{"id":242,"date":"2013-07-17T12:47:13","date_gmt":"2013-07-17T10:47:13","guid":{"rendered":"http:\/\/e3mag.com\/?p=242"},"modified":"2019-04-01T10:57:12","modified_gmt":"2019-04-01T08:57:12","slug":"problem-solver-layer-model","status":"publish","type":"post","link":"https:\/\/e3mag.com\/en\/problem-solver-layer-model\/","title":{"rendered":"Problem solver layer model"},"content":{"rendered":"

If you look at the latest quarterly sales figures for the Unix<\/span>-server market, you may already be struck by a hello effect.<\/p>\n

Indeed, the decline is continuing, to put it nicely. In contrast, the x86<\/span>-Server Sales.<\/p>

\"\"<\/a><\/div>\n

This picture fits the factual. Particularly against the background that more and more ITUser<\/span> from Unix<\/span> turn away and switch in the direction of Linux. Of course, this also applies to the SAP<\/span>-Community.<\/p>\n

One aspect drives the User<\/span> however, in the process: As is well known, in the case of a Unix<\/span>-Linux<\/span>-Migration<\/span> and a one-to-one transfer of the Unix<\/span>-SAP<\/span>-architecture, the database licensing costs explode due to the high number of Intel cores.<\/p>\n

Especially if the database layer is transferred unseparated. High availability aspects also play a not insignificant role here as a side effect in the respective layers.<\/p>\n

Clever solution<\/h3>\n

So, what can be done to help this Costs<\/span> to cheat?<\/p>\n

One approach to optimization is to use the current SAP<\/span>-architecture design and to derive a separation of the application layers from it.<\/p>\n

This means that you thus have the possibility to create for the Database<\/span> to license only computing power that has been Database<\/span> is really consumed and not core.<\/p>\n

Briefly to explain what is meant by a Layer model<\/span> is understood: Here one divides the SAP<\/span>-landscape into three layers: the application server layer, the central server layer, and the application server layer.SAP<\/span>-services layer and the Database<\/span>-Shift.<\/p>\n

The goal is to reduce the number of cores needed for the database layer - to minimize database layer licensing costs. This type of design optimization is interesting for customers who want to Database<\/span>-direct contracts with core-based Database<\/span>-licensing have been received.<\/p>\n

And:<\/strong> The introduction of a shift model is generally worthwhile from five production lines and 15 Instances<\/span>\/SIDs.<\/p>\n

It is also important to note that when introducing a SAP<\/span>-layer model are certain Parameter<\/span> to be examined. Especially because among the above five productive lines and less than 15 SAP<\/span>-Instances<\/span> such a re-design does not pay off.<\/p>\n

The main reason:<\/strong> There will be more OS-Partitions<\/span> per SAP<\/span>-ID instance is required. Which means that a higher number of physical Servers<\/span> becomes necessary.<\/p>\n

If the check is positive and a re-design takes place, the physics is then optimized, so to speak, by means of SAP<\/span>-Virtualization<\/span>.<\/p>\n

The bottom line is that the optimization measure requires less physics, in other words: fewer servers are needed.<\/p>\n

SAP<\/span>-Central Services Layer<\/h3>\n

In the case of a re-design based on a layer model, single points of failure (against the background of HA<\/span>-aspects) can be eliminated through enqueue replication and message server clustering.<\/p>\n

It makes sense here to refer to the certified variant of the SAP<\/span>-Cluster-Reference architecture<\/span> to fall back on. The SAP NetWeaver<\/span> High availability<\/span> Cluster 7.30 Certification (Reference architecture<\/span>) describes the interaction of the SAP Control Framework with the sap-startsrv.<\/p>\n

The key point here is that by means of sapcontrol via the sapstartsrv as well as via SAP<\/span>_SUSE Cluster Connector the Communication<\/span> to the cluster Framework<\/span> is defined.<\/p>\n

The cluster component is called by Suse HA<\/span> Extension. Whereby the HA<\/span> Extension the Communication<\/span> to the SAP Instance Resource Agent, which in turn is connected to sapcontrol.<\/p>\n

Furthermore, via SAP Instance Resource Agent, SAP LVM<\/span> with the SAP Control Framework<\/span> coupled.<\/p>\n

As far as the application layer is concerned Scalability<\/span> and High availability<\/span> generated by multiple dialog instances.<\/p>\n

Falls a SAP<\/span>-application server, it can simply be generated again and then booted up.<\/p>\n

Hana<\/span> Not a cost driver<\/h3>\n

As a side note, Suite on Hana will make it possible to add more and more SAP<\/span>-Modules on Hana<\/span> to operate.<\/p>\n

Due to the compression factor of 1:5 and the Hana<\/span>-operation in conjunction with the Suse<\/span>-Intel<\/span>-Infrastructure<\/span> is the licensing of the Hana<\/span>-Database<\/span> not core-based and therefore does not represent a cost driver.<\/p>\n

In order to establish further criteria for the feasibility of the SAP<\/span>-landscape on the basis of a layer model and to evaluate the High availability<\/span> according to the NetWeaver High availability<\/span> Cluster 7.30 Certification, as well as the associated integration into the SAP LVM<\/span> is recommended to get acquainted with the study on the topic of Realtech<\/span> to deal with.<\/p>","protected":false},"excerpt":{"rendered":"

In the case of a Unix-Linux migration and a one-to-one transfer of the Unix-SAP architecture, the database licensing costs can explode due to the high number of Intel cores. This can be countered by using a layer model.<\/p>","protected":false},"author":10,"featured_media":2830,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","footnotes":""},"categories":[24,7,1464],"tags":[130,65,127],"coauthors":[25625],"class_list":["post-242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","category-meinung","category-mag1308","tag-datenbank","tag-hana","tag-unix","pmpro-has-access"],"acf":[],"featured_image_urls_v2":{"full":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"thumbnail":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-150x150.jpg",150,150,true],"medium":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",400,172,false],"medium_large":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-768x331.jpg",768,331,true],"large":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"image-100":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-100x43.jpg",100,43,true],"image-480":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-480x207.jpg",480,207,true],"image-640":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-640x276.jpg",640,276,true],"image-720":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-720x310.jpg",720,310,true],"image-960":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-960x414.jpg",960,414,true],"image-1168":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"image-1440":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"image-1920":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"1536x1536":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"2048x2048":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"trp-custom-language-flag":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",18,8,false],"bricks_large_16x9":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"bricks_large":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"bricks_large_square":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",1000,431,false],"bricks_medium":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",600,259,false],"bricks_medium_square":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux.jpg",600,259,false],"profile_24":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-24x24.jpg",24,24,true],"profile_48":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-48x48.jpg",48,48,true],"profile_96":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-96x96.jpg",96,96,true],"profile_150":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-150x150.jpg",150,150,true],"profile_300":["https:\/\/e3mag.com\/wp-content\/uploads\/2016\/11\/Linux-300x300.jpg",300,300,true]},"post_excerpt_stackable_v2":"

Bei einer Unix-Linux-Migration und einer Eins-zu-eins-\u00dcbertragung der Unix-SAP-Architektur k\u00f6nnen die Datenbanklizenzkosten durch die hohe Anzahl der Intel Cores explodieren. Dem kann durch die Verwendung eines Schichtenmodells begegnet werden.<\/p>\n","category_list_v2":"Linux Kolumne<\/a>, Die Meinung der SAP-Community<\/a>, MAG 13-08<\/a>","author_info_v2":{"name":"Friedrich Krey, Suse","url":"https:\/\/e3mag.com\/en\/author\/friedrich-krey-suse\/"},"comments_num_v2":"0 comments","_links":{"self":[{"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/posts\/242","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/comments?post=242"}],"version-history":[{"count":0,"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/posts\/242\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/media\/2830"}],"wp:attachment":[{"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/media?parent=242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/categories?post=242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/tags?post=242"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/e3mag.com\/en\/wp-json\/wp\/v2\/coauthors?post=242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}