256 KB, Package Qty: 1
The process of transferring data to and from disk storage includes storing the data temporarily in cache memory located on the RAID array controller that is managing the data transfer. Write cache can improve the performance of any RAID level by combining two or more adjacent write requests into a single request for a disk drive. Once a data write is completed, the cache must be able to protect this data in the event of a power loss before the write data is moved to the drives. If external power to the system is interrupted, if the host computer fails, or if the RAID controller fails, battery power maintains data in the cache long enough for the user to recover the data and preserve the integrity of business-critical information. Depending on the capacity of the batteries when external power is lost, battery-backed cache is typically capable of retaining the integrity of data in the cache for several days.

Hewlett Packard Compaq (305416-001) (305416001) Cache Memory

256 MB, SDRAM, Package Qty: 1

512 MB, SDRAM, Package Qty: 1
Provides increased performance and worry-free battery backed write cache data protection for all server internal storage needs. Battery backed write cache for increased controller performance Battery charge of 72 hours and battery life of 3 years ECC protection, battery-backed, and removable.

128 MB, For: PC systems, Package Qty: 1
Compaq is a leading global provider of information technology products, services and solutions for enterprise customers. Compaq designs, develops, manufactures and markets information technology equipment, software, services and solutions, including industry-leading enterprise storage and computing solutions, fault-tolerant business-critical solutions, communication products, personal desktop and notebook computers, and personal entertainment and Internet access devices.

64 MB, For: PC systems
This is a 64-MB Cache Upgrade Kit for Fibre Channel Array Controller.

256 MB, For: PC, Unix systems, Package Qty: 1
Compaq brings you the best in new technologies and helps you to keep pace with a quickly developing computer world. The cache memory modules increase the overall performance of the systems central processor unit storing the most frequently used information thus optimizing the time needed to access the instructions or, less frequently, data.

64 MB, SDRAM, Package Qty: 1

128 MB, Package Qty: 1

Compaq 351580-B21 CPQ 128MB BBWC Enabler Cache Memory