Even Windows server doesn’t support the intermediate RAID variants.
In Linux as well as Windows you can create RAID arrays spanning machines.
In Windows you cannot install the operating system on RAID. In Linux you can even install the operating system on RAID file system. This means if one of the hard disk dies you can easily boot from the other hard disk (assuming you transferred the MBR earlier).
If you have spare hard disks, Linux will automatically configure it and add to the RAID array, should one of the RAID disks fail. This is to my knowledge not possible in Windows.
Linux RAID can be easily configured during installation. All the partitions (/, /opt and even swap) can and should be RAID enabled. Windows RAID is harder to configure and is done after installation of the OS, from disk management.
Comprehensive RAID support by itself (not to mention security) should be reason enough for SMB servers to switch to / use Linux.
Case:Samsung notebook hard disk HM320JI, board number: BF41-00157A Rev 03, the circuit board is burned.After the customer has found the circuit board to replace it, he still does not recognize it.It was introduced by a friend to the Data Recovery Center Baisaohui Company.This is Samsung’s new model.The circuit board cannot be recognized directly.The Samsung’s hard…
Case:Seagate Momentus 5400.6 500G mobile hard disk, the customer puts it in the pocket of the coat, accidentally accidentally, the hard disk fell from the pocket to the ground.Then connecting the computer, I did not recognize the disk, and there was creaking abnormal noise. There were important job information in it to recover data. Customers…
Optical storage is a term from engineering referring to the storage of data on an optically readable medium. Data is recorded by making marks in a pattern that can be read back with the aid of light. A common modern technique used by computers involves a tiny beam of laser light precisely focused on a spinning disc. An older example, that does not require the use of computers, is microform. There are other means of optically storing data and new methods are in development. Optical storage differs from other data storage techniques that make use of other technologies such as magnetism or semiconductors.
The term optical drive usually refers to a device in a computer that can read CD-ROMs or other optical discs.
Case:Customer response TF card is connected to the computer to open the prompt “formatting””. Solution:The analysis found that the partition table was normal
how i can run this command from cmd : powershell.exe “(get-process | ? {$_.Description -eq “Sysinter Process Explorer”}) | select processname | out-file $env:APPDATAexample.txt” i still get this error : You must provide a value expression on the right-hand side of the ‘-eq’ operato r. At line:1 char:37 + (get-process | ? {$_.Description…
Case:Customers describing most of the data in a computer’s 160G mobile hard disk suddenly lost, and did not do other operations later. Solution:Based on customer description, preliminary judgment may be due to the loss of data due to virus destruction, or deleting deletion, and the chance of recovery should be very high.Through the underlying analysis…
Case:The customer’s color card N4100PRO NAS, a total of four hard disks, each 1.5T. All of them are photos. The amount of data is about 4t .1,2,3 hard disk report errors. The data cannot be accessed. Solution:After the test of the four hard disks, there are a lot of bad disks on No. 2 and…
