Owners Manual
Table Of Contents
- Precision 3640 Tower Service Manual
- Working on your computer
- Technology and components
- Major components of your system
- Disassembly and reassembly
- Recommended tools
- Screw list
- Chassis rubber feet
- Cover
- SD card—optional
- Bezel
- Hard drive
- PSU hinge
- Graphics card
- Memory module
- Speaker
- Coin cell battery
- Power supply unit
- Optical drive
- WLAN module and SMA antenna
- IO panel
- Solid state drive
- Power button module
- Heatsink assembly
- Voltage regulator heat sink
- Front fan
- System fan
- Optional IO card
- Processor
- Intrusion switch
- System board
- Troubleshooting
- Getting help and contacting Dell
- Cable cover
- Dust filter
3. RAID 5 (Striping with Parity):
In this RAID level, data is stripped into blocks and spread across three or more storage devices. Each block contains the data
and a parity for fault tolerance. In an event of a drive failure, the parity helps build the lost piece of data. To further enhance
the write performance, IRST uses Volume Write-Back Cache and Coalescer. The Volume Write-Back allows writes to be
buffered, and Coalescer allows multiple write requests to be combined to reduce the overhead on parity calculation.
4. RAID 10 (Striping and Mirroring)):
RAID 10 is created, mirroring (RAID 1) the stripped (RAID 0) array. This RAID level uses four or more storage devices. It has
great reliability like a RAID 1 and performance like a RAID 0.
RAID-ready
A RAID-Ready configuration allows migration from one non-RAID SATA drive to a SATA RAID configuration.
NOTE: A reinstall of the operating system is not required for the migration.
A RAID-Ready system must meet the following requirements:
● Supported Intel Chipsets
● One Serial ATA (SATA) hard drive
● RAID controller enabled in the system setup
● BIOS that includes the IRST option ROM
12
Technology and components