
( Brand: Compaq ), ( Manufacturer Part Number: 157299-B21 ), ( Part Type: Adapter )
The Compaq 157299-B21 PCI Dual Host Ultra SCSI Adapter is a high-performance data storage solution designed for use in servers and workstations. This adapter allows for the connection of up to two SCSI devices to a PCI slot, providing increased data transfer rates and improved system performance.
The Compaq 157299-B21 supports Ultra SCSI, which is a fast and reliable storage protocol that can transfer data at speeds up to 160 MB/s. This makes it ideal for use with high-capacity hard drives, tape drives, and other SCSI devices. The adapter also supports SCSI-2 and SCSI-3 interfaces, ensuring compatibility with a wide range of SCSI devices.
The Compaq 157299-B21 is a dual-host adapter, which means that it can be used with two separate SCSI buses. This allows for the connection of multiple devices to each bus, reducing the load on each device and improving overall system performance. The adapter also supports looping, which allows multiple devices to be connected in a circular configuration, further increasing the number of devices that can be connected.
The Compaq 157299-B21 is designed for use in server and workstation environments, and is built to withstand the demands of 24/7 operation. It features a ruggedized design with a metal casing, and is equipped with error correction and data recovery features to ensure data integrity. The adapter also includes a low-profile design, which makes it easy to install in even the most space-constrained systems.
In summary, the Compaq 157299-B21 PCI Dual Host Ultra SCSI Adapter is a high-performance storage solution that allows for the connection of up to two SCSI devices to a PCI slot. Its support for Ultra SCSI, SCSI-2, and SCSI-3 interfaces, as well as its dual-host and looping capabilities, make it an ideal choice for servers and workstations with high-capacity storage requirements. Its ruggedized design and error correction features ensure data integrity and reliability, making it a reliable choice for 24/7 operation.
Pros of buying a Compaq 157299-B21 PCI Dual Host Ultra SCSI Adapter:1. Compatibility: This adapter is designed to work with SCSI devices, making it a reliable choice for systems that require such connectivity.
2. Dual Host: The dual host feature allows for the connection of two SCSI devices to the same adapter, reducing the need for multiple adapters.
3. Ultra SCSI: This adapter supports Ultra SCSI, which provides faster data transfer rates compared to older SCSI standards.
4. PCI Interface: The PCI interface ensures compatibility with a wide range of computers and allows for easy installation.
Cons of buying a Compaq 157299-B21 PCI Dual Host Ultra SCSI Adapter:1. Rarity: SCSI adapters are not as common as other types of storage interfaces, which may make it difficult to find replacement parts or support.
2. Price: SCSI adapters can be more expensive than other types of storage interfaces, which may be a deterrent for some buyers.
3. Limited Compatibility: While the PCI interface ensures compatibility with a wide range of computers, not all systems may support Ultra SCSI.
Conclusion:The Compaq 157299-B21 PCI Dual Host Ultra SCSI Adapter is a reliable choice for systems that require SCSI connectivity. Its dual host feature and support for Ultra SCSI provide fast data transfer rates and the ability to connect multiple devices. However, its rarity and higher price may be a deterrent for some buyers. If you have a system that requires SCSI connectivity and cannot use a more modern interface, this adapter may be a worthwhile investment.
Recommendation:If you require SCSI connectivity and have a system with a PCI interface, the Compaq 157299-B21 PCI Dual Host Ultra SCSI Adapter is a solid choice. However, be prepared to pay a premium for this adapter and to potentially face challenges in finding replacement parts or support if needed.
New unsealed ultra scsi card. Complete with CD and manuals part number b21.