Glossary 99

R

RAID

Redundant Array of Independent Disks (alternative definition Redundant Array of Inexpensive Disks).

RAID 0

A single-level array consisting of two or more equal-sized segments residing on different disks. RAID 0 distributes data evenly across its respective drives in equal-sized sections called stripes. RAID 0 arrays are not redundant.

RAID 1

Single-level array consisting of two equal segments residing on two different drives. Provides redundancy by storing identical copies on two drives. See mirrored array/mirroring.

RAID 10

Spanned array consisting of two or more equal-sized RAID 1 arrays. Provides redundancy by striping and mirroring. Mirroring provides data protection, and striping improves performance. See mirrored array/ mirroring, RAID 0.

RAID signature

The area on each disk reserved for use by the RAID controller.

RAID volume

Concatenates two or more arrays of the same type.

rebuild

Background regeneration of redundant data on a RAID 1.

redundant

The ability of an array to maintain operability when one or more hardware failures occur. RAID 1 is redundant. In the event of a drive failure, redundant arrays can be restored to normal operation by replacing the failed drive and rebuilding the array.

rescan

Process of updating the current screen to show all currently available resources.

S

Serial Attached SCSI (SAS)

An evolution of parallel SCSI to a point-to-point serial interface

Serial ATA (SATA)

A successor to ATA that uses a serial, instead of parallel, interface.

simple volume

A volume made up of disk space from a single disk. It can consist of a single region on a disk, or concatenated multiple regions of the same disk.

single-level array

Array created from one or more segments. See volume, RAID 0, RAID 1, RAID 10.

snapshot

Instantaneous read-only copy of an array at a precise point in time.

stripe

Contiguous set of data distributed across all the disks in an array. A striped array distributes data evenly across all members in equal-sized sections called stripes.

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Adaptec 58300 RAID signature, RAID volume, Rebuild, Redundant, Rescan, Serial Attached Scsi SAS, Serial ATA Sata, Snapshot

1430SA, 1225SA, 1420SA, 1220SA, 48300 specifications

Adaptec, a prominent name in the world of storage solutions, offers a diverse array of RAID controller cards aimed at enhancing data storage and management in both consumer and enterprise markets. Among its acclaimed products are the Adaptec 1220SA, 1430SA, 44300, 1225SA, and 1420SA. These cards ensure increased data protection, improved performance, and greater scalability.

The Adaptec 1220SA is a robust SATA RAID controller designed for small to medium-sized businesses. It supports RAID levels 0, 1, 1E, 5, and 10, providing flexibility for users to optimize data redundancy and performance. With the capability of handling up to four SATA drives, it guarantees an efficient and reliable setup while minimizing potential data loss. The controller also features an intuitive web-based management interface, making it easier to administer and configure.

The Adaptec 1430SA extends similar functionality with enhanced features. It is designed to accommodate up to eight SATA drives and supports the latest 3 Gbps SATA technology. This model includes optional battery backup for preserving critical data during unexpected power outages, ensuring that users maintain data integrity and protection at all times.

In the enterprise domain, the Adaptec 44300 shines as a high-performance RAID controller. It offers support for 12 SATA drives, which allows for expansive storage scalability, crucial for data-intensive applications. The advanced RAID features include support for RAID 6, providing dual parity data protection. The controller is built with a powerful processor and memory, allowing for faster data processing and enhanced throughput.

The Adaptec 1225SA is another noteworthy model. Designed for entry-level RAID applications, it offers a balanced combination of performance and reliability. Supporting up to four SATA drives, the 1225SA is particularly well-suited for environments where uptime is critical, delivering functionalities such as hot-swapping. This feature allows users to replace failed drives without shutting down the system, significantly reducing downtime.

Lastly, the Adaptec 1420SA caters to users who require a cost-effective but reliable storage solution. With support for RAID 0, 1, and JBOD, it is a versatile option for enthusiasts and small businesses. The controller can manage up to two SATA drives, making it ideal for basic applications where simplicity and efficiency are paramount.

Collectively, these Adaptec controllers showcase cutting-edge RAID technology and storage management features, reinforcing their position as reliable options for users ranging from home users to enterprise-level organizations seeking optimal data storage solutions.