TABLE 3-9RAID Level Configurations

RAID

 

 

Level

Short Description

Detailed Description

 

 

 

RAID

Striping/

• Also called RAID 10 or 0+1.

1

Mirroring

• A minimum of two drives is required for RAID 1;one for the

 

Mode

user data and one for the mirrored data.

 

 

• Offers the best availability high performance and the best

 

 

data availability. Data is written to two duplicate disks

 

 

simultaneously. If one of the disk drives in a disk-pair fails,

 

 

the system can instantly switch to the other disk without

 

 

any loss of data or service. However, only half of the drives

 

 

in the volume group are available for user data.

 

 

• Uses disk mirroring to make an exact copy from one drive

 

 

to another drive.

 

 

• A single drive failure causes associated volumes become

 

 

degraded, but the mirror drive allows access to the data.

 

 

• Can survive multiple drive failures as long as no more than

 

 

one failure exists per mirrored pair.

 

 

• A drive-pair failure in a volume group causes all associated

 

 

volumes to fail and data loss could occur.

RAID

High

• Both user data and redundancy data (parity) are striped

3

Bandwidth

across the drives.

 

Mode

• The equivalent of one drive's capacity is used for

 

 

redundancy data.

 

 

• Good for large data transfers in applications such as

 

 

multimedia or medical imaging that write and read large

 

 

sequential chunks of data.

 

 

• A single drive failure in a volume group causes associated

 

 

volumes to become degraded, but the redundancy data

 

 

allows access to the data.

 

 

• Two or more drive failures in a volume group cause all

 

 

associated volumes to fail and data loss could occur.

RAID

High I/O Mode

• Both user data and redundancy data (parity) are striped

5

 

across the drives.

 

 

• The equivalent of one drive's capacity is used for

 

 

redundancy data.

 

 

• Good for multi-user environments such as database or file

 

 

system storage, where typical input/output (I/O) size is

 

 

small and there is a high proportion of read activity.

 

 

• A single drive failure in a volume group causes associated

 

 

volumes to become degraded, but the redundancy data

 

 

allows access to the data.

 

 

• Two or more drive failures in a volume group causes all

 

 

associated volumes to fail and data loss could occur.

 

 

 

Chapter 3 Storage Arrays 3-59

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Sun Microsystems 5310 NAS manual Raid
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5310 NAS specifications

Sun Microsystems, known for its innovative computing solutions, launched the Sun 5310 Network Attached Storage (NAS) system, which marked a significant advancement in the realm of storage solutions in the early 2000s. The 5310 NAS was designed to provide high-performance, reliable, and scalable storage tailored for enterprise environments.

One of the standout features of the Sun 5310 NAS is its file-serving capabilities, which support multiple protocols, notably NFS (Network File System) and CIFS (Common Internet File System). This dual-protocol support allowed organizations to seamlessly integrate the NAS into diverse IT ecosystems, facilitating interoperability between UNIX, Linux, and Windows systems. The enhanced file-sharing capabilities made it an ideal solution for businesses with mixed operating environments.

The Sun 5310 NAS incorporates cutting-edge technologies to ensure high availability and data integrity. The system utilized a RAID (Redundant Array of Independent Disks) technology, providing various RAID levels to protect against data loss while optimizing performance. Additionally, the device featured hot-swappable drives, enabling maintenance and upgrades with minimal downtime, a crucial factor for business continuity.

Equipped with advanced management software, the Sun 5310 NAS offered users an intuitive interface for monitoring storage health and performance. This software included comprehensive reporting functionalities that allowed IT administrators to oversee usage patterns and capacity planning efficiently.

Scalability was another defining characteristic of the Sun 5310 NAS. The system could easily expand with additional storage modules, accommodating the growing needs of an organization without the necessity for complete system overhauls. This flexibility ensured that businesses could adapt their storage solutions to meet evolving data storage needs without incurring significant costs or disruptions.

In terms of performance, the Sun 5310 NAS featured high I/O throughput achieved through its robust hardware architecture and optimized file serving capabilities. This performance baseline was crucial for organizations that relied on heavy data workloads and required rapid access to information.

In summary, the Sun 5310 NAS from Sun Microsystems embodied a forward-thinking approach to network storage, blending reliability, scalability, and multi-protocol support. Its user-friendly management software, combined with the robustness of RAID technology and hot-swappable drives, made it a preferred choice for enterprises looking to streamline their storage infrastructure while safeguarding critical data.
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