Server maintenance cases
Server maintenance case studiess (6 cases)
Click on any case to view the complete process: receiving → testing → processing → delivery, including time, results and customer feedback. These cases come from our 2025–2026 service records.
Server Repair (6 cases)
Dell/HP/Lenovo/Huawei, RAID Reconstruction and Incident Response Service
🗃️ Cases
Corrupted Enterprise Dell PowerEdge Server RAID Card: Emergency Repair Chronicle
An enterprise file server RAID5array crashed and Dell PERC H730 RAID card failed resulting in unrecognized hard drives. After an all-night array reorganization and data migration, all business data was successfully recovered.
💾Cases
HP ProLiant Server Fan Spinning: Troubleshooting Temperature Modules
All fans in the HP DL380 Gen10 server were running at full speed and made loud noise. The test found that the motherboard temperature control sensor was faulty. After replacing the sensor, the fan returned to normal speed.
🗃️ Cases
Synology NAS Dual Hard Drive Offline: RAID1array reorganization data recovery
User Synology DS220 + NAS offline due to bad sectors in one of the two hard drives. Through hard drive mirroring and RAID configuration analysis, the array was successfully reorganized and all data was recovered.
🗃️ Cases
Dell R730 RAID5 Dual Disk Dropped: Array Rebuilds Zero Data Loss
Two hard drives were disconnected one after another, and array degradation alarm was given. The security sequence was rebuilt and the array was verified completely. The data was completely restored, and the business was not affected.
🗃️ Cases
HP DL380 memory error frequently: positioning fault DIMM replacement
The system log repeatedly reported memory errors, and the faulty memory module was checked one by one. After replacement, it passed the 72-hour stability test.
🗃️ Cases
Huawei Server Cannot Boot: Motherboard Power Supply Module Repair
Server power-on no self-test, detection of motherboard power supply module failure, chip-level repair after normal, for customers to save replacement costs.
Server Maintenance Record Articles (3)
Original long article by engineer, including complete troubleshooting process, accessory model and charging details
🗄️ Server Repair
RAID5 dropped two disks, do not force online_The real recovery process of a mold factory in Panyu
4 pieces of 2TB Western Digital RE4, Dell R730, PERC H730. The customer clicked Force Online to write the verification flowers, and the mirror reorganization saved 3.2TB drawings in three days. The charge details are all open.
📅2026-09-02 ·Original·Read about 6 minutes
🗄️ Server Repair
Server lights yellow and red Don't panic: Dell/HP/Lenovo alarm lights 5 minutes self-examination manual
iDRAC/iLO/XCC log check fault location: hard drive PFA, memory ECC, power fan temperature alarm processing priority, attached HP DL380 midnight visit record.
📅2026-08-25 ·Original·Read about 6 minutes
🔧 Server Repair
Server dual power redundancy is false insurance: Dell R740 midnight downtime, found that two power supplies have long been broken
Redundant power supply broken one no one knows, the second followed aging downtime. iDRAC alarm was ignored 47 days of the cost, attached R740 power self-test process and replacement price.
📅2026-09-03 ·Original·Read about 5 minutes