NStor Technologies Disk Array Enclosure, CR8e manual Raid

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Glossary

Partition

An array virtual disk made up of logical disks rather than

 

physical ones. Also called logical volume.

Physical Drive

A physical array (or drive) is a collection of physical disks

 

governed by the RAID management software. A physical

 

drive appears to the host computer as one or more logical

 

drives.

RAID

(Redundant Array of Independent Disks) An approach to

 

using multiple low cost drives as a group to improve

 

performance, yet also provide a degree of redundancy that

 

makes data loss remote.

RAID 0

Block “striping” is provided, yielding higher performance

 

than is possible with individual drives. This level does not

 

provide any redundancy.

RAID 1

Drives are paired and mirrored. All data is 100%

 

duplicated on an equivalent drive.

RAID 10

RAID 10 is a combination of RAID levels 0 and 1. The

 

data is striped across disks as in RAID 0. Each disk has a

 

mirror disk, as in RAID 1.

RAID 3

Data is striped across several physical drives. For data

 

redundancy one drive is encoded with rotated XOR

 

redundancy.

RAID 30

Data striping of two or more RAID 3 arrays. RAID level

 

30 is a combination of 0 and 3.

RAID 5

Data is striped across several physical drives. For data

 

redundancy drives are encoded with rotated XOR

 

redundancy.

RAID 50

RAID level 50 is a combination of RAID level 0 and 5.

AM RAID Controller

This refers to the controller card that routes data to

 

and/or from the CPU. Disk array controllers perform all

 

RAID algorithms onboard the controller.

Rebuild

The regeneration of all data from a failed disk in a RAID

 

level 1, 3, 5, or 6 array to a replacement disk. A disk

 

rebuild normally occurs without interruption of

 

application access to data stored on the array virtual disk.

Rotated XOR

This term (also known as “parity”) refers to a method of

Redundancy

providing complete data redundancy while requiring only

 

a fraction of the storage capacity for redundancy. In a

 

system configured under RAID 3 and 5, all data and

 

parity blocks are divided between the drives in such a way

 

that if any single drive is removed (or fails), the data on it

 

can be reconstructed using the data on the remaining

 

drives. (XOR refers to the Boolean “Exclusive-OR”

 

operator.)

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Contents Page NStor Corporation, Inc FCC Radio Frequency Interference Statement Regulatory InformationCompliance Information Statement Power Cord Selection Contents Maintenance InstallationUsing the CR8e TroubleshootingIndex Glossary Technical InformationContents Welcome PrefaceDrive Support FeaturesRegistering Your Product Where to Find AnswersViii Getting Started Fuse CR8e Subsystem at a GlancePower Supply #1 Hot Swap Disk Drives ComponentsHot Swap Cooling Fans Power Switch Hot Swap Power SuppliesDoor Lock Interface Card Power Cord Connector and FuseConfiguration Modules Operator Control Panel Controlling and MonitoringStatus Indicator LEDs Power-On LEDLEDs Activity LEDs Status LEDsFault LEDs Alarm SpeakerSAF-TE Card SAF-TE Card Setup InstallationGuidelines System RequirementsRack-Mount Subsystem Assembly Rack-Mount Subsystem Assembly Component Installation Drive Label Upper left bay, four drive slots Installing the Third Power Supply General Cabling ConfigurationCables Termination Dual-Bus Enclosure Ultra Wide Scsi ModeTOP Single-Bus Enclosure Installation Single Dual-Bus Enclosure Fast Wide Scsi ModeUltra Scsi Two Dual-Bus Enclosures Installation Bus Module installed Installation Two Single-Bus Enclosures Installation TOP Dual-Bus Enclosure with Two Single-Bus EnclosuresInstallation Other Configurations Notifications and Error Conditions Using the CR8ePower-On Self Test Scsi Bus Access Failure Firmware Error ConditionsRAM Checksum Failure SAF-TE LED Matrix LED DescriptionsStartup Screens Operator Control PanelSubsystem Status Icon Power Supply Error ConditionsHardware Menu Main MenuConfiguration Info Component StatusPost Results Internal Temp Scsi ID Menu Options MenuSET Upper Slot IDS SET Safte ID Lower Reset Default IDS Reset Default IDs Selection Heat Threshold Safte Chain ID Change Passcode Unlock Options Common Enclosure Problems TroubleshootingCommon Scsi Bus Problems Scsi Bus Symptom Probable Cause Solution LED Status Reason Solution Common Problems and Interpreting the LED IndicationsReplacing a Disk Drive MaintenanceReplacing a Power Supply Replacing a Power Supply Replacing the Cooling Fans Replacing an I/O Interface Card Replacing a Fuse Replacing the CR8e Cabinet Maintenance Glossary Glossary RAID SAF-TE Technical Information SpecificationsCR8e ConnectorsSignal Name Pin Conductor Jumpers JP3 SCSI-to-SCSI IDs JP2 SCSI-to-SCSI ConfigurationJP4 Scsi ID Settings Pins 1 Pins 3 Drive Spinup Mode JP5 SCA Remote/Delay startJ15 FAN and J17 OEM FAN Index RAID SAF-TE Index

CR8e, Disk Array Enclosure specifications

NStor Technologies has long been recognized for its innovative storage solutions, and the CR8e Disk Array Enclosure is a prime example of this legacy. Designed to meet the growing demands of data storage in enterprise environments, the CR8e offers a robust and efficient platform for managing and securing critical data.

One of the standout features of the CR8e is its impressive capacity. Supporting up to eight 3.5-inch or 2.5-inch drive bays, it allows for flexibility in choosing the right drives, including SATA, SAS, and SSD options. This adaptability not only meets varying performance requirements but also ensures that organizations can tailor their storage solutions based on specific operational needs.

The CR8e is designed with redundancy in mind, featuring hot-swappable drive bays that enable users to replace drives without downtime, thus ensuring continuous operation. Additionally, its dual-redundant power supplies and cooling fans provide enhanced reliability. This feature is crucial for businesses that cannot afford interruptions, ensuring that their data remains secure and accessible at all times.

In terms of connectivity, the NStor CR8e supports multiple interface options, including both SAS and SATA, catering to different storage protocols and enhancing compatibility with existing systems. It is equipped with advanced RAID functionalities, supporting various RAID levels such as 0, 1, 5, and 6. This capability allows users to choose the most suitable data protection and performance strategy for their environment.

Management is made simple thanks to its user-friendly interface, which offers ease of configuration and monitoring. The enclosure also provides comprehensive diagnostic and reporting features, assisting administrators in maintaining optimal storage conditions and prolonging the lifespan of the equipment.

Furthermore, the CR8e is designed with scalability in mind. As data storage needs grow, organizations can easily expand their storage capacity by adding more enclosures. This feature allows businesses to future-proof their investments in storage technology.

NStor Technologies has incorporated cutting-edge technologies in the CR8e to ensure high-speed data transfer rates, reducing latency and enhancing overall system performance. The enclosure’s design emphasizes thermal efficiency, ensuring that the internal components are kept at optimal temperatures even during high-performance operations.

In summary, the NStor Technologies CR8e Disk Array Enclosure is a versatile and powerful solution for organizations seeking to enhance their data storage capabilities. With its robust features, excellent scalability, and emphasis on reliability, it stands out as an ideal choice for enterprises focused on safeguarding their data assets.