Control Your Storage with a Ultra SCSI External Interface RAID Controller Card
A RAID controller is the storage controller that uses its own hardware for RAID arrays, and it also does its own calculations using a microprocessor. It can protect data if the computer crashes, and it can improve performance. The RAID controller can work with different drive formats, including SCSI.
What are internal interfaces?
An internal interface is the connection to the parts inside the computer's case. The reference model should match the one on your computer. External interface cards use a cable to connect to a device with a corresponding cable port. Cards can have both external and internal ports.
What are the different internal interfaces used?
The different internal interfaces of controllers are:
- PATA/IDE/EIDE
- SAS
- Ultra2 SCSI
- Ultra2 Wide SCSI
- Ultra-320 SCSI
- Ultra3 SCSI
- Ultra SCSI
- Fast or Fast Wide SCSI
- SCSI-1
What is an SCSI card?
An SCSI card is an interface card that connects storage devices and external peripherals to the computer system. Some controller models are compatible with the SCSI controller which can use ports like PCI or PCI-X. An identifier of the card will let you know what type you will need for your computer.
What are the different RAID levels?
You can choose a RAID controller of different levels. If you are to assume that a single disk holds a terabyte of space, the main RAID disk levels and their specifics are:
- Level 0: If one of the discs is damaged, the information is lost. This disc does, however, give greater speed.
- Level 1: This disk level has 2 disks that hold the information so that if something happens to one, the other stores the information.
- Level 2: This RAID disk has 4 disks for space and 3 dedicated drives for error correction. It calculates the hamming code.
- Level 3: A 3 level disk has a parity disk and 3 discs of terabyte space. The parity disc restores the memory it holds if one of the discs is to be damaged.
- Level 4: Level 4 RAID disk has 3 discs with a single parity disc.
- Level 5: This disk has a distributed parity between the 4 discs.
- Level 6: A level 6 has 2 parity discs distributed between 5 main discs. The records are stored in the parity and can replace failed information at any time.
- Level 10: Finally, a level 10 disk has two RAID 1 systems connected in a RAID 0 setting.