Part 3 addresses the third axis: SAN vs. DAS arrays typically had very little on- board smarts, other than the ability to run RAID configurations and present the RAID volumes to the connected server as if they were a single volume instead. NAS was file- level storage presented over a network connection to servers. The two common protocols used were NFS (for Unix machines) and SMB/CIFS (for Windows machines). NAS solutions often include more functionality, including features such as direct interfaces with backup solutions, snapshots of the data volumes, replication of data to other units, and dynamic addition of storage. SAN was high- end, expensive block- level storage presented over a separate network infrastructure such as FC or i.
SCSI over Ethernet. SAN systems offer even more features aimed at enterprise markets, including sophisticated disk partitioning and access mechanisms designed to achieve incredibly high levels of concurrence and performance. As time passed and most vendors figured out that providing support for both file- level and block- level protocols made their systems more attractive by allowing them to be reconfigured and repurposed by their customers, the distinction between NAS and SAN began to blur. DAS, however, was definitely dumb storage. Heck, if you wanted to share it with multiple systems, you had to have multiple physical connections! For Exchange 2. 00. Exchange 2. 00. 7 deployments, storage vendors were happy because if you had more than a few hundred users, you almost certainly needed a NAS/SAN solution to consolidate the number of spindles required to meet your IOPS targets.
The heck you say! In the middle of the Exchange 2. Microsoft upset the applecart. Nokia 7710 Downloads. It turns out that with the ongoing trend of larger mailboxes, Exchange 2. SP1, CCR, and SCR, many customers were able to do something pretty cool: decrease the mailbox/database density to the point where (with Exchange 2. In general, disks for SAN/NAS units have to be of a higher quality and speed than for DAS arrays, so they typically had better performance and lower capacity than consumer- grade drives. This trend only got more noticeable and deliberate in Exchange 2.
Microsoft unified CCR and SCR into the DAG and moved replication to the application layer (as we discussed in Part 1). Microsoft specifically designed Exchange 2. RAID- less 2. TB SATA 7. RPM drive to hold a database and log files, so they could scale hosted Exchange deployments up in an affordable fashion. Suddenly, Exchange no longer needed SAN/NAS units for most deployments . From my own experience, their models only work IF and ONLY IF you continue to deploy Exchange 2. Exchange 2. 00. 3 and Exchange 2.
IOPS in the same mailbox databasegrouping mailboxes based on criteria meant to maximize single instance storage (SIS)planning Exchange deployments around existing SAN features and backup strategiesrelying on third- party functionality for HA and DRdeploying Exchange 2. DAGs as if they were a shared copy cluster. When it comes right down to it, both SAN and DAS deployments are technically (and financially) feasible solutions for Exchange deployments, as long as you know exactly what your requirements are and let your requirements drive your choice of technology. Inevitably, by designing around technological elements, you either have to compromise requirements or spend unnecessary energy, time, and money solving unexpected complications. So if both technologies are viable solutions, what factors should you consider to help decide between DAS and SAN? Storage Complexity. You. So why do so many Exchange ?
Microsoft Windows SDK, and its predecessors Platform SDK, and.NET Framework SDK, are software development kits (SDKs) from Microsoft that contain documentation.
They add more system components and drivers, extra bits of configuration, and additional systems with their own operating system, firmware, and maintenance requirements. If I go with i. SCSI I get additional GB or 1. GB Ethernet interfaces in my Exchange servers and the joy of managing yet another isolated set of network adapters and making sure Exchange doesn. Did I want redundancy on the Net. App controller? Upgrades get to be fun and I have to coordinate all of that to make sure they don. I get to have lovely arguments with the Net.
- Over the years these tools have morphed considerably. Windows Support Tools were included in the Windows 20 media via the \Support directory, while the.
- The Windows SDK provides all the headers, libraries, Windows Metadata files, and tools to build the new Windows Store apps introduced with Windows 8.
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App storage guys about why they can. SANs can also be a single point of failure, because they are wicked expensive and SAN administrators and managers get put out with Exchange administrators who insist on daft restrictions like .
Windows SDK for Windows 8 . The Windows Dev Center provides access to hundreds of demonstrative samples which are filterable by technology. Samples are available for Windows Store apps and Desktop apps. The following tools have been removed: Apatch. Bind. exe, Checkv. Consume. exe. Device.
Simulator. For. Windows. Side. Show. msi, Err.
FDBrowser. exe, FXCop. Setup. exe, Guidgen. Make- Shell. exe, MDbg. Mpatch. exe, MSIZap. PTConform. exe. Re.
Base. exe, sddlgen. Set. Reg. exe, Soap.
Suds. exe, Sporder. Tcp. Analyzer. exe, TSPDesigner.
UTL2. IDL. exe, Validate. SD. exe, Virtual. Light. Sensor. exe. Win. Diff. exe, Wpf.