Solution: Replace the failed disk array controller online. The replacement process does not affect the normal operation of the application system. Disk array and server switch sequence: Startup: Start the disk array first, and then start the server after two minutes. Shutdown: Shut down the server before shutting down the disk array.
Second, power failure: The disk array has three power supplies, one of which is a backup power supply, so the disk array must work at least two power supply. If only two power supplies are connected, the LCD will alternately display “FailPower†and “RAID Ready†with beeps, but it will not affect the normal operation of the application system.
Solution: Replace the faulty power supply online. The replacement process does not affect the normal operation of the application system. The LCD will show "RAID Ready" after replacement.
Three: Fan failure: The LCD will alternately display "FailFan" and "RAIDReady". There is a beep, but it does not affect the normal operation of the application system.
Solution: Replace the faulty fan online. The replacement process does not affect the normal operation of the application system. The LCD will show "RAID Ready" after replacement.
4. Disk failure: The LCD will alternately display “FailX†and “RAID Readyâ€. “X†is the slot position of the failed disk. There is a beep and the disk failure light is on (red).
Solution: Replace the faulty disk online (without shutdown). Connect the new disk to the disk array (without specifying the location) online (without specifying the location). The disk array will automatically rebuild the data. The beeper will automatically disappear and the LCD will show “AddingXâ€. "%", "X" is the progress of data reconstruction, after the data reconstruction is completed, LCD will display "AddingDone", in this process without manual intervention, does not affect the normal operation of the application system.
DUPLEX STAINLESS STEEL
Duplex Stainless Steels Available
Yuhong Group supplies LDX2101, 2205, Ferralium 255, Zeron 100 and LDX2507 in the form of plate, sheet, strip, bar, pipe, tubing, pipe fittings, flanges and weld wire.
Duplex Stainless Steel Overview
Duplex Stainless Steels, also referred to as austenitic-ferritic stainless steels, are a family of grades with about equal proportions of ferrite and austenite. These steels have a duplex microstructure which contributes to their high strength and high resistance to stress corrosion cracking. Due to their high content of chromium, nitrogen and molybdenum, duplex steels offer good resistance to local and uniform corrosion. Duplex stainless steels have good weldability.
Today, modern duplex stainless steels can be divided into three groups:
Lean Duplex such as LDX2101
Standard Duplex such as 2205, the work-horse grade accounting for more than 80% of duplex usage
Super Duplex such as Ferralium 255 and Zeron 100 and LDX2507
Of the duplex grades, duplex 2205 is the most widely used. However, the super duplex steels like Zeron® 100 and LDX2507 are excellent for servicing severe corrosive environments, such as offshore and marine applications. Lean duplex 2101 is available as an economic alternative to 300 series stainless steels.
What are the Characteristics of Duplex Stainless Steels ?
Very good resistance to uniform corrosion
Very good resistance to pitting and crevice corrosion
High resistance to stress corrosion cracking and corrosion fatigue
High mechanical strength
Good sulfide stress corrosion resistance
Good abrasion and erosion resistance
Good fatigue resistance high energy absorption
Low thermal expansion
Good weldability
In what Applications are Duplex Stainless Steels® used ?
Oil and gas equipment
Offshore technology
Seawater desalination plants
Chemical industry, especially when handling chlorides
Flue-gas cleaning
Desalination plants and seawater systems
Pulp and paper industry
Cargo tanks and pipe systems in chemical tankers
Firewalls and blast walls on offshore platforms
Bridges
Storage tanks
Pressure vessels, reactor tanks, and heat exchangers
Rotors, impellers and shafts
Duplex Boiler Tube,Duplex Seamless Boiler Tube,Duplex Steel Boiler Tube
YUHONG GROUP CO.,LIMITED , https://www.alloypipeline.com