!DEU with additional hot-swap SCSI hard disk drive bays for mounting up to eight SCSI hard disk drives in easily removable drive carriers. Each drive has a set of three lights to indicate the fault or other status: power-on (green LED), activity (green LED), and fault (yellow LED).

Disk Array

The optional disk array controller board is a PCI board (standard on tower-based systems) that improves data reliability. The disk array controller board allows the hard disk drives in the SCSI hard disk drive bays and additional optional disk expansion unit to support disk array configuration RAID levels 0, 1, and 5.

RAID is an acronym of “Redundant Arrays of Inexpensive (Independent) Disks”. It logically integrates several hard disks to appear to the system as only one disk drive.

Using the disk array method, the large-capacity hard disk can be configured with several inexpensive and small-capacity hard disks. It can also enhance the drive by improving the reliability and supporting an automatic rebuilding function.

All RAID levels are common in their basic operation due the fact that several hard disks can be recognized as one disk drive. However, performance, cost, and use are conditions that vary according to the RAID level. You should select an appropriate configuration that is suitable for your system.

Features and selection examples of different RAID levels are shown below.

Level

Definition

Redund-

Feature

Suitable

Minimum

 

 

ancy

 

application

No. of disks

 

 

 

 

 

 

RAID0

Striping

No

Access: high-speed.

Application that

2

 

 

 

 

needs high

 

 

 

 

 

performance for

 

 

 

 

 

non-critical data

 

 

 

 

 

 

 

RAID1

Mirroring

Yes

Dual disk system.

Application that

2

 

(or shadowing)

 

 

needs to store

 

 

 

 

Read mode: high-

important files

 

 

 

 

speed

on main system

 

 

 

 

 

drive

 

 

 

 

Write mode: slower

 

 

 

 

 

than RAID 0

 

 

 

 

 

 

 

 

RAID5

Striped data

Yes

Parity data.

Application that

3

 

and parity

 

Transfers large

needs to store

 

 

 

 

important data.

 

 

 

 

amount of data.

 

 

 

 

 

 

 

 

 

Write mode: slower

Application of

 

 

 

 

read-intensive

 

 

 

 

than RAID 0

 

 

 

 

type

 

 

 

 

 

 

 

 

 

 

data searching.

 

 

 

 

 

 

 

This unit supports other RAID levels as well. However, it is not recommended to use them unless absolutely necessary.

System Overview 1-25

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NEC 5800/180Ra-7 manual Disk Array, RAID0, RAID1, RAID5

5800/180Ra-7 specifications

The NEC 5800/180Ra-7 is a high-performance server model that represents a significant advancement in the realm of enterprise computing. Launched by NEC, a renowned leader in information technology, this server is designed for critical business applications and is tailored to meet the demanding requirements of modern data centers.

At the heart of the NEC 5800/180Ra-7 is its powerful computing architecture. It is equipped with a robust processor that offers multiple cores and threads, allowing for efficient multitasking and enhanced processing capabilities. This makes it suitable for heavy workloads, including database management, cloud computing, and virtualization services. The server's architecture ensures low latency and high throughput, enhancing the performance of applications running on it.

One of the standout features of the NEC 5800/180Ra-7 is its scalability. It supports a variety of configurations, enabling businesses to expand their resources as needed. This scalability is crucial for organizations that experience fluctuating demands or are in a growth phase, as it allows for easy upgrades without the need for a complete system overhaul.

In terms of memory and storage, the NEC 5800/180Ra-7 comes with a flexible architecture that supports large amounts of RAM and multiple storage options, including SSDs and HDDs. This flexibility ensures that businesses can tailor their server’s memory and storage capacities to fit specific applications and workloads, leading to better performance and faster data access times.

The server also includes advanced redundancy features to ensure high availability. With multiple power supplies, cooling systems, and RAID configurations, the NEC 5800/180Ra-7 minimizes downtime and ensures continuous operation, which is critical for mission-critical applications.

NEC has also integrated smart energy management technology into the 5800/180Ra-7. This technology helps reduce power consumption while maintaining optimal performance levels, making it a more environmentally friendly choice for data centers.

Furthermore, the server is built with security in mind. It includes various security features such as secure boot, TPM (Trusted Platform Module), and hardware-based encryption to protect sensitive data from unauthorized access and cyber threats.

In summary, the NEC 5800/180Ra-7 offers a combination of performance, scalability, energy efficiency, and security. With its advanced features and technologies, it serves as an ideal solution for enterprises looking to enhance their computing capabilities in today’s data-driven landscape. Its design caters to the evolving needs of businesses, making it a reliable choice for diverse applications across various industries.