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To some people, solid state drives (SSDs) represent a new long-anticipated era in storage technology that is taking us leaps and bounds forward. To others, SSDs represent a shaky technology that doesn’t live up to its expectations and can fail at any moment. Both of these statements aren’t necessarily false, since this storage technology is relatively new but at the same time has some flaws that make people think twice about purchasing these drives for themselves. A new report from the Joint Electron Device Engineering Council (JEDEC) adds another concern about SSDs: They possibly will not be able to retain their storage over long periods of time without power. Is this true? And what can you do about it?

Why Is There a Concern?

The boot process in your computer, in its simplest form, grabs your operating system from your storage and writes it into RAM memory. The reason your computer has to go through the boot process all over again once you cut off the power is because RAM cannot retain data without power. That said, SSDs operate with chips that are similar to RAM (hence the term “solid state”; there is no moving parts). The concern of a loss of data is realistic if you think of it in this context. However…

SSDs don’t use RAM chips. They use NAND flash chips which have different gateway wiring that retains its state even after the power is cut off. Flash memory has a special feature called a “floating gate” which is electrically isolated. Because of this isolation, there are (theoretically) no conventional external influences that can immediately change its state. That’s what makes it a viable long-term storage device.

The report from JEDEC, however, tells us that the temperature in which the device is stored when it is inactive (no power flows through it) can lower the lifespan of the data inside of it. The report suggests that the two-year ideal storage lifespan of an SSD is only available at a maximum long-term storage temperature of 25 degrees Celsius (77 degrees Fahrenheit). Bump the temperature up by five degrees Celsius, and you have effectively halved the lifespan to one year.

Should You Be Worried?

In general, I’d think you’d be using your SSD on a semi-regular or daily basis, right? If you want to store it for a long time, you should already be storing it in a comfortable temperature range for less than two years (who sets that kind of hardware aside that long?). This is already starting to look like it isn’t much of a concern.

In addition to this, the language of the study suggests that the predictions are at least quasi-theoretical. The methodology isn’t described very clearly, and there is no indication of how many drives were tested. The report’s conclusion is that “different temperatures introduce different NAND failure mechanisms.” In laymen’s terms, this means that they acknowledge that temperature does influence how long you can keep your data when the SSD is unpowered. Just how long that is, as with any other flash memory, depends on the drive itself.

Yes, maybe there is a concern. This article isn’t meant to bash the report. Its conclusion is speculative but still important. Ideally, you should be treating your SSD well and keeping it in a low-temperature area. Otherwise, just use it. If you want to store something that can stay in a long-term unpowered state, use a mechanical hard drive. These are very common sense suggestions. For the amount of time SSDs have been around, as of 2024, their limitations are still not completely discovered, and the JEDEC report is a good step in the right direction.

Miguel Leiva-Gomez

Miguel has been a business growth and technology expert for more than a decade and has written software for even longer. From his little castle in Romania, he presents cold and analytical perspectives to things that affect the tech world.

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Severe Storms Are Increasingly Leaving Us Without Power. Microgrids Can Help.

Not long after Hurricane Laura made landfall in southeastern Louisiana on Thursday morning, there were already hundreds of thousands of people without power, with no indication of when it will return.

Blackouts are not a problem unique to this storm. They’re a consequence that can be expected whenever a major hurricane, wildfire, or heat wave grips a region powered by a fragile, aging grid. Just earlier this summer, Hurricane Isaias left more than 2 million people along the east coast without power. A derecho with hurricane-grade winds in the midwest left over 250,000 without power two weeks ago. California experienced historic rolling blackouts amidst a heat wave around the same time.

This starkest example of all might be Hurricane Maria. After the storm pummeled Puerto Rico in 2023, the vast majority of the island went dark and it wasn’t until 11 months later that the island fully recovered electricity. It’s the worst power outage in US history and a longterm public health crisis, leaving people scrambling to access essential medicine and putting sanitation systems offline. The disaster laid bare the vulnerabilities of a centralized, fossil fuel-dependent power system to major climatic shocks.

Yet Hurricane Maria wasn’t just a lesson in what went wrong. It also showed what a disaster-resilient energy model could look like, particularly in the mountainous town of Adjuntas in Puerto Rico. When the community fell dark after the storm, there remained all but one source of power: a solar microgrid operated by Casa Pueblo, an environmental nonprofit and community center. The microgrid—a small power system with its own power source, capable of being disconnected from the main grid—made it easier for the community to recover in the long months to come.

“We became an energy oasis for the community,” says Arturo Massol-Deyá, the executive director of Casa Pueblo. The space, which also boasts a radio station and coffee shop, offered shelter, community, and power. People could charge essential electronics, receive food and medical supplies, use a satellite phone to call loved ones, and come together in the aftermath of a disaster. Casa Pueblo also distributed 14,000 solar lanterns to people nearby who remained without power.

It became clear that this could offer a way forward in future disasters, too. “Since [Hurricane Maria], we have been more aggressively promoting a transition to clean energy sources not as an opportunity, but more as a necessity for the island,” says Massol-Deyá. To date, they’ve installed over 150 solar projects, including at the fire station, grocery store, a nursing home, a hardware store, a pizza parlour, and in the homes of people with energy-dependent medical needs, like dialysis.

Already, these operations have been tested. Massol-Deyá says the solar operations have smoothly weathered a year-long series of earthquakes, as well as other disruptions this past month. “We have had two storms passing by Puerto Rico in the last 10 days and twice blackouts, yet our systems and all the projects that we have done—over 150—they’re resilient,” says Massol-Deyá. Plus, if something were to happen to one installation, he says it’s easy to repair and the entire system isn’t compromised.

Meanwhile, the country’s grid has continued to falter, even after being rebuilt following Hurricane Maria. “This time, Puerto Rico’s precarious power system faced an entirely different problem: The lines and poles rebuilt after the storm held up, but some of the aging power plants did not, revealing yet another urgent need for the bankrupt power authority,” reported The New York Times in January.

Beyond a more steady source of power, Massol-Deyá sees microgrids as part of a broader vision of creating an energy system that local people are able to control. “We want to democratize energy in Puerto Rico and we want people to be producers instead of consumers,” says Massol-Deyá. “The wealth associated with energy generation can be distributed among the population as a way to deal with poverty.”

That said, Jeffers says that “if you’ve seen one microgrid, you’ve seen one microgrid.” There can be a lot of variation in the design and purpose. In remote parts of Alaska, for instance, microgrids are used in places where transmission lines simply can’t reach.

Along with Puerto Rico, other hurricane-vulnerable regions have turned to microgrids as part of a way to build resilience for the next—and likely worse—hurricane. “In our region we are susceptible to these high wind events for six months a year because our hurricane season starts at the beginning of June and ends in November,” says Fidel Neverson, who lives in St. Lucia & the Grenadines and is a project manager at the Rocky Mountain Institute’s Islands Energy Program.

The program has been installing microgrids, solar panels, and batteries on islands across the Caribbean, including nine microgrids in the Bahamas, to prepare for a future of worsening hurricane seasons. Neverson says it’s also a way for the islands to become “energy independent” by not relying on costly imported fossil fuel. “When you’re on a little island, you’re relying on fuel coming in from somewhere to provide your generators with the fuel that it needs.”

It also can save customers who end up paying for these imported fuels. “In the Bahamas, you may see electricity rates more like 30 cents per kilowatt-hour,” says Neverson. That’s double the average cost in the United States of 13.19 cents per kilowatt-hour. So, he says, “it makes a lot of sense from a cost savings standpoint to turn these small Island grids into microgrids.”

Currently, the Islands Energy Program is nearly done with the construction of a renewable microgrid on Ragged Island in the southern Bahamas. In the northern Bahamas, they are also building renewable microgrids to backup critical facilities on the Abaco Islands, which were hit hard by Hurricane Dorian in 2023. “What happened is essentially the power system there was devastated. All the power lines were taken down,” Neverson says. “In that case, you see the value of microgrids because you had these two power stations that were responsible for powering an entire island.”

“Part of the impetus for the project was to figure out a way to provide community shelter with backup power in case of a grid outage,” says Todd Olinsky-Paul. It’s now able to power 2,000 homes in addition to a local high school that acts as a shelter during emergencies.

A key part of this project is the battery storage, explains Olinsky-Paul. It’s able to reduce the energy load on ordinary days and the amount ratepayers pay for transmission, while also increasing reliability.

The most recent Senate Democrats’ climate report notes the need for more distributed energy systems like microgrids. “There is an important role for small-scale distributed generation, which can help provide resilience during natural disasters and meet equity and environmental justice goals,” the report notes. Unfortunately, it doesn’t go into more details on the policies that would help increase the deployment and access to microgrids.

A microgrid itself doesn’t address environmental justice; like any technology, it depends on how it is used and integrated into a community. In fact, it could also further energy inequalities by essentially privatizing parts of the grid, explains Johanna Bozuwa, the co-manager of the climate and energy program at the Democracy Collaborative. “I think there is a real potential in which we see microgrids implemented in higher income communities,” says Bozuwa, “But then that doesn’t allow for low-income community members or folks in disenfranchised neighborhoods to actually get access to those services.”

Currently, low-income communities face barriers to accessing distributed renewable power. Bozuwa points to the fact that tax credits, one of the main incentive mechanisms for renewable energy, are not available to nonprofit organizations that don’t pay federal taxes, as well as cooperatives and low-income people who don’t pay enough taxes to make the cut. “That is a problem because often those are the entities that actually have the most incentive to try to create resiliency because they often are community based,” says Bozuwa.

Along with helping the state survive extreme flooding and wind events, Mason sees this community-owned, decentralized energy system as key to shifting the state away from corporate farming toward more local systems and jobs. “[It] will mean that we can start to bring some jobs back to these rural communities and development that will lead to more localized and small processors in some of these rural towns,” says Mason.

As for Casa Pueblo, their next project is building Puerto Rico’s first community-owned and -managed solar microgrid with battery power, which will power 17 businesses on the island. By allowing community members to have control over the energy system, Massol-Deyá envisions this as a key way to give the island more determining power over its future. He says, “If Puerto Rico can fulfill its own energy needs, then we can think about decolonizing the island from this political situation we have with the US.”

Using Color Schemes For Power Bi Data Visualization

Creating a high-quality color palette for your Power BI data visualization is essential to make your reports look compelling and professional. You may watch the full video of this tutorial at the bottom of this blog.

I’m constantly seeing some reports that use a generic color palette from Power BI, which affects the visualization and representation of their insights.

I personally can’t stand these colors as they just don’t do your work any favor when engaging your consumers into your insights.

So, if you want to create great reports, you need to spend a bit more time finding a good and coherent theme that you can implement in your models.

Let’s try to use this report as an example. I’ll be showing you some of the colors that I am using in a particular report, and how I use them in combination with one another.

I used the same theme throughout my entire report. I tried to match good colors that will work together.

This report was utilized during the Enterprise DNA learning summit last May, 2023. We went through six different workshop sessions over three days, and a lot of analytical insights were discussed around how you can create really compelling Power BI reports. A big part of that was related to visualization.

Now, some of you might think that it’s quite hard to find good color combinations. During this tutorial, I’ll discuss how you can create really great and compelling color themes in your reports. I’ll run through my process and show how I create color palettes from scratch.

First of all, I’ll be showing you this Enterprise DNA Power BI Showcase page. This is where you can get some inspiration for colors.

You can also use the live demos for each report and dashboard. If you want to download all of these, you just have to upgrade to a Enterprise DNA membership. This is certainly something to consider if you really want to master Power BI visualizations and analytical techniques.

In creating color palettes, I mostly use two key websites. The first one is called Color Palette FX.

This website automatically generates palettes of color based on an image that you already have. For instance, if you have a company website, logo, or any other company-related image, we can just place it into this image box.

Then, it would automatically come up with a palette of colors based exactly on the image that you have uploaded. 

Let’s check out this image here.

The image above is the one that I used for the sample report that I previously showed. It doesn’t look exactly the same because I only chose the particular colors I wanted to use. But you can still see that there were some colors from the image which I utilized in this report.

If you want to download this resource, all you have to do is to register for the learning summit. During the summit, you will not just learn about creating compelling good reports and models in Power BI, but you’ll also be able to download this resource, and see how I’ve developed the visualization. 

Then find the file that we want to upload.

Another thing that you’ll get if you come to the learning summit is a text file. This file contains settings on how your themes need to be set up. This format is what you’ll be using so you can completely implement the color palette in your Power BI reports.

Then, you should paste it into this format from the text file.

After that, you need to turn it into a json file. You can do this by saving it with a .json file extension. Then, you may import the file after saving it. And that’s the core of what I do for color themes. I always like to start with a random image of my choice, and then use a website to generate colors from the image.

If I’m not yet satisfied with the generated palette from the previous website, I also go to this really great website called Coolors. This is also free to use. It can generate a palette of similar colors that work together.

For example, if we want to use this particular color, we just need to copy the Hex color code value.

Then, let’s paste it into this part of the Coolors website.

 And then let’s try to use this light greenish color.

Paste it again here, and make sure to lock both colors.

Finally, just press the space bar. As you’ve probably noticed, these three colors are now creating the other parts of our palette and generating different colors that we can utilize in our report.

You can now get it into your model to have this coherent color scheme that we can utilize and implement in our reports.

That’s how you implement great colors within Power BI. Primarily, I gain inspiration from an image. Then I upload that image in a web-based tool to generate the color palette for me. From generating all of these unique codes for my color palette, I then create my palette template and integrate this into Power BI.

Another important design tip: utilize good color combinations and do not overdo it.

I highly recommend working through the video to understand both my work and thought processes on how to generate great color palettes in Power BI for your own work.

For many more design and report creation tips, check out the Dashboarding & Data Visualization Intensive course module at Enterprise DNA Online.

Also, don’t forget to check out the Enterprise DNA Showcase page for more inspiration on how to set up reports in Power BI.

Enjoy working through this detailed video.

Sam

Can You Use 2 Power Supplies In One Computer?

In the past couple of years, it has become very evident that CPUs and GPUs have become increasingly power-hungry. We doubt this will change in the near future, so those who prefer super-powerful computers, be prepared to spend big on 1000W+ power supply units (PSU). Now, what if you have two power supply units sitting around in your home, is it possible to use both of them to power your hungry CPU GPU instead of having to go out and purchase a new one? That’s the question we want to answer.

We must point out that we are not talking about computers that come with two power supplies where one is redundant. Note that redundant power supplies are primarily used in servers where users want to avoid interruptions in a situation where one power supply goes bad.

Is it possible to use 2 Power Supply units in a single system?

If you want to know if you can use two PSUs in a single computer system then read the information we have provided below:

Advantages of using two power supplies

One of the reasons why some folks may consider using two power supplies has a lot to do with if they own a computer system that is so powerful that a single PSU is not enough to deliver the right amount of power. This tends to happen with computers that were purposefully built for cryptocurrency mining among other things.

So, it would be one PSU works to power the GPU, while the other powers the CPU, and that would hopefully even out the load and improve the overall performance of the system.

The second reason for people wanting to use two PSUs has much to do with budgetary problems. You see, a computer user can choose to add a second power supply to the one they already have instead of purchasing a new and expensive model.

In some cases, folks may have a second power supply tucked away somewhere. This is why we must always consider never throwing away good components because they might come in handy down the road.

The major problem with working with two power supplies is the fact that desktop computers were never designed to hold that many. Additionally, motherboards for the most part were built to work with just a single PSU at a time, which means, folks will have to find workarounds.

In order to solve the problem of your computer not being able to work with two PSUs, you must purchase a new tower entirely, or if you have the skills, build one of your own.

For those who prefer to buy, we suggest looking into the Phanteks (PH-ES620PTG-DBK01) Enthoo Pro 2 Full Tower which is available on Amazon.

These types of towers tend to come packed with all the necessary connections for your setup to work, so worry not.

Should you use two power supplies on your computer?

In all honesty, unless you are mining cryptocurrency, are an extreme gamer, or have requirements for an extreme workstation, then you should probably avoid using two power supplies. In fact, you have no need for such a setup in the first place.

READ: Power Supply Calculator to calculate the Power Supply Wattage

How do you set up a dual power supply?

A power supply unit works by raising or lowering the voltage as needed. To set up a dual power supply, some devices out there require the use of stepped-down voltage from standard AC outlets. These outlets are capable of outputting 100 to 240 volts, or to a lower amount. Additionally, some power supply units have the ability to increase voltage and isolate incoming and outgoing circuits with ease.

What are the core components of the power supply unit?

The core components of a typical power supply unit are as follows:

The Transformer

The Rectifier

The Filter

The Regulator Circuits

Certainly, there are other components, but the above are the main ones.

Where is the power supply unit in a PC?

A power supply unit is located at the back of the computer, and in many cases, at the top. However, things are changing because modern designs have the power supply unit located at the bottom and at the back of the tower. When it comes down to all-in-one desktop computers, the power supply is usually found at the left back or right back of the case.

Using The Power Bi Data Analytics Planner In The Analyst Hub

There are a plethora of tools that you can use in the Analyst Hub that will assist you during Power BI deployment. If you’re leading the analytics team or part of the Center of Excellence (CoE) team in your organization, the Power BI Analytics Planner tool will be of great assistance.

The Analytics Planner in the Analyst Hub is a tool that enables you to plan your analytics workload. You can use this tool to create master documentation of all the relevant data in your organization.

This tutorial will use a Master Data Pipelines Planning document as an example. In this case, it will contain the organization’s data pipelines documentation.

Within each card, you can add more details and even format the background color to apply a color-coding scheme. You can also place information on how to access the software or database by adding links to websites and other sources.

To allow other users to access the file, place this in the Team folder. Do this by scrolling to the bottom of the page and enabling the Team option.

When you go to the Documents tab, you’ll then see that the Master Data Pipelines Planning document has been added to the Team folder.

You can also place a document within a project. Go to the Project tab and select New Project.

Then, write the project name and description.

Another way to communicate in the Analyst Hub is through the HUB.

The HUB has a feature called the Hub Chat. This functions in a similar way to a community chat. There are also quasi-hubs for each team.

It’s a collaborative workspace where users can share and discuss data, analytics, and insights. This feature also allows users to see other team members who are working on a particular document. If you have an urgent inquiry, you can send a message to anyone in the team who can offer you help.

When assigning databases in your organization, there’s a possibility of an overlap between different divisions. For example, the Finance and Marketing departments both need access to the business transaction data.

To prevent any errors or lapses in the system, you need to properly plan out the data flows and set up your workspaces efficiently.

Problems like these are often discovered during the later stages of Power BI deployment. This can cause a lot of issues if not addressed early on.

That’s why it’s important to list and plan all the workspaces and data sources you’ll need in your organization. The Analytics Planner is the perfect tool to help you with that.

The Data Analytics Planner in the Enterprise DNA Analyst Hub is a powerful tool that allows users to effectively plan and execute Power BI projects. Its user-friendly interface and wide range of features make it easy to navigate and customize to fit the specific needs of any organization.

It allows multiple users to work on the same project or analysis and make updates in real-time, while also providing a centralized location to store and access data. It’s a great tool to use during the planning stages of Power BI deployment.

All the best,

Sam McKay

The Evolution Of Solid State Drives (Ssds)

When solid state storage were invented over half a century ago and then made widely commercially available, their effect was transformative — the technology has played a major role in the evolution of storage, gaming, business and computing. But by examining SSDs, you can also understand what the future will hold for their components, benefits and applications.

What is SSD storage?

Solid state drive (SSD) storage uses non-volatile solid state chips that feature flash memory cells to store data on a long-term basis. Unlike traditional hard disk drives (HDDs), which use magnetic platters spinning at high speeds to using an actuator arm reminiscent of a record player, SSDs require no moving parts. Instead, the storage solution depends entirely on flash memory to store data, making them much faster at reading and writing data, both ad hoc and in sustained operations.

Using a mesh of electrical cells in a NAND — a type of non-volatile flash memory — to store data, SSDs include an embedded processor known as the controller. It runs firmware-level code to help the drive operate and bridge the media to the host computer via the interface bus. Today’s SSDs don’t require an additional power source that maintains an electrical current into the device at all times to preserve the data. This makes them increasingly more reliable than traditional HDDs (from a mechanical and data integrity standpoint).

SSDs also have built-in technology that further improves read/write speeds, making them faster than traditional HDDs. Historically, HDDs included a bit of memory within the drive hardware itself (typically eight or 16 MBs) to increase the perceived read/write performance. If the data a user wants to read or write can be stored within the high-performing cache memory, the drive temporarily stores the data in the fast memory modules. It then reports back to the operating system once this is complete, triggering the drive to transfer the data from the cache to the much slower magnetic media. This doesn’t always work, as only a small portion of the drive’s total data is cached at any time, and if data isn’t in the cache, it has to be read from the slower physical medium.

SSDs utilize the same kind of concept involving a cache, except they include dynamic random access memory (DRAM) chips — a type of semiconductor memory commonly used in PCs and servers — within the controller hardware on the SSD itself. Ranging from 64 MBs all the way up to GBs, they buffer requests to improve the life of the drive and serve short bursts of read/write requests faster than the regular drive memory allows. These caches are essential in enterprise storage applications, including heavily used file servers and database servers.

When were SSDs first available?

The use of flash memory for longer-term storage has been around since the 1950s, but those solutions were generally in mainframes or larger minicomputers. They also required battery backups to preserve the contents of the memory when the machine was not powered by the host, as those solutions used volatile memory.

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Since then, the technology has gotten smaller and faster, and it no longer requires battery backup. Performance has skyrocketed too, as new PC bus interfaces have made it possible for data transfer rates to far exceed the standard rates that traditional spinning media would saturate. They’re also less expensive today, even compared to the first SSD drive released in 1991 — a 20MB SSD that sold for $1,000.

Applications for SSDs

There are multiple benefits to using SSDs for production storage applications. Because SSDs have no moving mechanical components, they use less power, are more resistant to drops or rough handling, operate almost silently, and read quickly with less latency. Additionally, since there are no spinning platters or actuator arms, there is no need to wait for the physical parts to ramp up to operating speed. This feature eliminates a performance hit that hard drives cannot escape. SSDs are also lightweight, which makes them ideal for laptops, small form factor machines and high-capacity storage area networks in a smaller footprint.

To host both the database engine and the database itself for quick access.

As a “hot” tier in a stratified network storage archive, where frequently accessed data can be retrieved and rewritten very quickly.

In situations where physical shocks are a possibility and HDDs would present an untenable risk to system reliability.

In gaming, where the user is often moving through new environments.

In business settings where you need your operating system and applications to load quickly.

How to choose the right SSD for your needs

PCIe SSDs interface with a system via its PCIe slot — the same slot that is used for high-speed video cards, memory and chips. PCIe 1.0 launched in 2003, with a transfer rate of 2.5 gigatransfer per second (GT/s) and a total bandwidth of 8 Gbps. GT/s measures the number of bits per second that the bus can move or transfer.

Several years later, PCIe 2.0 was introduced, doubling both the bandwidth and the gigatransfer speed, hitting 16 Gbps and 5 GT/s, respectively. Subsequent generations doubled bandwidth and gigatransfer speeds with each new iteration. PCIe 3.0, for instance, features 32Gbps bandwidth and 8 GT/s.

Most recently, SSDs started using the PCIe 4.0 specification, which features bandwidth of 64 Gbps and a 16 GT/s rate. PCIe is now being paired with the non-volatile memory host controller interface specification (NVMe), a communications protocol for high-speed storage systems that runs on top of PCIe.

However, not everyone has a PCIe-enabled system, and some may have PCIe slots in conjunction with other system add-ons, like memory or graphics cards. In these cases, other SSDs like the Samsung 870 EVO are an ideal option for content creators, IT professionals and everyday users. An 870 EVO uses the standard SATA interface to achieve the maximum SATA interface limit of 560/530 MB/s sequential speeds. Samsung 870 QVO also achieves the maximum SATA interface limit, with offerings in the 1, 2, 4, and 8 TB 2.5-inch SATA form factor configurations.

What does the future hold?

In the short term, capacities will continue to ramp up, while the cost per GB for SSDs will continue to decrease. New form factors that increase the number of parallel data transmission lanes between storage and the host bus will emerge to increase the speed and quality of the NAND storage medium.

The physical layer of cells that holds the blocks and pages will improve, offering better reliability and performance. Form factor will also continue to shrink. In 2023, Samsung announced it had reduced cell volume by up to 35%, making its 176-layer 7th-generation V-NAND SSD offering similar in height to its previous generation.

Learn more about how to improve your storage planning and evaluation processes with this free guide.

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