RAID 0

RAID 0 is commonly called striping. This was not originally defined as a RAID level but has since come into popular use. In this array configuration, data is written sequentially across the available disks and no redundancy is provided. RAID 0 config- urations provide very high performance but relatively low reliability. RAID 0 is the best choice when DSA controller cards are duplexed. See also striping.

RAID 1

RAID 1 is commonly called mirroring. RAID 1 also uses striping, so RAID 1 may be regarded as the mirroring of RAID 0 configurations. RAID 1 is the best choice in high-availability applications that require high performance or relatively low data ca- pacity. See also mirroring, RAID 10, striping.

RAID 4

RAID 4 is commonly called guarding. It uses data striping, like RAID 0, but adds a single, dedicated parity drive. The parity data stored on this drive can be used to recover data lost from a single failed drive. RAID 4 configurations write data slowly because parity data has to be generated and written to the parity drive, and the generation of the parity data frequently re- quires reading data from multiple physical drives. See also guarding and striping.

RAID 5

RAID 5, like RAID 4, is commonly called guarding. RAID 5 is identical to RAID 4, except that the parity data is distributed evenly across all physical drives instead of a parity drive. In configurations using a large number of physical drives in which a large number of simultaneous small write operations are being performed, RAID 5 offers potentially higher perfor- mance than RAID 4. RAID 4 and RAID 5 configurations are appropriate in high- availability applications where performance is less critical or where high data capacity is required. See also guarding.

RAID 10

RAID 10 is a mirroring technique in which data is duplicated across two identical

RAID 0 arrays or hard-disk drives. All data on a physical drive in one array is duplicat- ed, or mirrored, on a drive in the second array. Mirroring offers complete redun- dancy of data for greater data security. See also mirroring, RAID 1, and striping.

rpm

Acronym for revolutions per minute.

SCSI

Acronym for small computer system in- terface. An I/O bus interface with faster data transmission rates than standard ports. You can connect up to seven devic- es (15 for some newer SCSI types) to one SCSI interface.

SDS

Abbreviation for Scalable Disk System.

sector

The fundamental unit of data access for a hard-disk drive. For PC-compatible sys- tems, a sector is usually 512 bytes. See also block and block size.

SMB

Acronym for system management bus.

SMM

Abbreviation for server monitor module. An ISA expansion card that provides a mo- dem interface for out-of-band monitoring and control of a server.

SMP

Abbreviation for Symmetric

Multiprocessing.

SMS

Abbreviation for Systems Management Server.

SNMP

Abbreviation for Simple Network Man- agement Protocol.

SQL

Abbreviation for Structured Query Language.

striping

In composite drivers with two or more physical drives, the drive array

Glossary 5

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Dell NNM SE 1.2 manual Smb

NNM SE 1.2 specifications

Dell Network Node Manager (NNM) SE 1.2 is an advanced network management solution designed to help organizations effectively monitor, troubleshoot, and manage their IT infrastructure with ease. This powerful tool is tailored to enhance network availability, performance, and security, enabling IT teams to quickly respond to any issues that may arise while maintaining operational efficiency.

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In summary, Dell NNM SE 1.2 is an indispensable tool for organizations seeking to streamline their network management processes. With its visualization capabilities, robust event and analytics management, seamless integration, comprehensive reporting, and enhanced security features, it empowers IT teams to maintain a resilient and efficient network infrastructure.