NStor Technologies Disk Array Enclosure, CR8e manual Glossary

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A Glossary

The following terms are used throughout this manual and may be helpful

background information on the technology.

Asynchronous

Operations that bear no relationship to each other in time

Operations

and can overlap. The concept of asynchronous I/O

 

operations is central to independent access arrays in

 

throughput-intensive applications.

Cache Flush

Refers to an operation where all un-written blocks in a

 

Write-Back Cache are written to the target disk. This

 

operation is necessary before powering down the system.

Channel

Refers to one of the SCSI bus connectors on the

 

controllers or termination interface cards.

Consistency Check

Refers to a process where the integrity of redundant data

 

is verified. For example, a consistency check of a mirrored

 

drive will make sure that the data on both drives of the

 

mirrored pair are exactly the same. For RAID level 3 and 5

 

redundancy, a consistency check will involve reading all

 

associated data blocks, computing parity, reading parity,

 

and verifying that the computed parity matches the read

 

parity.

Disconnect/Reconnect

Disconnect is a function that allows a target SCSI device

 

(typically a disk drive that received a request to perform a

 

relatively long I/O operation) to release the SCSI bus so

 

that the controller can send commands to other devices.

 

When the operation is complete and the SCSI bus is

 

needed by the disconnected target again, it is reconnected.

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Contents Page NStor Corporation, Inc Compliance Information Statement Regulatory InformationFCC Radio Frequency Interference Statement Power Cord Selection Contents Using the CR8e InstallationTroubleshooting MaintenanceIndex 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 Cooling Fans ComponentsHot Swap Disk Drives Door Lock Hot Swap Power SuppliesPower Switch Interface Card Power Cord Connector and FuseConfiguration Modules Operator Control Panel Controlling and MonitoringLEDs Power-On LEDStatus Indicator LEDs Activity LEDs Status LEDsSAF-TE Card Alarm SpeakerFault LEDs 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 Cables Cabling ConfigurationGeneral 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 Power-On Self Test Using the CR8eNotifications and Error Conditions RAM Checksum Failure Firmware Error ConditionsScsi Bus Access 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.