Server Common Problem Solving method

The job of a network administrator is often to diagnose and troubleshoot a variety of server failures. Although no one likes trouble, but trouble always find their own door. Only with superb diagnostic skills can you respond quickly in an emergency and ensure that your network runs smoothly. The following Hengyang high-anti-machine room technical staff summed up some common problems in the server solution, and rented a server friend Exchange.

When you're challenged by a network failure, start by asking yourself a few simple questions: what's changed? Has this problem ever been met before? If so, when is it? Is it possible for the problem to reappear? Did the user do anything special? Have other users encountered the same problem?

Why does the post fail?

Workaround:

1) The machine shuts off the power and opens the chassisComsclearJumper caps for jumpers willComsclearjumper
the other two pin short (see the motherboard manual for jumpers);
2 Machine power-up, self-test, and other machine self-test completed, reportedCMOShas been cleared, then the machine power off, the jumper can be restored;
3 ) The machine is powered back on.

Machine Boot FAQ Processing

Workaround:

1, after loading the system, the monitor appears the phenomenon of flower screen, the departmentAGPvideo card failure. Everything is fine after the change.
2 , boot black screen, do not self-test, and reported two beeps, the system memory is not inserted tightly. Reseat the memory and troubleshoot the problem.
3 , the boot cooling fan does not turn, and the rear chassis fan is turned (indicating that the motherboard has been powered on), the systemCPUCooling Fan Power cord interpolation error
(plug into the chassis fan power connector), plug intoRIMM1, side ofCPUThe fan interface is resolved after the fault.

for NAS What are the workarounds for system maintenance?

Workaround:

because nas4100/4300 The operating system has a mirrored backup, and general system corruption can be initiated by a backed-up operating system. This maintenance step includes the following:

1 ) hard Drive problem
2 ) operating system and backup system are destroyed

The steps are as follows:

1. Select the same model of spare parts, because the nas4100/4300 has 4 hard drives, it is recommended to select the user problem of the same hard drive

2. Delete the data area on the hard drive , and remove the data area separately from the hard drive to the PC . The above steps are not allowed on the NAS

3. Replace the good hard drive with the problematic NAS on

4. start nas < Span style= "Font-family:times New Roman" >nas connect keyboard and monitor , in nas change cmos

5. Open the management interface of the NAS into the terminaladvancedservice Management Interface

6. in the Disk Management options of the Win2000 System, restore the system zone and data area

* For System area recovery work is mainly to re-establish the system's image protection, select the system area of the hard disk click the right mouse button, choose to re-establish the mirror
* Recovery of data area is mainly to re-establish the systemRAID5data protection due toNASof theRAID5data protection, the original system if there is a problem, replace a hard drive to re-establishRAID5can be. Here's how: Select the hard drive of the data area, right click, select RepairRAID5re-establish

7. during the system area and data area recovery process, wait for the end of the entire process, as this can have an impact and may cause data loss if interrupted at this time. The recovery process for the data area can take up to 5 hours, depending on the amount of data region data.

Precautions:

* For the system area of hard disk replacement, a corresponding replacement is important to reduce data loss and instability, reduce the maintenance of the workload if re-established RAID5 area, replace the hard drive this area must be removed, otherwise it cannot be re-established

Windows service cannot be started

Workaround:

in a single Windows2000 on the server, some services are set to start without the local system account. after restarting the Windows2000 server one time, it is found that these services are not started, you must manually open the service, reenter the password, and then start the service. Each time you re-enter your password, you receive a message saying:< user name > has been granted permission to log on as a service.

To resolve this failure, first answer the following questions:

Where did it change? Did someone modify the server?

Can this service be started before?

is the user name and password correct?

the query modification record finds that the server is aDC, and not long ago was the domain Controller organizational unit (OU,organizationalunit) is a member. When you move out of theOUbefore, these services have been able to start smoothly. In addition, the user name and password used to start these services are legal. Further research finds that the domain controllerOUmembers have special permissions, including the right to log on as a service. When the problem occurs, the server moves out of theOU, the server loses those permissions. Now all you have to do is restore permissions to the server.

To grant permissions to the server, follow these steps:

in the administration console ( MMC ), open the Active Directory Users and Computers snap-in, and then open the domain controller OU 's Properties dialog box.

On the Group Policy page, click Default Domain Controllers Policy, and then click Edit to open the Group Policy manager.

extend the Computer configuration in turn /windows Set / security Settings, expand Local Policies, and then click User Rights Assignment.

In the right pane, right-click Log on as a service, and select Menu security.

Add the user account that you used to start the service to the policy, and then click OK when you are done.

Server FAQ V: Used on the server SCSI hard disk, why the hard disk ID number cannot be set to 7?

SCSI controller, the default is id=7 is set to the hard disk controller, so the ID number cannot be set to 7

Server Common Failure 12, why post does not pass ?

Workaround:

machine cut off the power, open the chassis, use " comsclear " Jumper caps for jumpers will be " comsclear "jumper for another two pin short connection ( jumpers See motherboard manual ) machine power, self-test, such as machine self-test closed, reported cmos has been cleared, then the machine power is switched off, the jumper can be restored to restart the machine.

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Server Common Problem Solving method