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SATA 3Gb PCIe SATA2-PCIE03 PCI-Express-x1 Card;  1x SATA  (SiI3132)
ex.VAT £4.80 £5.76

Sonnet ThunderLok TB-LOK1 Lok retainer for Thunderbolt cable (Single)
Sonnet TB-LOK1
ex.VAT £7.00 £8.40

Sonnet alternative
eSATA 3Gb ExpressCard SATA2-EC10 ExpressCard-34;  1x/5x eSATA (supports Port-Multipliers)
ex.VAT £8.10 £9.72

eSATA 3Gb ExpressCard
eSATA 3Gb ExpressCard SATA2-EC3421 ExpressCard-34;  2x/10x eSATA (supports Port-Multipliers)
ex.VAT £9.00 £10.80

eSATA 3Gb ExpressCard
Broadcom 3ware Escalade CBL-SFF8087OCF-06M 60cm SATA Forward Cable - Multilane controller SFF8087 to 4x SATA
Broadcom CBL-SFF8087OCF-06M
ex.VAT £14.80 £17.76

3ware Escalade
Broadcom alternative
Broadcom Internal Cable CBL-RA8087SATASB-10M  LSI00274  L5-00197-00 100cm SATA Forward Cable - Multilane controller SFF8087 to 4x SATA (Right Angle)
Broadcom CBL-RA8087SATASB-10M LSI00274 L5-00197-00
ex.VAT £15.20 £18.24

Internal Cable
Broadcom alternative
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Brand-Name Controllers from manufacturers such as Adaptec, Areca, ATTO, HP, LSI, Promise, qLogic & Sonnet

Slot types include : PCI, PCI-X, PCI-Express

Interfaces include :
* SCSI (Ultra160, Ultra320)
* FCAL (FibreChannel 64GFC, 32GFC, 16GFC, 8GFC, 4GFC)
* SAS (12Gb, 6Gb, 3Gb)
* SATA (6Gb, 3Gb, 1.5Gb)

In computer hardware, a host controller, host adapter, or host bus adapter (HBA) connects a host system (the computer) to other network and storage devices. The terms are primarily used to refer to devices for connecting SCSI, Fibre Channel and eSATA devices, but devices for connecting to IDE, Ethernet, FireWire, USB and other systems may also be called host adapters. Recently, the advent of iSCSI has brought about Ethernet HBAs, which are different from Ethernet NICs in that they include hardware iSCSI-dedicated TCP Offload Engines.

A SCSI host adapter connects a SCSI bus to a computer. The host adapter bridges the physical and logical chasm that separates the SCSI bus from the host computer's internal bus. Modern host adapters contain all the electronics and firmware required to execute SCSI transactions, and often include a BIOS that not only allows the host system to boot from a SCSI device, but also facilitates configuration of the host adapter. Typically a device driver, linked to the operating system, controls the host adapter itself.

In a typical parallel SCSI subsystem, each device has assigned to it a unique numerical ID. As a rule, the host adapter appears as SCSI ID 7, which gives it the highest priority on the SCSI bus (priority descends as the SCSI ID descends; on a 16-bit or "wide" bus, ID 8 has the lowest priority, a feature that maintains compatibility with the priority scheme of the 8-bit or "narrow" bus).

The host adapter usually assumes the role of SCSI initiator, in that it issues commands to other SCSI devices.

A computer can contain more than one host adapter, which can greatly increase the number of SCSI devices available.

Major HBA manufacturers are HP, ATTO Technology, Adaptec, and LSI. LSI, Adaptec, and ATTO Technology currently offer PCIe SCSI adapters which fit in new Apple Mac, on Intel PCs, and low-profile motherboards from companies like HP (which now lack SCSI support due to the inclusion of SAS and/or SATA connectivity).

Fibre Channel
Today, the term host bus adapter (HBA) is most often used to refer to a Fibre Channel interface card. Fibre Channel HBAs are available for all major open systems, computer architectures, and buses, including PCI and SBus (obsolete today). Each HBA has a unique World Wide Name (WWN), which is similar to an Ethernet MAC address in that it uses an OUI assigned by the IEEE. However, WWNs are longer (8 bytes). There are two types of WWNs on a HBA; a node WWN, which is shared by all ports on a host bus adapter, and a port WWN, which is unique to each port. Major HBA manufacturers are Emulex, QLogic, LSI, and ATTO Technology.

The term host channel adapter (HCA) is usually used to describe InfiniBand interface cards.

ATA host adapters are integrated into motherboards of most modern PCs. They are often improperly called disk controllers. The correct term for the component that allows a computer to talk to a peripheral bus is host adapter[citation needed]. A proper disk controller only allows a disk to talk to the same bus.

SAS or serial-attached SCSI is the current connectivity to replace the previous generation parallel-attached SCSI (PAS) devices. Ultra320 was the highest level of parallel SCSI available, SAS has extended and increased the performance of this technology.

SATA is a similar technology from the aspect of connection options. HBAs can be created using a single connector to connect both SAS and SATA devices.

Major SAS/SATA HBA manufacturers are Adaptec, HP, QLogic, LSI and ATTO Technology.

External Serial ATA disk enclosures and drives are increasingly common in the consumer computing market, but many SATA compatible motherboards and disk controllers do not include external SATA ports. As such, adapters to connect external SATA devices to ports on an internal SATA bus are commonly available.

This article is licensed under the GNU Free Documentation License. It uses material from the following Wiki article(s) :
* Host_Bus_Adapter

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