Saturday, 24. April 2010. 06:46 von 4-HTECHWIZARDS.ORG
As a professional, your clients know that they can trust you and that you are there for them. But what happens when the technology is not for you? Imagine that you are on the phone, e-mail program, telling him with great pride that at last he has been waiting for the document is ready. When you talk, you can attach a document via e-mail, send it off. . . and wait.
And wait. Email is no longer in your Outbox and not in his mailbox. You check e-mail address, and the debate will become increasingly difficult, you assure the client that the document really exists and there really was an e-mail sent. He is frustrated and you’re a complete loss. You decide you no longer have to wait and change my Hotmail to send the document, which may or may not act immediately, either. The result is wasted time, and if you have entered your e-mail systems, you no longer have a single record of the exchange.
Admin list many reasons why this incident happened, the reasons are beyond his control:
The real reasons may itself drive a lot deeper, which means that it lost e-mail message is not an isolated incident.
Lost Emails Mean missed opportunities
Consumers accustomed to quick responses through the website, are rapidly losing its tolerance for slow email replies. Proof of this can be seen through a recent study by the WAV Group, which claims the real estate industry, the first representative to respond to customer e-mail to the investigation of a 73% chance to secure business. The third answer was no real opportunities. [1] Likewise, a study published in December 2008, Vodafone estimates that the lost opportunities due to failures to respond quickly and e-mails cost businesses about $ 27,000 a year. [2]
What about the email that disappears completely? This summer, Apple Corp were “losing” 10% of MobileMe subscribers email July 16 to 18 July. [3] The wave of blog posts have popped up as a result of this problem with making claims to all subscribers of the lost employment opportunities, lost business. We tend to view low-cost e-mail service, but clearly, when it fails, the cost may be surprising. Apple just notice that the problem was due to “serious.” How to “happen to these wayward e-mail, delayed or lost?
The truth is there are dozens of possible causes email delivery delays and errors. Complex type of business email systems such as Microsoft ® Exchange and Lotus Notes, there are many ways to build and configure the system. Some of the highest respect, while others barely meet the minimum requirements. With very little effort, you can determine whether the system had been properly determine your needs.
High Availability
As the name implies, High Availability is a system or network is operational, or available, the high degree of certainty and frequency. Ceryx, Hosted Exchange provider has made high availability for one of their primary focus. With data centers in New York and Toronto, they have developed various techniques to reproduce the message information in real time and can fail transferred to another institution if a disaster, so that they could offer real 100% SLA. Although most tend to opt for high availability and high performance, all Ceryx’s Microsoft Exchange installations have been built to meet the highest availability of life without compromising performance.
One point of reference for testing the performance of the application provider must sign the application for webmail and exchange e-mail to calendar view. Select a folder with a lot of messages and try sorting dispatcher “and then select the different pages. If there is a noticeable delay of these activities after the application service provider’s performance may not be enough.
System availability is determined by several factors, each of which is examined below.
Architecture
Delays are often the result of very late RPC server. RPC, or Remote Procedure Call, is how the Outlook client or Outlook Web Access client (OWA) communicate Exchanger servers. RPC latency delay means to initiate the request and its completion. RPC latency, as seen from the customer is a combination of networking and server lag behind. Good performance, the Microsoft Help is 50ms average delay is the mailbox servers. [4] If the mailbox on the server RPC late on average, much higher than this, desktop users can experience a “pop-up” and warnings of problems contact the Outlook Exchange server. Behind the incoming and outgoing e-mail is not processed, because the system is trying to catch up with other requests. Excessive “pop-up” may be more than annoying, they can slow down your computer, it is unusable when Outlook tries to connect to the server.
Ceryx seeks to maintain the number of RPC 20ms or less. To do this, it has avoided many of the tendency for service providers, who built the systems cheaper virtualization and Network Attached Storage. Instead, Ceryx has invested in server clusters and high-end SAN (Storage Area Network) is for each of the data center. SAN disk access performance issue as well as redundancy through RAID configurations, and Fibre Channel connectivity mailbox servers.
Many service providers that seek to reduce costs, combined with the Client Access Server and Hub Transport Server (servers are used to facilitate mail delivery) is a single physical machine. This dual role may introduce latency times of peak use, and is strangling the ability to handle large outgoing queues. Ceryx has been designed by Hub Transport role is to ensure the message queues can be quickly determined even during periods of heavy load. Combining a number of dedicated physical Hub Transport servers built-in round-robin load balancing capabilities for Exchange 2007 messages are quickly distributed across the Internet. Legitimate e-mail, hardware load balancing is used to ensure optimal performance in critical Hub Transport role, which deals with each message through the system.
Tracking
Most of the hardware load balancing configurations that can achieve both high performance and high availability, while maintaining high performance and high availability – with a dynamic system as Hosted Exchange introduced, where the service and the load can vary dramatically – you have an advanced surveillance system and processes to scale the system in response to continuous variables.
Some service providers to install a general follow-up packages, which are usually monitored every metric available, whether the metrics provide meaningful information about the performance of the system or not. Ceryx with every part of the environment around key metrics SAN queue length through the standard metrics such as CPU utilization and memory usage will be monitored, trended and understand. This information is used to develop extremely accurate predictions of system design and scaling. Any provider who is not invested in such monitoring tools and resources to respond only to the use of pins and the load. Ceryx plans for them.
Breathing Room
Another major reason for mail delays and poor performance may again be due to basic economics. “Store” is a unique databases, messaging data retention. Microsoft Exchange 2007 Enterprise, up to 50 stores per server with Microsoft recommended that 200 GB limit for each transaction. Some providers try to maximize the number of clients may be supported by pressing the boundaries. Ceryx not vice versa. Ceryx maintain up to 50 gigabytes of store – one quarter of the maximum – in order to obtain the best raw database performance and protect data against corruption common larger stores. These tough restrictions in force, it is difficult to imagine how some providers – which provide up to 4 GB mailboxes – will be able to operate a sustainable business and maintain high levels of performance and availability.
IOPS
Trade can also drive a second poor performance: IOPS, measuring how many times can read and write to disk per second, can vary greatly per system. Microsoft Exchange, the IOPS capacity of the performance of direct and heavy user can use up to 1 IOPS, under certain circumstances. Each disk has a maximum IOPS can support it, so be careful in relation to the users per disc is essential to maintain decent performance.
Ceryx must carefully maintain a generous ratio of IOPS per user based on real-world figures will be monitored to a broad user base, taking into account the peak activity times, not just every day on average.
Routing issues
To be fair, email delays and errors may occur outside their own environment. Scenario in which the colleague was looking forward to sit and wait for email to arrive, it may be stuck somewhere “in the cloud” – somewhere between the two environments, e-mail address.
Is a pre-sales and support at the level of Ceryx has developed a series of diagnostic tools to help identify potential routing issues. As with any application “cloud hosted” bandwidth is an important consideration when trying to secure a positive end user experience. Microsoft Exchange, which consumes 3 KB client’s internet connection per active user, there is no difference. Ceryx has developed a tool that simulates multiple network whether the customer has enough bandwidth to support the user base. Through this exercise, they have discovered that – all the customer’s transition to on-premise environment hosted environment – to increase the bandwidth necessary to partially compensate for the use and dismantling of the SMTP transport, external transport links to spam and attacks.
Spam / Anti-Virus
Of course, the most notorious place of message gets “stuck” or delayed is a provider of anti-virus and spam filtering system. Ceryx operates seven different anti-virus products around, to ensure system health and hygiene email. This level could potentially cripple an ordinary, which was not built in high performance, but Ceryx not only their high-performance solution to hit the virus in mind, but also tightly around so that email delivery has never jeopardize the spam-filtering and antivirus programs.
Beware of any provider who will either pass up this opportunity to the performance hit or worse yet, remove the backend anti-virus programs all together. Removal of anti-virus may appear to be a good way to control costs, as high-end solutions Can be very expensive, but it allows the removal of viruses, and again it is, it is often difficult, and then find, let alone remove. Ceryx system scans incoming and outgoing messages, and messages, keeping on schedule. Regular scanning the mailbox databases is as important as gateway anti-virus appear to reduce breakage.
Mobility
The benefits and usability of Ceryx architecture can be measured not only the desktop level, but also for mobile users with the same highly optimized and redundant environment. Ceryx also maintains a fully replicate the BES (BlackBerry Enterprise Servers) and its surroundings as possible to maintain the movement of life as well. Forum oilfield services, out of Houston Texas, currently has 600 employees using Ceryx Hosted Exchange solution, with nearly 100 mobile phone users.
Beware “discoveries”
Unfortunately, the market is full of Hosted Exchange providers who are not as concerned about delivering a reliable and flexible solution, because they have seen some costs low and selling high mailboxes. Providers, which offer 3 or 4 GB of mailboxes is often overlooked held perception that the mailboxes of this size does not do well and are very sensitive to data corruption. That corruption is not confined only to that user, but it can affect all users, who store, possibly even the entire server.
These service providers may offer only the mailboxes of this size at an affordable price, if they carry some of the other costs – for dedicated servers, SAN, anti-virus solutions, or a fully redundant architecture. Of course, much more costly loss of productivity and opportunities arising is changed which is designed for the primary objective is to achieve the lowest possible price point to compete with free market solutions, and deliver Enterprise performance and usability.
Ask all potential sellers of the following:
How do you measure up?
Lost or delayed e-mail may be considered detrimental or warning. Purchase decision is fiscally responsible, but often seemingly negotiate solutions can be devastating and costly impact on the long term.
So how does the system measure? Using Ceryx as guide, to measure the speed, versatility and flexibility of the system.
CeryxSLA: 100% Latency: <20 msGB / Store: 50 GB / StoreIOPS Fri User: HighBandwidth Sizing Tools: YesSpam / Anti-Virus: Gateway + Server-Mailbox IntegratedMobile Device Access: Redundant BlackBerry, ActiveSync Ceryx customers share the belief that their data is most companies' trump card. As the most widely used collaboration tool for companies, individual Microsoft Exchange account generally includes a plan for the employee's tenure: the timetable, the correspondence (and commitments), contacts, contracts and much more. Ceryx Our customers trust that this is a real-time diary is a safe, accessible and always available. Footnotes: [1] Wav Group: Saada Edge Real Estate with Smartphones http://wavgroup. com [2] The Open Press: http://www. theopenpress. com / index. php? = Press & id = 42 004 [3] Apple Forum: http://support. apple. com/kb/TS1953 [4] The Microsoft Exchange Team Blog: http://msexchangeteam. com/archive/2005/09/28/411674. aspx [5] Microsoft TechNet: http://technet. Microsoft. com/en-us/library/bb738147. aspx