Redundancy is essential for dealing with both planned and unplanned outages, and that includes having redundant dynamic host-configuration protocol (DHCP) servers to allow uninterrupted dynamic assignment of IP addresses.For those working in Windows environments, there are currently two options for setting up redundant DHCP servers: a failover scenario with a main server paired with another in hot standby; and a load-balancing scenario in which two DHCP servers actively handle client requests.
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Redundancy is essential for dealing with both planned and unplanned outages, and that includes having redundant dynamic host-configuration protocol (DHCP) servers to allow uninterrupted dynamic assignment of IP addresses.For those working in Windows environments, there are currently two options for setting up redundant DHCP servers: a failover scenario with a main server paired with another in hot standby; and a load-balancing scenario in which two DHCP servers actively handle client requests.
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There are only a few special characters involved in working with character strings on the command line or in a script on Linux: the single quote, the double quote and the backslash. But the rules aren’t as obvious as one might think. In this post, we’ll look at the easy and the somewhat tricky uses of these special characters.Echoing text
The echo command doesn’t require any variety of quote characters much of the time. You can echo a phrase like this without bothering with quotes of any kind.To read this article in full, please click here
There are only a few special characters involved in working with character strings on the command line or in a script on Linux: the single quote, the double quote and the backslash. But the rules aren’t as obvious as one might think. In this post, we’ll look at the easy and the somewhat tricky uses of these special characters.Echoing text
The echo command doesn’t require any variety of quote characters much of the time. You can echo a phrase like this without bothering with quotes of any kind.To read this article in full, please click here
Watch is a command on Linux that will repeatedly run commands for you, and it offers some very useful options. One of its basic options is that you can tell watch how long to wait before running the specified command again. For example, if you run the command watch -n 10 date, the watch command will first clear the screen and run the date command right away. After that, it will run the command every 10 seconds until you stop it by hitting control-C. Note that the first line on the screen will indicate the wait time between iterations (every 10 seconds).$ watch -n 10 date
Every 10.0s: date fedora: Fri, Aug 12 16:32:09 EDT 2022
Fri Aug 12 04:10:11 PM EDT 2022
The -n option specifies the number of seconds between commands. The default is 2. You might have to look closely to notice the changes in the output.To read this article in full, please click here
Watch is a command on Linux that will repeatedly run commands for you, and it offers some very useful options. One of its basic options is that you can tell watch how long to wait before running the specified command again. For example, if you run the command watch -n 10 date, the watch command will first clear the screen and run the date command right away. After that, it will run the command every 10 seconds until you stop it by hitting control-C. Note that the first line on the screen will indicate the wait time between iterations (every 10 seconds).$ watch -n 10 date
Every 10.0s: date fedora: Fri, Aug 12 16:32:09 EDT 2022
Fri Aug 12 04:10:11 PM EDT 2022
The -n option specifies the number of seconds between commands. The default is 2. You might have to look closely to notice the changes in the output.To read this article in full, please click here
OK, you’re a CIO and when you go down to the data center, you see racks of routers, each with a maze of cabling. When you hear “virtual routers” you think of all of that gone, replaced by mystical router instances floating about somewhere in the ether, and you smile.Or you’re a CFO who gets a bill for hundreds of branch routers, each picking your pocket on service charges and maybe software licenses. You hear “virtual routers” and think of all those little hands going out of your pocket, and you smile.To read this article in full, please click here
OK, you’re a CIO and when you go down to the data center, you see racks of routers, each with a maze of cabling. When you hear “virtual routers” you think of all of that gone, replaced by mystical router instances floating about somewhere in the ether, and you smile.Or you’re a CFO who gets a bill for hundreds of branch routers, each picking your pocket on service charges and maybe software licenses. You hear “virtual routers” and think of all those little hands going out of your pocket, and you smile.To read this article in full, please click here
A big lesson brought home early in the COVID-19 pandemic is that IT requirements can suddenly change at an explosive rate, and the only way to prepare for such events is to build as much flexibility as possible into corporate networks.Many large enterprises had already embraced this concept, but smaller ones with fewer financial resources had not. The pandemic moved the needle for many of them from viewing flexibility as a luxury to seeing it as a core functionality they can’t afford to be without.SD-WAN buyers guide: Key questions to ask vendors
So what goes into achieving the level of flexibility that lets business adjust on the fly to 100% of their employees working remotely or situations where critical staff can’t come into the office?To read this article in full, please click here
A big lesson brought home early in the COVID-19 pandemic is that IT requirements can suddenly change at an explosive rate, and the only way to prepare for such events is to build as much flexibility as possible into corporate networks.Many large enterprises had already embraced this concept, but smaller ones with fewer financial resources had not. The pandemic moved the needle for many of them from viewing flexibility as a luxury to seeing it as a core functionality they can’t afford to be without.SD-WAN buyers guide: Key questions to ask vendors
So what goes into achieving the level of flexibility that lets business adjust on the fly to 100% of their employees working remotely or situations where critical staff can’t come into the office?To read this article in full, please click here
Later this month, HP Enterprise will ship what looks to be the first server aimed specifically at AI inferencing for machine learning.Machine learning is a two-part process, training and inferencing. Training is usign powerful GPUs from Nvidia and AMD or other high-performance chips to “teach” the AI system what to look for, such as image recognition.
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Inference answers if the subject is a match for trained models. A GPU is overkill for that task, and a much lower power processor can be used.To read this article in full, please click here
One of the more unusual Linux commands is named “yes”. It’s a very simple tool intended to help you avoid having to answer a lot of questions that might be asked when you run a script or a program that needs a series of responses to do its work.If you type “yes” by itself at the command prompt, your screen is going to start filling up with the just the letter “y” (one per line) until you hit control-C to stop it. It’s also incredibly fast. Unlike what you see displayed below, yes will likely spit out more than a million y’s in the time it likely takes you to reach down and press control-C. Fortunately, that’s not all that this command can do.To read this article in full, please click here
There’s never a dull moment in the enterprise SSD market. Among the latest developments are three new products from Samsung, Micron and Kioxia. Here are the highlights.Samsung’s new computational storage drive
Samsung unveiled a second generation of its SmartSSD, an SSD with a Xilinx FPGA and some memory for doing computational storage. Computational storage is the process of processing data where it lies rather than moving it around the network. It’s a new concept and only possible with SSDs; there’s no way this could be done with a mechanical hard drive.To read this article in full, please click here
How much computing power should we put at the edge of the network?In the past when networks weren’t supposed to be very smart, it wasn’t even a question. The answer was none. But now that it’s possible to bring often substantial amounts of computational equipment right to the very edge of the network, the right answer isn’t always so easy.The arguments in favor are simple. When packets travel shorter distances, response time is faster. With compute, storage and networking deployed at the edge, network lags and latencies don’t slow down each trip between users and resources, and users and applications get better response times.At the same time, because more work is done at the edge, the need will drop for bandwidth between remote sites back and central data centers or the cloud: Less bandwidth, lower cost.To read this article in full, please click here
Optane, the memory technology pioneered and championed by Intel, has seen its last days. Intel has decided to wind down the technology as part of a refocusing effort.The news came on an earnings call with analysts to discuss Intel’s rocky second quarter. Since Pat Gelsinger has taken the reigns at Intel, the company has divested itself of McAfee (although that process began before Gelsinger arrived) as well as shed its drone business, NAND products, RealSense visual sensors, and Intel Sports.
Read more: Intel’s $20 billion bet on advanced fabricationTo read this article in full, please click here
In this Linux tip, we’re going to work with the eval command. It’s a bash built-in that can run a variable as a command. This means that you can set up a complex command by saving it as a variable and then run it using eval. Doing this can be very convenient when you’re creating a complex command.
The market for edge data center services and equipment will grow at a compound annual rate of 17% over the next five years, propelling the total size of the market above $18 billion by 2026, according to a report from Ireland-based analytics firm ResearchAndMarkets.com.Edge data centers, which the report defined as “small data centers located close to the edge of a network”—that is, closer to the end-user than the public cloud—are currently a $9.3 billion global market, the researchers said, which they predict will nearly double in size in the next half-decade.To read this article in full, please click here