250-700 exam Dumps Source : Implementation of HA Solutions for Windows using VCS 4.1
Test Code : 250-700
Test designation : Implementation of HA Solutions for Windows using VCS 4.1
Vendor designation : Symantec
: 73 existent Questions
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faced with diminishing returns from ransomware and cryptojacking, cyber criminals are doubling down on choice strategies, equivalent to formjacking, to do money in line with a preview of Symantec’s internet security risk file (ISTR), volume 24.
Symantec’s ISTR provides a top flush view of the danger landscape, together with insights into global probability pastime, cyber crook traits, and motivations for attackers. The report analyzes facts from Symantec’s world Intelligence community, the largest civilian casual intelligence community on this planet, which statistics events from 123 million assault sensors worldwide, blocks 142 million threats day by day and monitors possibility activities in more than 157 international locations. Key highlights from this 12 months’s report include:Formjacking is the original procure moneyed quick Scheme for Cyber Criminals
Formjacking attacks are criterion – just about digital ATM skimming – where cyber criminals inject malicious code into retailers’ websites to purloin customers’ payment card details. On standard, more than 4,800 enjoyable websites are compromised with formjacking code each month globally. Symantec blocked greater than three.7 million formjacking assaults on endpoints in 2018, with very nearly a 3rd of faultless detections happening throughout the busiest on-line searching length of the yr – November and December.
whereas a number of generic sellers’ on-line pervade web sites, including Ticketmaster and British Airways, had been compromised with formjacking code in recent months, Symantec’s analysis reveals small and medium-measurement sellers are, by in tremendous, the most widely compromised.
via conservative estimates, cyber criminals might besides acquire accumulated tens of millions of bucks ultimate yr, stealing patrons’ monetary and personal suggestions via credit card fraud and sales on the shadowy web, with a separate credit card fetching up to $45 in the underground promoting boards. With greater than 380,000 credit score cards stolen, the British Airways assail lonely may additionally acquire allowed criminals to internet more than $17 million.
“Formjacking represents a significant risk for each businesses and patrons,” spoke of Greg Clark, CEO, Symantec. “buyers don't acquire any means to understand if they are traveling an contaminated online retailer without using a complete protection solution, leaving their useful own and economic counsel at risk of doubtlessly devastating identification theft. For companies, the skyrocketing raise in formjacking displays the transforming into risk of provide chain assaults, now not to mention the reputational and legal responsibility hazards organizations visage when compromised.”The Diminishing Returns of Cryptojacking and Ransomware
In fresh years, ransomware and cryptojacking, where cyber criminals harness stolen processing power and cloud CPU usage from buyers and firms to mine cryptocurrency, acquire been the go-to strategies for cyber criminals looking to do convenient money. however, 2018 brought drop-offs in activity and diminishing returns, basically because of declining cryptocurrency values and extending adoption of cloud and cellular computing, rendering assaults less constructive. For the primary time given that 2013, ransomware infections declined, dropping through 20 p.c. nevertheless, enterprises may still not let their shield down – commercial enterprise ransomware infections jumped via 12 % in 2018 as compared to closing yr, bucking the universal downward trend and demonstrating ransomware’s ongoing casual to companies. basically, greater than eight in ten ransomware infections influence agencies.
although cryptojacking undertaking peaked early final year, cryptojacking exercise declined by using fifty two p.c faultless through the route of 2018. Even with cryptocurrency values shedding by using 90 % and greatly cutting back profitability, cryptojacking however continues to hold appeal with attackers because of the low barrier of entry, minimal overhead, and anonymity it offers. India ranks fourth globally, 2nd in APJ when it comes to crypto mining activities. similarly, India ranks 2d both globally and in APJ when it comes to ransomware actions. Symantec blocked three.5 million cryptojacking routine on endpoints in December 2018 on my own.When it involves protection, the Cloud Is the brand original notebook
The very security mistakes that were made on PCs faultless through their preparatory adoption by means of the business at the moment are occurring in the cloud. A separate misconfigured cloud workload or storage instance could can pervade a corporation tens of millions of greenbacks or land it in a compliance nightmare. during the past year alone, more than 70 million records had been stolen or leaked from poorly configured S3 buckets. There are besides numerous, easily-obtainable rig that permit attackers to identify misconfigured cloud resources on the cyber web.
The contemporary discoveries of hardware chip vulnerabilities, together with Meltdown, Spectre, and Foreshadow additionally station cloud functions at risk of being exploited to gain access to the included reminiscence spaces of other companies’ components hosted on the very actual server.dwelling Off the Land rig and provide Chain Weaknesses Spur Stealthier, more formidable attacks
supply chain and dwelling off the land (LotL) assaults are actually a mainstay of the up to date possibility panorama, widely adopted by each cyber criminals and focused assault groups. in reality, supply chain attacks ballooned by seventy eight percent in 2018.
LotL thoughts allow attackers to maintain a low profile and cover their recreation in a mass of respectable processes. as an example, using malicious PowerShell scripts increased by using 1,000 % closing yr. while Symantec blocks 115,000 malicious PowerShell scripts each month, this definitely accounts for less than one % of universal PowerShell usage. A sledgehammer approach towards blockading faultless PowerShell undertaking can breathe disruptive to groups, extra illustrating why LotL concepts acquire whirl into the favored tactic for a lot of centered assault groups.
picking out and blocking off these assaults requires using advanced detection methods like analytics and machine getting to know, corresponding to Symantec’s Managed Endpoint Detection and Response (MEDR) provider, its greater EDR 4.0 know-how, in addition to its superior AI answer, focused assail Analytics (TAA). TAA has allowed Symantec to learn dozens of stealthy focused attacks, including these from the Gallmaker community who conducted their cyber espionage campaigns fully with out malware.
in addition to LotL and weaknesses in the utility provide chain, attackers are additionally increasing their utilize of chummy assail strategies, like spear-phishing, to infiltrate companies. whereas intelligence gathering is still the basic reason of centered assaults, the variety of assault companies the utilize of malware designed to smash and disrupt company operations multiplied by 25 percent in 2018.information superhighway of issues in the Crosshairs of Cyber Criminals and assail corporations
while the quantity of information superhighway of issues (IoT) attacks continues to breathe extravagant and consistent with 2017 ranges, the profile of IoT attacks is altering dramatically. however routers and connected cameras do up the biggest percentage of contaminated contraptions (90 percent), very nearly each IoT gadget has been proven vulnerable, with every thing from smart mild bulbs to voice assistants growing additional entry features for attackers.
centered assault organizations are increasingly specializing in IoT as a key entry factor. The emergence of the VPNFilter router malware represents an evolution in common IoT threats. Conceived by a talented and well-resourced possibility actor, it permits its creators to smash or wipe a device, purloin credentials and statistics, and intercept SCADA communications.
“With an increasing trend in opposition t the convergence of IT and industrial IoT, the next cyber battlefield is operational technology,” talked about Ajathashatru Varma, Director, Symantec Cyber protection services, India. “A becoming variety of agencies, similar to Thrip and Triton, display pastime in compromising operational systems and industrial handle programs to probably establish together for cyber conflict.”The brilliant privacy Awakening
With the contemporary Cambridge Analytica facts scandal and the facebook records privateness hearings, the implementation of the regular information privateness regulation (GDPR), and revelations about app region tracking and privacy bugs in extensively-used apps similar to Apple’s FaceTime function, consumer privateness has entered the spotlight the past year.
smart telephones could arguably breathe the superior spying gadget ever created – a digital camera, a listening gadget and placement tracker multi functional that's willingly carried and used anyplace its proprietor goes. while already focused by using nation-states for common spying, prudent telephones acquire besides develop into a lucrative skill during which to assemble patrons’ own information, with cellular app builders existing because the worst offenders. India is among the top countries for cellular malware with 23.6 percent of global infections.
in response to Symantec analysis, 45 percent of probably the most customary Android apps and 25 p.c of probably the most universal iOS apps request area monitoring, forty six percent of commonplace Android apps and 24 % of commonplace iOS apps request license to entry your equipment’s digicam, and e mail addresses are shared with 44 percent of the accurate Android apps and 48 p.c of probably the most universal iOS apps.
Digital rig that collect cell facts for tracking infants, pals, or misplaced telephones are additionally on the upward propel and clearing the style for ill-treat to track others with out consent. more than 200 apps and features present stalkers a lot of capabilities, including primary area tracking, textual content harvesting, and even covert video recording.
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"access to clear drinking water is the most threatened right of Caribbean individuals," says Zachary Harding, CEO of Hyperion equity, the inner most fairness enterprise that manages the Caribbean local weather Fund. The Caribbean climate Fund changed into centered by means of Harding's Hyperion fairness after completing his constrict as CEO of the Caribbean climate prudent Accelerator, which is now hasten by using their these days appointed CEO, Racquel Moses from Trinidad.
Harding, in his former publish with the Accelerator, facilitated the implementation of a water harvesting expertise that has simply taken a Jamaican slight ones’s hospital off the water grid. here is a great success within the local context, where one in 4 americans (always among the poorest 20%) will not acquire domestic access to piped water, and droughts and infrastructural issues outcomes in periodic “lock-offs” for the the ease of the population.
for many small island setting up states of the Caribbean, the station climate exchange-connected pressures, equivalent to drought and ascetic climate, compound geographic, industrial and infrastructural issues—water shortage is a course of life.
to position the condition in context, Barbados, given its need of spotless water supplies, has a water availability of simply 306 cubic meters per capita per year, which makes it the fifteenth most water‐scarce nation on the planet. Jamaica has suffered from an growing venerable and overburdened water gadget with tens of hundreds of reported leaks per year, and in Dominica, water carrier was no longer restored to many areas except mid-2018— greater than half a 12 months after hurricane Maria devastated the island. These are individual examples however the issues pervade the vicinity.
In 2017, the Caribbean Drought and Precipitation Monitoring network (CDPN) and personnel at the St. Lucia-based mostly Caribbean Environmental fitness Institute (now replaced by means of the Caribbean Public fitness company or CARPHA) warned that within the years to come, the eastern Caribbean might contemplate declines in commonplace annual rainfall between 30-50%. similtaneously, the region is experiencing the rapid depletion of spotless water aquifers, a climb in saline and strong water and the pollution of groundwater elements. These land and water-based issues Do not even open to abide in intellect serious socio-financial and political deterrents to spotless water availability.
It is not astonishing that, of the 37 international locations that the world supplies Institute has recognized as having “extraordinarily high” stages of water stress, seven are from the Caribbean: Dominica, Jamaica, St. Vincent and the Grenadines, Trinidad and Tobago, Antigua and Barbuda, Barbados and St. Kitts and Nevis, with the latter three being specific as water scarce (under 1,000 meters cubed of freshwater substances per capita).
“The paradigm of publicly offered water, originating generally from customary sources and processed through energy-intensive applied sciences will develop into much less and less possible,” says Harding. “every ail should breathe made to purloin the water provide chain off the grid and ‘out the box.’”
during the ultimate half a decade, countrywide governments acquire invested in infrastructure upgrades and implementations, together with mains substitute, water medication flowers and leakage reduction initiatives, each with restricted levels of success, typically because of fiscal and logistical difficulties, inferior design and pile and discrepant and short sighted planning that has neglected the burden of long hasten maintenance.
at present, the conception of converting wastewater into drinking water is nothing more than a pipe dream—pun meant. in keeping with the Caribbean Regional Fund for Wastewater administration, up to eighty five% of wastewater across the Caribbean is untreated. lower than 17% of Caribbean buildings are even related to a public sewage equipment. The fiscal implications of one of these venture are leviathan.
Desalination, the routine of extracting spotless water from seawater, makes utilize of what would materialize to breathe a bountiful useful resource in the Caribbean.
during the ultimate decade, 68 original desalination vegetation acquire been built throughout the area, with a skill of 782,000 cubic meters of purified water per day (Caribbean Desalination association). Nevis’ Premier ticket Brantley lately introduced that the govt of the United Arab Emirates would launch a $50 million greenback solar-powered desalination venture in St. Kitts and Nevis, throughout the primary half of 2019.
Desalination isn’t with out its challenges, however. A contemporary UN-backed examine discovered that environmental hazards related to desalination flowers are higher than initially idea; the most obvious of which relate to great amounts of energy consumption and harm to marine ecosystems as well as during the construction of poisonous by means of-products, comparable to brine, that are pumped again into the ocean.
Atmospheric water era (AWG), a procedure that extracts, filters, sterilizes and stores water without detain from vapor that exists within the air, offers a greater environmentally sustainable option to desalination and has generated a pleasant deal of buzz in scientific and water circles certainly with respect to programs that are fueled by using solar energy.
As improvements continue to handle the hardship of water scarcity, old-fashioned and obsolete water management systems will breathe replaced and choice sources discovered. The monetary and logistical burden of implementation and upkeep will should breathe shared between countrywide governments and the deepest sector, with an empowered network of conclusion-users who're plugged in by means of clear and decentralized monitoring methods so that they too can whirl into fraction of the answer.
local weather exchange-related challenges corresponding to floods, sea flush upward push, drought and extreme weather are the brand original norm for the Caribbean. Given the complexity of compounding political, economic and environmental considerations, regional collaboration is required to find a sustainable reply to a “global water crisis” a pleasant course to acquire an impact on over 1.8 billion individuals via 2025.
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Configuring application servers may not breathe as trivial as it seems. There are some configuration commands and parameters that may not labor as the users intuit. To do matters worse, configuring clusters not only involves tuning parameters, but besides requires you to deal with the availability of servers, SSH configurations, operating application server in faultless nodes, etc. Thus below we’ll warrant how to easily create a GlassFish cluster with Docker and Jelastic using solutions such as CloudScript.
For this specimen guide, we’ve chosen Oracle GlassFish application server, as it offers reference implementation of Java EE 7 and has a centralized course to operate clusters, applications, and configurations without the necessity to manage every cluster node. According to the official GlassFish documentation, administration node has the following architecture:
In the picture above, the Domain Administration Server (DAS) is the administration node of a cluster, which can communicate between cluster nodes by DCOM (in case of GlassFish clusters in Windows nodes) or by SSH (in case of Linux-, Solaris- and macOS-based cluster nodes). Also, there exists the third option, named CONFIG, intended to manage each node locally. In order to centralize the administration, GlassFish Docker image is using SSH for communication between DAS and other GlassFish worker nodes. Now, let’s characterize how the Docker images were prepared.Docker Images
For this demo, we’ll utilize two Docker images:
The very GlassFish Docker image can result in containers performing both DAS and cluster node roles. What makes it feasible are several customizations made in the Docker image, originally created by Bruno Borges from his GlassFish 4.1.1 image. So, they customized the images to trot away from Oracle Linux to Debian, add the OpenSSH install step, and define several configurations in the image provisioning and start up processes.
The containers need to communicate between them through SSH, so installing an SSH server is mandatory (we’ve used OpenSSH in this case). Additionally, the entries PubkeyAuthentication, StrictModes, AuthorizedKeysFile, PermitRootLogin, and IdentityFile in /etc/ssh/sshd_config had to breathe properly set. Moreover, the SSH keys are scanned during startup process to avoid SSH getting stuck due to the key’s fingerprint acceptance, by ssh-keyscan doing it for us. Once the SSH was properly configured, they are able to automate cluster configuration.
Cluster configuration in GlassFish 4.1.1 is not a trivial assignment to automate, requiring some flush of expertise. This Docker image can labor as a DAS by setting -e ‘DAS=true’ in the Docker hasten command. If a container is hasten with this parameter set, it will start the domain, create a cluster named cluster1, quit the domain, and start it again with -v parameter. If a GlassFish container has a DAS container linked, it assumes itself as a cluster node, creates a cluster node by using asadmin create-local-instance command, stops the domain, updates the node definitions by using the command asadmin update-node-ssh from the DAS node in order for the DAS node to transfigure the callee into a SSH cluster node, and finally starts the instance by using nadmin start-instance command. For a better understanding, please read the run.sh source code in the GlassFish Docker image repository.
Jelastic offers a HAProxy Docker image ready to breathe used in Jelastic environments. Containers from jelastic/haproxy-managed-lb Docker image can add or remove nodes from the load balancer configuration by running the shell script /root/lb_manager.sh inside the container, with one of the following parameters:
For this demo, they used Jelastic as a Docker infrastructure and they created a CloudScript of this demo, in this repository. They besides used the clusterjsp.ear application to test whether the cluster and the load balancer were working as expected.
In this CloudScript, they can notice that there are two events to update the load balancer’s configuration — onAfterScaleOut and onAfterScaleIn — and one event to update the cluster — onBeforeScaleIn. In the case of an onAfterScaleOut event, a procedure is called to add the nodes to the load balancer, using the script inside HAProxy container. The event onAfterScaleIn just calls the /root/lb_manager.sh directly inside a for loop, and passing faultless the nodes from event.response.nodes. In the case of an onBeforeScaleIn event, a procedure is called to remove GlassFish nodes from the cluster.
Now, as you acquire a better understanding of the proposed JSON file, let’s import it in Jelastic to create an environment. You can access the GlassFish DAS administration console by getting the HTTP URL for it — you can obtain it by clicking on ‘Open in browser’ button at the right of the das node designation — and accessing it using HTTPS and in the port 4848. To test whether the load balancer works, deploy the clusterjsp application in cluster1 and set the Availability option. Accessing the load balancer container URL, you may contemplate a GlassFish web page indicating that it is running. Set the context of the deployed application and you’ll access the application. After one or two page reloads, you’ll contemplate that the node accessed varies.Create Clustered Environment
You can import the environment by following the steps below:
1. Access Jelastic console and click Import.
2. Select the URL tab and set this URL from the cluster JSON.
3. Set the designation for the environment and click Install.
4. Finally, as they can see, the cluster was created.Deploy and Configure Application
After creating the cluster, they can deploy an application to the cluster and aver that the cluster is working correctly and the load balancer is operating as it should.
1. At the GlassFish das node row, click the button Open in browser located at the right of node’s name.
2. Once the browser window is open, it shows the default GlassFish web page. Change the URL browser to https://<environment_domain>:4848.
3. Enter the GlassFish console with the user admin and password glassfish.
4. evaporate to the Application option and deploy the clusterjsp.ear application:
5. Now open the HAproxy node in browser and add /clusterjsp at the suspension of the URL.
Every time you refresh the page, the executed server IP address changes, indicating that the load balancer is working.Conclusion and Future Works
Docker images and scripting Do a remarkable job at automating environment creation together. Docker containers from images, which hasten in Jelastic the very course they hasten in any other infrastructure, and scripting, to capture the reform topology of the servers involved in the environment, are the bread and butter of any Docker environment that can breathe used in Jelastic infrastructure. They profit from its advantages in terms of resource management and are able to migrate from other platforms to Jelastic and migrate away if needed.
Hardware, although often an afterthought in an SAP project, is an essential component of an SAP system. Hardware comprises the servers (think “data center computers”), disk storage systems, network gear (such as routers, network switches, and security firewalls), and tape backup units faultless working together to create the infrastructure or groundwork layer of an SAP system. If any one piece is overlooked or skimped on, it creates a debilitated link or separate point of failure that may cause something down the road as simple as a one-time nagging glitch or as major as a series of significant system outages, costing your company precious dollars. When hardware purchases are addressed late in an implementation, inevitable budget cuts (yes, implementing SAP tends to breathe more expensive than most companies assay up front) often restrict purchasing what could acquire been a robust and highly available system. foster planning will serve you avoid this problem when designing the overall solution.
The major players in the SAP hardware marketplace sell systems that felicitous faultless types of solution needs, from small/medium user platforms reflecting commodity solutions and low cost, to larger and highly resilient platforms capable of scaling on the flit to meet the changing or growing needs of thousands of users. Choosing a confederate simply based on designation recognition is a pleasant station to start, to breathe sure. However, purloin trust to investigate and compare hardware solutions from competitors that are truly apples-to-apples solutions. A million-dollar commodity hardware solution might support the very workload as a high-end proprietary system costing twice as much, but Do they present the very levels of availability, scalability, and flexibility your business needs to survive month-end closing? By the very token, will saving a few dollars on hardware (or database software, for that matter) require the IT department to disburse more money every year on systems management, maintenance activities, and downtime for upgrades and patches?Server Hardware
We view server hardware as coming in three main initial acquisition “cost” classes or performance categories: small or low, medium, and elevated (see motif 4.1). Costs per server can achieve from a few thousand dollars to several million. Performance can vary as well, depending on the number of CPUs, amount of RAM, internal server architecture factors, support for high-speed disk operations, and much more. Different hardware platforms are developed to support various operating systems and levels of system availability. They vary in terms of configuration flexibility and on-the-fly adaptability too.
Figure 4.1 Servers for SAP arrive in a variety of sizes and configurations.
Interestingly, a separate SAP solution may utilize servers from one, two, or faultless three categories. For instance, SAP solutions are commonly designed to leverage a high-end server for the database tier, a mid-tier server platform for the SAP central instance or applications servers, and perhaps very inexpensive servers to address web server needs, noncritical bolt-on solutions, and so on. Conversely, other SAP IT departments might pick to establish faultless their SAP components on only a few high-end servers that can breathe carved up into partitions or virtual machines as necessary. And some small/medium businesses (SMBs) may pick to hasten SAP solely on low-cost servers (relying on SAP’s built-in application server horizontal scalability to maintain them out of mischance should their workload grow). In any case, overall system availability, a comprehensive total cost of ownership analysis (reflecting technology, people, and process costs over time as well as up front), and anticipated future business requirements should drive your hardware platform decision.
Several of the largest and certainly best-known hardware vendors utilize proprietary CPU chips in their servers and support a proprietary OS as well. IBM’s PowerPC chip running AIX is a pleasant example, as are HP’s end-of-life PA-RISC and more contemporary Itanium2-based IA64 platforms running HP-UX. breathe sure to investigate your platform’s skill to host other operating systems as well; this can breathe beneficial down the road when you need to retire your SAP system and quest to redeploy it internally rather than toss it in the dumpster. HP’s IA64 chips support Windows, Linux, and OpenVMS, for example, whereas Sun’s latest offerings support Solaris, Windows, and Linux.
Clearly the trend of late is around deploying low-cost servers based on commodity CPU chips from Intel and AMD (often referred to generically as “x64” platforms). HP and Dell are the biggest players in this market, though Sun offers a bit of choice here as well. Interestingly, these platforms are growing more and more powerful each year, supplanting some of the bigger server platforms in the process. Commodity server configuration factors continue to expand and provide IT departments with choice—from dense blades to slim-line “pizza box” designs to more traditional big-box designs. Meanwhile, hardware vendors in this space continue to develop high-availability, virtualization, and other technologies and solutions that serve establish these servers on more of an equal footing with their proprietary counterparts. In faultless the excitement and hype surrounding these well-performing upstarts, though, purloin trust not to overlook trade offs. Low cost up front doesn’t always translate to low cost over a system’s lifetime, for example.
When purchasing servers and associated hardware for SAP, admiration investing in the high-availability features offered for the platform, even if an additional pervade is involved. Most servers present redundant power supplies, redundant memory, disk array (RAID) controllers capable of running even after a disk drive fails, and support for multiple network interfaces cards (NICs) to avoid failure of a network segment, network switch, or separate card. Leveraging these technologies will certainly multiply the overall uptime of your SAP solution, typically adding only incremental cost in the process.
Server networks should breathe configured in a redundant vogue as well. In many IT data centers, the network represents a major—and avoidable—single point of failure. Dual switches and the utilize of the aforementioned redundant NICs can eliminate or mitigate what otherwise could breathe a major outage. Of course, these NICs and switches must breathe properly and professionally installed, cabled, and configured to actually labor well; attention to elevated availability is just as Important after the purchase as beforehand.Disk Subsystem Hardware
Most server hardware vendors besides sell disk subsystems, which are essentially enclosures for multiple disk drives used by SAP and other applications to house the application’s database, its installation binaries or executables, and so on.
The most robust and well-performing disk subsystems today are in the configuration of storage area networks (SANs) and to a lesser extent network-attached storage (NAS) systems. Similar to how servers are marketed, vendors sell low-tier, mid-tier, and high-end SANs and NAS devices. At a minimum, the storage chosen for SAP should support redundant connectivity between the storage and the servers connected to it, so as to avoid a separate point of failure. RAID (Redundant Array of Inexpensive Disks) flush 0, 1, 5, or 10 should breathe configured as well to protect against disk failures. As Table 4.1 suggests, different RAID levels provide various combinations of availability, cost, and performance.Table 4.1. Disk Subsystem RAID Types, Advantages, and Disadvantages
Method of Availability
Advantages and Disadvantages
Spans multiple disks, faultless of which are available for storage. RAID 0 is remarkable when maximum space is needed, and it provides excellent performance as well. However, no disk redundancy is afforded, and it’s not viable for production systems.
Mirroring provides best-in-class performance and excellent redundancy, although it’s costly (a 500GB database requires a terabyte of raw disk capacity at minimum).
Disk striping with parity
Stripes data with parity, making for wonderful disk read performance, though to some extent a disk write penalty; excellent redundancy balanced by best-in-class low cost.
Disk mirroring and striping
Data is both striped and mirrored; best performance and redundancy, although this is the most costly routine of providing disk subsystem availability.
High-end SAN storage typically supports advanced replication technologies, too, which can breathe useful for cataclysm recovery purposes among other things. breathe sure to search for into such capabilities—the skill to copy data between remotely connected SANs or to create “snapshots” of SAP databases on the flit is useful in many different ways, from enabling rapid system backups, to allowing systems to breathe cloned for offline testing and training, to supporting cataclysm and business continuity requirements in the wake of a ascetic data center outage.
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