Manuale d’uso / di manutenzione del prodotto 9960 del fabbricante Hitachi
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H itachi Data Systems ii.
T able of Contents T able of Contents ......................................................................................................................................iii T able of F igures ........................................................
Adv anced Cache Algorithms of the Lightning 9900 Series ......................................................................18 H itachi F lashAccess Allows Datasets to be P ermanently Placed in Cache ................................................18 R ead-ahead for H igh-performance Sequential Reads .
Chapter 9 – The Lightning 9900 Series Software Solutions Ar e the Best in the W orld ______________33 I ncreased IT service levels in availability and performance through B usiness Continuity Planning (BCP) software and services ....................
H itachi N anoCopy Implementation Service ......................................................................................46 Continuous A vailability Service .......................................................................................
vii T able of F igur es F igure 1 The 9960 provides for exploding gr owth and data consolidation while the 9910 provides for managed gr owth and open system exploitation. ................................................2 F igure 2 The Hitachi Lightning 9960 S eries ’ Hi-S tar internal switched-fabric architecture.
H itachi Data Systems viii T ables T able 1 Comparison of the Lightning 9900 series models. ................................................................2 T able 2 Bandwidth of supported interfaces of the Lightning 9900 Series. ....................
1 I ntroduction The Only Switched-Fabric Storage Architectur e in the World The Hitachi F reedom S torage ™ Lightning 9900 ™ S eries internal switched-fabric storage architecture is consider ed the most advanced design available in the world for open systems and mainframe data.
Product Characteristics 9960 9910 Number of Cabinets 2-7 1 Maximum Cache Capacity 32 GB 16 GB Number of Fibre Channel/ESCON ® Ports Up to 32 Up to 24 Number of FICON Ports Up to 16 Up to 12 Number of.
At the heart of the Lightning 9900 ™ S eries ’ enormous capacity for throughput lies the Hi-S tar ™ architecture. This network of interconnecting high-speed links to system components provides an unequaled internal aggr egate bandwidth of 6.4GB/sec (gigabytes/sec) in the 9960.
Comparison to the Shared Bus Ar chitecture of the Hitachi Freedom Storage ™ 7700E U nlike the shared common bus architecture of previous generation storage products, such as the 7700E (as shown in F igure 3 for reference to a shar ed bus architecture), H i-S tar ™ is designed to truly scale in both capacity and per formance.
Other Information Sources A vailable from Hitachi Data Systems ® A dditional information on the enterprise storage market, including an in-depth ov er view of the technically advanced and unsurpassed software solutions available from H itachi, is available in the companion publication, the H itachi Software Solutions G uide .
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7 The Lightning 9900 S eries Pa ckaging Model 9960 Packaging The Lightning 9960 ™ is available in a two to seven cabinet configuration (as shown on the cover of this guide), depending on connectivity and capacity needs.
Model 9960 Array Frames Array frames 1-4 of the 9960 contain up to 96 Hard D isk Drive Assemblies (HDDs) and communication interfaces to the Control F rame. Array frames 5-6 contain up to 64 drives for a total of 512 drives for a maximum configured system.
Cables carry 48-volt main system power from the back of the Control F rame and Array F rame where the power is converted to the required v oltages. D ifferent A C power cord options allow all Lightning 9900 ™ S eries models to connect with the different electrical outlet configurations used around the world.
The System Monitoring Network of the Lightning 9900 ™ Series The Lightning 9900 ™ S eries systems are designed with a system-monitoring networ k. The system monitoring cables are connected to all .
11 Fr ont-end Design of the H itachi Lightning 9900 S eries CHIPs Support Fibre Channel Host and ESCON ® or FICON Host Connectivity and Scalability The Lightning 9900 ™ S eries supports both F ibre Channel for open systems and ESCON ® or FICON for S/390 ® compatible platforms as shown in F igure 8.
About the Fibre Channel Interface Boar ds Each F ibre Channel Interface Board, as shown in F igure 9, has four Interface Pr ocessors 2 for management of connectivity to the host. F igur e 9 – A Fibr e Channel host adapter board and its major hardwar e components.
There are four ports for each interface board or a total of 32 host interfaces for a fully configured system. An ESCON interface board is sho wn in F igure 10.
Bandwidth of Supported Host Interfaces The bandwidth of interfaces supported by the Lightning 9900 ™ S eries is shown in T able 2. Supported Interface Bandwidth Fibre Channel Adapters 100MB/sec or 200MB/sec ESCON ® Adapters 17.
15 H i-S tar Architectur e – An I nternal S witched H ierarchical S tar N etwork The Internal Hi-Star Architecture The internal Hi-S tar architecture consists of two separate networks, the Cache H ierarchical S tar Networ k (C-HSN) and the Control M emory Hierarchical S tar Network (CM-HSN).
The Cache Switch Provides Non-blocking Switched Access to Cache At the heart of the C-HSN is the Cache Switch (CSW). T ogether , these four switches (in the 9960) form the internal start using parallel switch fabric bus (PSFB) of the C-HSN.
In a shared bus storage system, the number of internal simultaneous processor operations that can occur is equal to the number of buses on the backplane. The shared buses are used by all host channels to communicate between the pr ocessors on the host adapters and cache memory .
The 9960 Provides 32GB of Fully Addr essable Cache The 9960 supports up to 32GB of data cache, all directly addressable. Separate cache modules (up to 1.5GB) are used for control storage. Competitive systems use their cache for both data and control information, limiting the amount of usable data cache.
control memory in its “ split” configuration. Again, control memory is mirrored. This path topology is used to facilitate this mirrored architectur e. E ither way the bandwidth is calculated in the CM-HSM, the bandwidth is 3.2GB/sec total when all of the processor modules are installed.
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21 H igh P erformance Back-end D esign High-speed Back-end Design Ne w Hitachi high-performance back-end drives ar e available with the Lightning 9900 ™ S eries. The drives are attached via F ibre Channel – Arbitrated Loops (FC-AL). Eight 100MB/sec FC-AL connect to dual ported drives for each ACP pair .
These new dual-ported/dual-active F ibre Channel disk drives, combined with the technology built into the ACP pair , allow the back end of the Lightning 9900 ™ S eries to use all eight FC-AL paths in an ACP pair for both performance and fault tolerance.
23 Capacities and RAID Architectur e Storage Capacity of the Lightning 9900 ™ Series The Lightning 9900 ™ S eries supports an unmatched range of capacities as shown in T able 3.
High-density Disk Drive Assemblies (HDDs) The disk drives used in the Hitachi Lightning 9900 ™ S eries are specially designed for high availability and performance by Hitachi Limited. Each driv e has the industry unique featu r e of suppo r ting dual acti v e po r ts.
H itachi H igh-A vailability S oftware I mpro ves A pplication Ser vice Levels An Overview of High-Availability (HA) Computing Softwar e It is increasingly important for a business to support continued access to global information 24 hours a day , 7 days a week.
• Dual data paths and dual control paths connecting every component. • Mirror ed cache for all write data instead of single image cache. 3 • GDPS support.
There are four basic types of high-av ailability middleware that can reduce downtime in the event of a data path or host failure. The Lightning 9900 ™ suppor ts each classification of middleware: 1.
4. Parallel Database Clustering This type of middleware is a special version of host failo ver middleware, which supports major parallel database ser vers like Oracle ® P arallel Server , Informix ® XPS, and Sybase ® MPP .
H itachi H igh A vailability Softwar e Improv es Application S ervice Levels 29 Standard Redundant Fans for Cooling The Lightning 9900 ™ provides fully r edundant fans for uninterrupted cooling to all components of the system. The speed and operation of these fans are monitored by the environmental monitoring system.
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31 Pe r formance Considerations T ruly Scalable Performance B ased on the internal switched-fabric H i-S tar ™ architecture, the Lightning 9960 ™ shows unmatched performance scalability . The mor e capacity and connectivity added to the 9960, the more total bandwidth increases.
Internal Switching Overcomes the Limitations of Shared Bus Ar chitectures It can be seen from F igure 24 that a reduction occurs in the OL TP per formance for the shared bus architectur e of the 7700E system. This occurs at P oint 1, when the DSS application begins at about 45 minutes into the test.
33 The Lightning 9900 S eries S oftware S olutions Ar e the B est in the W orld C ustomers and analysts r egard the H itachi Freedom S torage Lightning 9900 ™ S eries as the most advanced products in the enterprise storage system market.
The Hitachi F reedom S torage ™ software solutions for Lightning 9900 ™ Seri es systems support an enterprise’ s strategic goal of accessing any information, on any computer , located anywhere, at any time.
To this already robust platform, H itachi Data Systems adds a number of solutions to ensure quick reco ver y from acts of nature, human errors, application errors, and malicious attacks. In the world of e-commerce, it is no longer enough to have a backup copy of one ’ s data; businesses must also plan for rapid reco very from such outages.
Business Goals served by Copy Software W orldwide commerce and industry have become increasingly dependent on IT r esources to conduct business. E ven a temporary loss of critical applications or data access can cause serious economic impact to a company , and an extended outage can threaten a company ’ s existence.
Centralized and O pen S ystems Management S oftware S implifies IT O perations A powerful and open systems management philosoph y The Hitachi F reedom S torage ® software solutions support an enterpr.
H iCommand ™ is an important H itachi management tool in that it provides a comprehensive storage management softwar e framework that enables an enterprise to manage all supported Hitachi storage products and many H itachi software solutions: 1. H i Command ™ for storage management including alerts, configuration parameters, LUN mapping.
The components of H i Command ™ H iCommand ™ consists of thr ee components: 1. The H iCommand ™ Ser ver r esides on any Windows ® NT/2000, or S un S olaris server , and connects to the Lightning 9900 ™ S eries system(s) o ver a private L AN.
Hitachi Resource Manager ™ 9000 The following is a summary list of the many ways in which the Hitachi Resour ce M anager ™ can simplify IT operations, impro ve availability and performance ser vic.
information at the touch of a button. The robust GUI-oriented command screen for H itachi G raph-T rack ™ is shown in Figur e 26. Running on a PC attached to a dedicated L AN, Hitachi G raph-T rack .
H itachi L UN Manager also features logical unit size expansion that dramatically improv es LUN flexibility . Up to 36 physical L UNs can be presented to the operating system as a single, large LUN. This capability simplifies storage management because there are fewer L UNs to manage.
43 Centralized and Open Systems M anagement Software Simplifies IT O perations Storage Maximizer The Hitachi S torage Maximizer ™ is a solution that uses two software products – H itachi CruiseControl ™ and H itachi FlashAccess ™ software for mainframes and open systems.
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Pr ofessional Ser vices and S uppor t Hitachi Data Systems ® is consistently ranked Number One in the Industry In numerous independent sur veys on IT services organizations, Hitachi Data Systems ® continually wins the highest ratings in terms of overall customer satisfaction.
order to protect it. The Data Protection S er vices team uses software in all three categories of data movement: 1) Data Migration 2) Real-T ime Copy 3) P oint-in-T ime Copy The team will perform data.
Continuous Availability Service K eeping critical systems available at a level 4 or 5 on the Scale of 9s is no easy task. I t involves the best of har dware, software, and operations practice.
H itachi Data S ystems ® offers an entire suite of professional services that will assist clients in planning and implementing Storage Ar ea Network (SAN) solutions to optimize management and control data across the enterprise.
49 S ystem Configurations for the P er formance E xperiment Configurations of the HP and Sun Servers and Configurations of the Lightning 9960 ™ Switched Architectur e to a Shared-bus Architectur e l.
differences between the 7700E and the Lightning 9960 ™ system for the DSS workload; • The 7700E used all 6GB drives. • The Lightning 9960 ™ system used a mix of 18GB and 47GB drives.
51 G lossar y of T erms 10BaseT E thernet with a data transfer rate of 10Mbits/sec. 100BaseT Also known as F ast Ethernet with a data transfer rate of 100Mbits/sec. AG Array Gr oup. ACP Array Control P rocessor . The group of processors on a PCB that performs the physical access of the disk drives across four FC-AL loops.
communication is an exactly timed stream of bits when the start of a character is located by using a clocking mechanism such as bipolar encoding. See also S ynchronous, H itachi T r ueCopy ™ . Av ailability In computer science, availability refers to the degree to which a system or resour ce is capable of performing its normal function.
CARB Cache memory Arbitrator circuit. Hitachi designed logical circuit in the Cache S witch (CSW) used to arbitrate access to cache. C ache Cache (pronounced cash) can be either on-chip memory circuits in a microprocessor (e.g. L2 processor cache), a reserved section of main memory (e.
Consistency Gr oups A software copy technique of suspending multiple volumes at the same time. Control F rame The Disk Controller or control frame, is the center cabinet of the Lightning 9900 ™ S eries system, housing the channel switch, cache, pow er supplies, batteries, and host interface cards.
DD D isk Dir ector . D ata Duplication S oftware that duplicates data as in r emote copy or P oint-in-T ime (PiT) snapshots. D ata duplication is differentiated from data migration in that with data duplication at the end of the process there ar e two copies of data and with data migration there is only one.
EBCDIC A bbreviation of E xtended Binary-Coded Decimal Interchange Code. P ronounced eb-sih-dik, EBCDIC is an IBM ® code for representing characters as numbers. Although it is widely used on large IBM ® computers, most other computers, including PCs and Macintoshes ® , use ASCII codes.
F ailover H ost, host bus adaptor , cable, or controller failover is the r outing of all transactions to a second controller when the first controller fails.
log in with each other and the switch to exchange operating information on attributes and characteristics. This information includes port names and por t IDs and is used to establish interoperability parameters. FICON An ESA/390 ® computer peripheral interface.
r un concurrently . Reliability is enhanced with retry logic, alternate path routing, and r estart from point of failure. Ease of use is pro vided by a Java-client interface, a system monitor , scheduling support, and remote control of client functions from OS/390 ® .
storage ports, multiple cache nodes, and multiple disk Array Control P rocessors (ACP s). Each path runs at 100MB/s, permitting the Lightning 9900 ™ to scale up to a total bandwidth of 6.4 GB/s. This is six-to-eight times the internal bandwidth of shared bus based storage systems.
Hi tachi Rapid Recov er y The Hitachi Rapid R ecovery solution for S/390 ® -attached storage combines Hitachi N anoCopy ™ , Hitachi T rueCopy-S/390 Asynchronous ™ , and Hitachi S hadowImage ™ .
HSN H ierarchical S tar Networ k. The technical term used to describe the combined internal networks (the C–HSN and the CM–HSN) of the Lightning 9900 ™ S eries. Hub A common connection point for devices in a F ibre Channel network. A hub contains multiple ports.
Lightning 9900 ™ S eries The Lightning 9900 ™ S eries was announced in J une 2000 (Lightning 9960 ™ ) and Nov ember (Lightning 9910 ™ ). It r epresents a major advance in enterprise-class stor.
MBCP M aster Business Continuity P rofessional. The highest level of professional certification of the Disaster Reco ver y Institute (DRI). The master level targets an individual with a minimum of five years of experience as a business continuity/disaster reco ver y planner .
MTBF M ean Time B etween F ailure. A commonly used measure of system r eliability , usually expressed in hours. M odern disk drives typically have an MTTR of 1 million hours or more. MTTR M ean Time T o Repair . Includes the time taken to diagnose the failure, replace or repair faulty component(s) and restart the system so it is available to users.
O n-line system An interactive computer system supporting users over a networ k of computer terminals. O pen system A system whose characteristics comply with standards made available thr oughout the industry , and therefore can be connected to other systems that comply with the same standards.
RAID R edundant Array of Independent D isks. RAID is used to increase the reliability of disk arrays by pro viding redundancy either through complete duplication of the data (RAID-1, i.e., mirroring) or through construction of parity data for each data stripe in the array (RAID-3, -4, -5).
SCSI Sm all Computer System Interface. An intelligent bus-level interface that defines a standard I/O bus and a set of high-level I/O commands. There are currently many flavors of SCSI defined by different bus widths and clock speeds.
S ynchronous S ynchronous communications occurs when the transmission of data between two devices is synchronized with a clocking scheme or other technique.
W AN Wi de Area N etworks or W ANs are networks of computers that are geographically dispersed and connected by radio waves, telephone lines, satellites, or high-speed fibre optic backbones. Wa rm site An alternate-processing site that is only partially equipped (as compared to H ot site which is fully equipped).
Hi tachi Data Systems W orldwide Offices www .hds.com www .storage@hds.com Corporate Headquarters 750 Central Expressway S anta Clara, California 95050-2627 U.S.A. (408) 970-1000 info@hds.com A sia Headquarters 39-09 T ower One Lippo Centre 89 Queensway H ong K ong 2525-2385 infoasia@hds.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Hitachi 9960 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Hitachi 9960 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Hitachi 9960 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Hitachi 9960 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Hitachi 9960, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Hitachi 9960.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Hitachi 9960. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Hitachi 9960 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
