Just about every night I put my Windows 7 computer to sleep, and then I turn off the power to my bluetooth keyboard. Almost always, the next morning my computer has woken up, keyboard still off. I’m using a Microsoft Wireless Desktop 7000 keyboard (no mouse) and the associated USB adapter. Everything is setup so…
Photograph and log room, position of computer and status of computer;
If the computer is “OFF,” Do Not Turn “ON”;
If the computer is “ON,” Do Not Turn “OFF”;
Place Evidence tape over each drive slot;
Photograph and label back of computer components while they are plugged in;
Label all connection ends to allow reassembly if needed;
If transporting, treat all components as fragile;
Collect all devices such as cables, keyboards and monitors;
Collect instruction manuals, documentation, and notes;
User notes may contain passwords;
Case:Shenzhen customers described that the customer reported the fault disk when the data was replicated and exported, and the data transmission was interrupted, and the mobile hard disk prompting formatting was formatted again, and the customer did not do any operation. Solution:After the engineer, the client reported the fault disk, and the diagnostic result was…
I was thinking about going down the RAID road with my rig and was wondering what people think is best RAID-0 or RAID 0+1(This is what i was thinking) or is there a better option advice would be well recived befor i go spend £150 on 3 more new drives to make the 4 needed for 0+1 and could you tell me how RAID 0+1 and RAID 1+0/10 differ please.
As was said up, it’s necessary to know the application before accurate advice can be given. RAID 0 will benefit you in database access, huge spreadsheets, video editing, CAD rendering and a few other specialized apps. For everybody else, all its going to do for you is getting you bragging rights for good benchmark scores.
If you need data redundancy, and in reality who doesn’t, RAID 1 is a viable solution. For most data control situations an NAS presents a very convenient alternative and it easily performs the same job for multiple boxes. All data can be kept on the NAS with images of a standard “programs drive” as well as individual boot drives for each machine on the network, making cold metal restores a cinch. Many proprietary RAID formats will even allow ya to do rebuilds and expansions on the fly via “Hot Swap”. It’s also rather “portable” and the joke in my SOHO is that in case of fire, I can grab the NAS handle and run …. and after the data is safe come back in for the any employees, wife, kids, etc.
If your concern is only “one box”, RAID 1 provides data redundancy…..but so do other alternatives …. i.e. tape / optical, cloud backups …… RAID 0 , again unless you have specialized applications, will serve no observable benefit other than nice benchmark scores.
We first look at the following two pictures. Picture 1 is the “BIOS CHIP” of the circuit board. When we replace the PCB, we need to swap the “BIOS CHIP” with your original PCB. Picture 2 shows the “Board Number” of the board, and the “Board Number” must be the same! FAQs of 100720903 PCB…
Drives not showing up in post can be caused by a variety of problems. Please check the
following:
• Are you using the latest BIOS and firmware for the server board and the latest firmware
for the RAID card?
• System memory limitations limit the number and size of option ROMs that can be used
in the system. If you place too many adapters in the system, or the ROMs on the
adapters you have installed take up too much space in memory, the option ROM on
your RAID controller may not expand correctly and will not show the hard drives that are
connected to it. Try turning off the expansion ROMs for any on-board device that is not
being used. For example, if your server board includes a SCSI controller that is not
being used, disable this SCSI controller in BIOS setup. For a list of tested peripherals
with the Intel RAID controller, download the Tested Operating System and Adapter List
from http://support.intel.com/support/motherboards/server.
• If you are using a Zero Channel Card that utilizes the on board IO controller, such as an
on-board SCSI or Serial ATA controller, the Option ROM scan for the on-board device
must be enabled. If it is not enabled, drives connected to that device will not show up
during POST.
• Confirm that the drive power cables are firmly connected. If you are using a chassis
with a backplane, make sure the power and SCSI cables are properly applied to the
backplane and the hard drives are firmly seated in the backplane.
• Check your SCSI ID numbers. SCSI devices must each have a unique ID on the SCSI
bus. This number is set with jumpers on the device. ID numbers should be set starting
at 0 and they must be set lower than 8 if booting from the drive. If you are using a
server chassis with a backplane, the device IDs are usually automatically set by the
backplane, but may be manually configurable.
• Check for proper termination on the SCSI bus. Intel RAID cards are by default autoterminating.
If your hard drives still do not show during post, please call your customer support
representative. Note the following information and have it ready to assist the support engineer:
• Model number and firmware revision of the RAID controller you are using.
• Manufacturer and model number of other add-in adapters installed in your system.
• Manufacturer and model number of hard drives installed in the system.
• Identify the type of termination used for the card.
• The SCSI IDs of the devices on your SCSI bus.
• The number and type of SCSI channels.
• Manufacturer and model of the memory used in the system and on the RAID controller
and whether it is on the tested memory list.
2- The Continuous Noise
Sometimes there is a continuous noise come from WD HDDs mainly with L-shape PCBs
with motor ICs ( Smooth 1.3) , (L6278 1.7) & (L6278 1.2).
The noise is like: Trrrrrrrrrrrrrr or Trrrr….Trrrr…Trrrrr
so all we have to do for fixing this problem is:
1) – clean the connection points which connect the head stack pins with the PCB using a pencil Rubber …carefully.
2) – clean the motor IC pins thoroughly using a solvent & Toothbrush then wipe it with a piece of smooth handkerchief to remove the dust & dirt from it.
Note- the two steps mentioned above solve the problem in few cases.
3) – if the two steps mentioned above didn’t fix the problem , you have to replace the motor IC cause it’s damaged.
Note- in case of Motor ICs (L6278 1.7) & (L6278 1.2) first try to desolder them then resolder them again before u decide to replace them with a new ones … this sometimes work , but if it didn’t work … replace them directly.
– In case of Motor IC (Smooth 1.3) you must replace it directly.
The image below Shows you where to clean:
Case:Customers do videos. The use of 1TB of Western Drives. Under normal shutdown, it is impossible to enter the operating system again. There are a lot of video files to be recovered. Solution:When the machine is connected, there is no partition. Open the disk management hard disk for initialization. At first glance, the partition table…
Case:Personal client’s computer cannot enter the system. Looking for friends, it is said that there is a problem with a hard disk.There are many job information in it, and it is important to recover.I checked the data recovery company on the Internet and saw that your company was very professional, so he brought the hard…
Case:Customers are a wedding company. The unit uses Canon 5D III to shoot videos and stores the computer. The accidental power failure causes the hard disk to fail.MOV video requires about 800GB of data recovery center recovery. Solution:1. The engineer of the data recovery center detected that the fault hard disk had a slight noise,…
