By badbrad Date 20091120 Missed one thing. Create a zero byte file in CWindows called MSJAVA. DLL to get around the Java install. Introduction About 6 months back I wrote a weblog on how to integrate Windows. Net Controls with the ABAP Control Framework. Given the age of this technology I was a. Issues Addressed Introduced 56925 The SAS Deployment Manager reports a failure for the Run PostUpdate Tasks stage of configuration 64bit Enabled AIX, 64bit. METAINFMANIFEST. MFdocmanual. Release Notes Missing Features Release 7. December 12, 2012. SAN vs DAS A Cost Analysis of Storage in the Enterprise. Home  Articles  SAN vs DAS A Cost Analysis of Storage in the Enterprise. SAN vs DAS A Cost Analysis of Storage in the Enterprise. Repositories/10065/file/SAP_GUI_for_Windows_Signature_Color.png' alt='Install Sap Automation Activex Controls Download' title='Install Sap Automation Activex Controls Download' />Over the years enterprise storage configuration has come through many waves of innovation and today offers many options. This article will compare storage costs associated with deploying a Storage Area Network SAN and Direct Attached Storage DAS in the enterprise, as well as demonstrate that sometimes DAS is not a cost effective option. We discuss the cost of DAS cost of SAN deploymenent. The question of cost is often raised when considering whether to deploy direct attached storage or storage area network. First impressions usually highlight DAS as the cheaper alternative, but as the storage requirements grow into many terabytes, this consensus may not always be the case. Although we have partnered with Dell for our hardware, costs across the industry are relatively similar so you can assume that the following data will still apply to your enterprise, plus or minus 1. Cost of DAS Direct Attached StorageWe usually purchase DAS in two configurations, Power. Vault MD1. 00. 0 with a total capacity of 4. TB using 3. 00. GB SAS drives, or the Power. Vault MD1. 00. 0 with a total capacity of 7. TB using 5. 00. GB SATA drives. For comparison reasons Im also including the market rate in USD as well as a chassis configurations with 1. GB 1. TB drives. The SAP Support Portal page covering SAP Passport, which allows you to access a multitude of SAP websites without having to enter your Suser ID and password, while. Symantec security products include an extensive database of attack signatures. An attack signature is a unique arrangement of information that can be used to identify. Game Nokia Symbian 7610. OrgPublisher provides both a fully webbased Thin Client and a PluginX Rich Client viewing options. For optimal usage of the solution functionality, we recommend that. PDF files that contain the Visual Studio 2005 documentation. As you can see from the table below, the 1. GB drive configuration is the most cost effective Cost of DAS when it comes to GB. Of course this wouldnt be the optimum configuration if you wanted a high throughput Database or Messaging disk system. Interestingly it is actually more expensive to use 1. Invader Zim Cartoon'>Invader Zim Cartoon. GB than 3. 00. GB SAS 1. Keep this in mind when specifying your next high end storage system to keep your Cost of DAS to a minimum. As I write this article, we are pushing the 1. Install Sap Automation Activex Controls And PluginsTB mark for SATA drives and 4. GB for SAS drives. MD1. MD1. MD1. 00. MD1. 00. Number of Drives. Size GB3. 00. 14. Interface. SASSASSATASASRotational Speed. Base Unit USD1,9. Install Sap Automation Activex Controls InstallTotal Storage GB4. Total Cost USD1. GB USD2. GB0. 3. 60. 3. 11. Table 1 GB Cost of DAS per GB in DAS deployments. Install Sap Automation Activex Controls' title='Install Sap Automation Activex Controls' />Cost of SAN Storage Area NetworkSANs are a bit of a different kettle of fish and we use different drives depending on the requirements of the application. To keep things simple and to keep a lid on the Cost of SAN environments, we have standardized on the Dell AX4 5. F.   The AX4 is actually a rebadged EMC AX4 but we wont hold it against Dell. For this comparison we have chosen, the 3. GB and 1. 00. 0GB drives so that we can compare them with the DAS results earlier. So lets look at the numbers AX4 5. FAX4 5. FNumber of Drives. Size GB3. 00. 10. Interface. SASSATARotational Speed. Base Unit Inc 4 Disks USD1. Total Storage GB4. Total Cost USD2. GB USD5. GB0. 1. 80. 6. 7Table 2 GB Cost of SAN per GB in SAN deployments. We can see that the capacity of the 1. TB disks make the SATA configuration much better value for money, and we pay only 1. GB of storage.   True, at first the Cost of SAN doesnt look impressive in comparison to the DAS, but check out the next section which will explain what happens as we add storage. Another point to mention is that although slower, SATA may still be a good choice for applications requiring high throughput because a SAN can have many GB worth of cache boosting performance far more than a similarly configured DAS. But dont underestimate the performance of DAS. If properly configured, DAS still offers better response and throughput for disk intensive applications. The reasons behind this are based on the fact that in order to keep utilization rates high on a SAN, your LUNs may not rest on dedicated disks. Meaning your SQL LUNs could be sharing disks with your File Server LUNs. By guaranteeing exclusive service to one application, DAS can outperform SAN deployments. What Happens As Storage Grows. As your storage requirements grow, so do the costs associated with expanding the DAS and SAN infrastructure. But unlike DAS, where costs are linear no matter how much you expand the storage, SAN costs actually shrink as you add storage. Take a look at the following chart, which demonstrate this better. As you can see, the DAS storage costs are set at 0. GB no matter how much storage you procure obviously there may be some savings if you negotiate with your vendor, giving the linear relationship. Each time you want to expand past the 1. Figure 1 Cost of SAN Cost of DAS vs Storage Size. In contrast, the SAN chart displays an exponential relationship which in our example will settle towards 0. GB.   The reason why SANs exhibit this type of behavior is because we dont need to purchase new base components each time we have a requirement to expand storage. With the initial deployment of the SAN infrastructure you would have purchased the base components, such as storage enclosure, FC switches, storage processors, cache memory etc. The only new components which need to be added are the physical drives and storage shelf if needed. Efficiency of DAS vs SAN The True Cost of Storage DAS vs SANOne of the best selling points of SANs is its ability to efficiently utilize the disk storage. Because we are all quite apprehensive about running out of disk space, we tend to over spec our requirements and purchase far more disks than are required. This doesnt do much for efficient use of the storage, particularly when we are paying a premium for high spec disks. Even if we are generous and make the assumption that most DAS storage arrays are running at 5. The. Info. Pro. net Fortune 1. DAS utilization is between 3. This means the true cost to the business for DAS is double that initial 0. GB we mentioned earlier because we purchased more than necessary. Figure 2 Efficiency of SAN vs DAS in terms of storage utilization. When storage is centralized, a SAN can run at 8. For example, on a 3. TB SAN, running at 8. TB of spare capacity, far more than DAS could provide cost effectively. The table below shows the comparison between the final cost of DAS vs SAN when taking into consideration utilization rates. Cost per GB USDUtilization Rate True Business Cost USDDAS0. SAN1. 0. 88. 01. Table 3 Efficiency of SAN vs DAS in terms of storage utilization. The results in this table are based on a 4. TB configuration using 1. GB SATA drives. Figure 3 True Cost to the Business Cost of SAN vs Cost of DASAdditional Benefits of a SANThe following are some benefits available on SANs but not on DAS SAN provides data mirroring across multiple sites. This will be a key feature in business continuity and disaster recovery plans. SAN provides snapshot technology for data replication and protection SAN provides tools to manage extremely large volumes of storage. Imagine trying to manage 6. TB of storage in a DAS configuration. SAN is scalable. DAS arrays have limited capacity and are difficult to grow. SANs have a larger capacity 6. TB for the Dell AX4 5. F and can dynamically allocate storage as requirements change.