IBM 32H3816 manual Exposed State

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SSA RAID Adapter Installation and User's Guide.

Exposed State

C.2.5.2 Exposed State

A disk array enters the Exposed state when a member disk drive becomes missing (logically or physically) from that array. When a disk array is in the Exposed state, you can reintroduce the missing disk drive, or exchange it for a new one. If necessary, the array management software rebuilds the data that was on the original disk drive before it became missing, then writes that rebuilt data to the replacement disk drive. When the data is correct, the array management software returns the disk array to the Good state.

Read Operations while in the Exposed State: When a read operation is performed on a disk array that is in the Exposed state, the array management software recreates (rebuilds) the data that was contained on the missing disk drive.

Write Operations while in the Exposed State: When a write command is sent to a disk array that is in the Exposed state, the state of the array is changed to Degraded.

_ Copyright IBM Corp. 1996

C.2.5.2 - 1

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Contents Cover Book Cover Document Number S32H-3816-00 Part Number 32H3816Product it supports, be Edition Edition Notice Contents Table of Contents FRONT1 Safety Information Safety Information Copyright IBM Corp FRONT1 SSA RAID Adapter Installation and Users Guide Preface About This Book PREFACE.1 How This Book Is Organized PREFACE.2 Related Publications Introducing the SSA RAID Adapter SSA Adapter Card RAID Operating Systems Before Installing the Adapter Installation Requirements Installing an SSA RAID Adapter Installing the Adapter Card Connecting the Disk Drives Configuring the Disk Drives Installing an Operating System Installing the Device Drivers and Utility Programs Selecting Your Boot Device Configuring SSA Subsystems Running the Configuration Utility VyymmddAccepting New Disk Drives Creating an Array Service Aids Vyymmdd XX Version Main M+ Bus Device Y Adapter New Disks RAID-0 Arrays Free ResourList of RAID-X Arrays Non-VolaArray name Status Serv BusMain M+ Bus + Q Rej SNon a Hot aSSA RAID Adapter Installation and Users Guide Attaching Resources Main Menu New Disks List of System ResourcesSystem ResoSSA UID/Array Name Status F1 Help F9 FlashOnCANUID111 Dealing with Disk-Array Problems Basic Problems Array Problems Disk Service Aids New Disks Link F3 Certify ServiceMode F5 Diagnostics F9 FlashOnChanging Failed Disk Drives BlankSSA RAID Adapter Installation and Users Guide Performing Other Disk-Array Tasks Defining a Hot Spare Select Hot-spare disksSSA Configurator and Service Aids Vyymmdd Version Main M+ List of Hot-spare DisksNo1 Ho2Viewing the Physical Configuration Viewing Resources and Their Attributes Main Menu New+ Fre View Physical Disk Sys+Attr1aaaa Changing Array Attributes View Adapter VPD Disk Service Aids Escape Exit Enter Select Device Y Slot Z Adapter New Disks RAID-0 Arrays Free ResourRAID-5 a List of RAID-X Arrays Xxxxxxxx Yyyyyyy Abou BusExchanging a Member of an Array Escape Exit Enter Select F1 Help F9 FlashOn F10 FlashOffView RAID-X Arrays System Res+ Candidates for RAID-X ArraysUIDxxxxx Status SSA Adapte AttDeleting an Array FF00xxxx Qqqqqqq Getting the Latest Information U.S Canada Markham Montreal TorontoAppendix A. Multiple-Adapter Installations Appendix B. SSA RAID Adapter Service Request Numbers Failed 41064 a 64 MB Dram module Not exchange any Dram Modules yetSSA RAID Adapter Installation and Users Guide SSA adapter microcode has Call for service Hung DffffSSA Loop Configurations that Are Not Valid Appendix C. Introducing SSA and RAID Subtopics Serial Storage Architecture SSA RAID FunctionsSerial Storage Architecture SSA Subtopics SSA Loops and Links Rules for SSA LoopsSSA Loops and Links Subtopics Loops and Data PathsLoops and Data Paths SSA RAID Adapter Installation and Users Guide Loops and Data Paths Copyright IBM Corp 1.1 Rules for SSA Loops RAID Functions Subtopics RAID-0 RAID-1 RAID-5 Hot Spares Disk Array StatesRAID-0 RAID-1 RAID-5 Hot Spares Disk Array States Good State Exposed State Degraded State Rebuilding State Offline State Appendix D. Product Warranty and Notices Warranty Period* Three years Machine SSA RAID Adapter for PC ServersProduction Status IBM Warranty Warranty Service Extent of Warranty Limitation of Liability SSA RAID Adapter Installation and Users Guide IBM Communications Statements Federal Communications Commission FCC Statement Vcci Statement This equipment is Type 1 Data ProcessingRadio interference. VCCI-1 International Electrotechnical Commission IEC Statement Avis de conformité aux normes de lIndustrie Canada Industry Canada Compliance Statement United Kingdom Telecommunications Requirements EC Council Directive Radio Protection for Germany HinweisGood state C.2.5.1 Hot spares defining 5.1 function C.2.4 Information, latest 6.0 information, more 6.0 installing Installing Write while exposed C.2.5.2

32H3816 specifications

The IBM 32H3816 is a notable component in the landscape of computing hardware, particularly designed for high-performance applications within IBM's extensive lineup of server and storage solutions. This specific model serves as a memory module, contributing significantly to the operational efficiency and performance capacity of various IBM systems.

One of the main features of the IBM 32H3816 is its substantial memory capacity, typically offering up to 16GB of RAM. This amount of memory is crucial for handling large datasets and running multiple applications simultaneously, making it ideal for enterprise-level servers, databases, and virtualization environments. The module's capacity supports the growing demands for resource-intensive applications, setting a foundation for better multitasking and system responsiveness.

Another key characteristic is its memory type, which is DDR3 SDRAM. This technology provides faster data transfer rates compared to its predecessors, ensuring a smoother and more reliable performance. DDR3 allows for improved bandwidth, enabling quicker access to data stored in memory. Its lower power consumption is also a significant advantage, making the IBM 32H3816 a cost-effective choice for businesses looking to optimize energy usage while maintaining high performance.

The memory module is designed with advanced reliability features, such as ECC (Error-Correcting Code) capability. ECC ensures that data integrity is maintained by detecting and correcting common types of internal data corruption. This feature is particularly important for mission-critical applications where data accuracy is paramount. Users can expect enhanced stability and reduced risk of system crashes that could lead to data loss.

IBM has engineered the 32H3816 with temperature and voltage tolerance in mind, which makes it suitable for use in various server configurations. These characteristics ensure that the module functions optimally even in challenging environments, thus prolonging its lifespan. The compatibility with multiple IBM server models also adds to its versatility, enabling businesses to upgrade existing systems seamlessly.

In conclusion, the IBM 32H3816 memory module stands out for its robust capacity, advanced technologies, and reliability features. It is an essential component for organizations requiring high-performance computing solutions, offering a blend of efficiency, speed, and stability. With the ongoing evolution of IT demands, investing in quality memory modules like the IBM 32H3816 can significantly enhance overall system performance and productivity.