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ddevices1 · 6 years ago
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Battery Backup UPS Calculator
In the past, it was difficult to determine the actual performance of the battery backup and the remaining average time until it started to beep before it started. The constant buzz is a reminder that this is what most UPSs in the world have.
While some uninterruptible power supplies (UPS) on the market still report battery power through beeps, there are now several more advanced battery backups with LCD displays that display more statistics than before.
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Knowing the type of UPS you use will help you calculate the amount of load on your device. Off-line UPS is the most common uninterruptible power supply, very portable, and its voltage capacity is usually described in the manual. Their performance rates are easily measured and calculated by their beeps and indicators on the display.
Mathematical formula
Mathematical formulas can also be used to calculate the load time (in hours) and voltage of the UPS battery. This sounds complicated, but once you know the battery capacity, you can calculate the time and load.
Using mathematical formulas to calculate the duration of battery backups on a particular load is academically good, but it is not really recommended when we use spare batteries for everyday use. Battery backups can be faulty and you have to change the formula from time to time to calculate other different loads to determine how many hours it will last. Quite nervous.
Load calculator
According to search engines and the Internet as a whole, there are many websites that offer services such as UPS load calculators, UPS selectors and other UPS services. For example, Tripp lite has a UPS load calculator on its website. You can choose which load category (desktop, server, storage, etc.) to calculate. There is also a list of devices for load and output power capacity.
Speed of the fan
You can also calculate the backup battery performance of the UPS by focusing on the speed of the fan. However, this does not apply to every UPS there. The small UPS does not have a fan. If you have a large UPS with a fan, you should listen to the UPS when the load is plugged into the device. This will help you determine the speed or speed at which the device will discharge at different loads. Once you know it, you will decide when to insert the device and when it will be inserted.
 Observed
It is important to understand the speed at which the backup battery is discharged. It can help you the time remaining before the logical computing device is turned off, and its speed on heavy and minimal connections.
If your UPS uses a replaceable battery, you can decide if the battery is bad or healthy. Also note that UPSs that power too many devices discharge faster than average load UPSs; when a smaller load device is blocked and discharged, you should call it for maintenance.
The UPS with LCD screen can best help you calculate the discharge rate and power performance of the device, because you will see everything on the screen, and you can check the report on the LCD screen from time to time.
The LCD screen is the best choice for battery backup calculations. UPS technicians can also provide additional tools for the load capacity and performance of the UPS.
Conclusion
If you are purchasing a UPS, use a replaceable battery.
They can save you a lot of stress, time and money because you can easily replace the battery or replace it with a new one. UPS batteries will not last forever. No matter how much you charge, you will need to replace them within 5 years.
Related:  7 Things You Need to Consider Before Buying a Hard Drive
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ddevices1 · 6 years ago
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7 Things You Need to Consider Before Buying a Hard Drive
The good news is that hard drive shopping is not that difficult. In fact, there is a lot of flexibility and room! As long as you follow these guidelines, you don't have to worry about buying the wrong hard drive and losing your money.
All hard drives are dead. This is a fact in life, it is normal to buy a new one every few years, either replacing the old hard drive or using it as an additional backup drive. But there are many options, which kind of hard drive should you buy?
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1. Hard disk drive and solid state drive
The absolute first decision you must make when purchasing a data storage drive is whether you need a solid state drive (SSD). Although SSD has the same functions as a traditional hard disk drive (HDD), it has some advantages and disadvantages.
SSDs are data drives that use flash instead of rotating metal disks in traditional HDDs. Think of it as a huge USB drive or SD card. But in any case, how important is this difference?
Well, there are benefits. First, SSDs can read and write data faster. Second, SSDs consume less power, saving energy and extending the battery life of laptops. Third, SSDs have no moving parts, so they do not generate noise and have a longer life.
2. Hard disk size and interface
Once you decide to use a hard drive and a solid state drive, you must choose a form factor. Fortunately, there are only two options, and the right choice depends primarily on your current settings.
There are two forms of data drives: 3.5-inch drives and 2.5-inch drives.
In traditional HDDs, data is stored on rotating metal disks, which means that more data is needed to expand the data capacity. For this reason, desktop hard drives are often 3.5 inches, typically up to 12 terabytes, while laptop hard drives are often 2.5 inches and typically have a maximum capacity of 4 terabytes.
On the other hand, SSDs can be made smaller because they do not require moving parts. Therefore, most SSDs come in a 2.5-inch form factor. What if you need to install the SSD into a 3.5-inch connector? The adapter is available.
In terms of connectivity, most modern consumer drives (HDD and SSD) use SATA connectors. Older hard drives created before the SATA standard are most likely to use the IDE connector. If you purchase an external hard drive, it will connect to your system via the USB port.
3. Hard Drive Specifications and Performance
Now that you know what drive to buy, it's time to find the drive that best suits your needs. Here's what you need to consider: storage capacity. HDDs come in a variety of sizes, and each drive has a capacity of 16TB due to physical limitations. On the other hand, SSDs are much smaller, reaching 60TB, but affordable consumer SSDs rarely exceed 4TB.
Transfer speed. The performance of consumer HDDs is determined by many factors, but the revolutions per minute (RPM) is an important factor. A higher RPM means faster transfer of data to and from the drive.
You can ignore the SATA speed of the drive. For example, modern drives may be listed as 3.0GB / s and 7200RPM. The first value is the SATA speed, which describes the theoretical maximum speed of the SATA connection. No hard disk can transfer data at this speed. However, the 7200RPM drive is always faster than the 5400RPM drive.
Cache space. When a hard disk needs to transfer data from one part of the drive to another, it utilizes a special area of ​​embedded memory called a cache or buffer.
Larger caches make data transfer faster because more information can be stored at once. Modern HDDs can have a cache size of 8MB to 256MB.
Interview time. Traditional hard drives have other performance-impacting factors, such as the time it takes the reader to position itself to read data from or write data to the drive.
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4. The price and cost of the hard disk
When shopping, you will encounter a variety of hard drive prices for devices that look very similar in appearance. It's up to you to decide which factors and features are most relevant to your needs, and then choose the hard drive that fits those needs.
That is, one way to determine value for money is to divide the price of the drive by its storage capacity to get a price per gigabyte.
Which one provides the best value? 6TB model. The price per gigabyte for 1TB, 2TB, 4TB and 6TB models decreases as storage space increases. However, there are other drives that do not scale in price. So you have to be careful. Some drives cost more per gigabyte at higher capacity.
5. External hard drive and internal hard drive
The final consideration is whether the drive is installed in a desktop or laptop enclosure, or externally and connected to various devices. This is a simple decision, but let's take a look at each of the pros and cons.
External drives are ideal for storage, backup and transfer. They are usually connected using USB 2.0, 3.0 or 3.1, and their maximum transfer speeds are 60MB / s, 625MB / s and 1,250MB / s. USB 3.1 is of course preferred, but not required unless you transfer hours of data back and forth every day.
The external hard drive is portable. Just unplug the USB plug and plug it in somewhere else. They can also be plugged into TV and media centers to play media directly.
6. Game hard drive: PlayStation, Xbox, PC
Your hard drive selection can have a major impact on game performance, which is why we always recommend using SSD for games. This applies to PC, Xbox One, Xbox One X, PlayStation 3, PlayStation 4, and PlayStation 4 Slim, PlayStation 4 Pro or any newer console.
Since the SSD speed is much faster than the HDD speed, the game will start faster and load much faster between levels, stages and maps. Seriously, the difference between SSD and HDD for games is day and night. You will regret getting the hard drive!
7. Built-in and external hard drives for Mac
If you are using a MacBook Air, MacBook Pro, Mac Mini or iMac, there are some extra considerations to be aware of when purchasing a hard drive.
Built-in Mac hard drive
The most important thing is that the Mac hard drive upgrade is almost a DIY project. You must disassemble the device to reach the internal drive, carefully replace it, and then put all the components back together. Even the simplest replacement takes at least an hour. This will also invalidate your warranty and any AppleCare insurance you may have.
External hard drive for Mac
For external drives, you have multiple connection options listed in order to increase data transfer speed: USB 2.0, USB 3.0, USB 3.1, Thunderbolt 2, and Thunderbolt 3 (also known as USB Type-C). We recommend using USB 3.0 as the absolute minimum application.
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Mac devices use Apple's unique file system, so external hard drives should be formatted as HFS + (Mac OS Extended) or Apple File System (APFS) for optimal performance.
But please note that most non-Apple devices will not be able to read HFS+ or APFS drives! There are ways to read HFS+ on Windows, but APFS is so novel that compatibility is severely limited. The only format available for Mac and Windows is FAT32.
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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Introduction to Tape Backup
Introduction
If you run your own company, consider how to save important documents. You may be saving them to a central server. But what are you doing to make sure your files are not lost in the event of a fire or other disaster? What many people don't realize is that although you can ensure your home and equipment, you can't guarantee the security of your documents. You cannot backup or repair lost files. In fact, they are lost!
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If you run a small business, it's likely to save important files to the server. But what happens when a disaster strikes? How do you ensure that your files are not lost? Many people are unaware that losing files can weaken their business. You can ensure your office and equipment, but you can't guarantee the security of your documents. You cannot repair or buy back lost files. In fact, they are lost!
This brings the concept of disaster recovery. What is disaster recovery? If you think that disaster recovery is frantically trying to retrieve data that has been lost, then you are already behind 8 goals! Disaster recovery is about protecting your organization's data so that it can be safely recovered in the event of a serious disaster.
You should consider implementing a disaster recovery plan for your business. Disaster recovery is about protecting all critical files and data so that they can be recovered in the event of a fire or other disaster. For many businesses, this may also include Exchange Server and SQL Server files.
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All you need to do is make sure that all the files on the server are backed up to another storage medium (tape, removable hard drive, NAS device, etc.). Most companies choose to use tape.
Tape... perfect backup media
The tape may be a dinosaur in the era of the disc, a removable hard drive and a large amount of random storage media, but it is ideal for backup. Cheap and large, there aren't many storage media around to provide gigabytes per gram. You need storage media to store all the files needed for backup, and the tape should be sufficient for your enterprise's server needs.
When should I back up?
Typically, server backups are performed at the end of each day. If your server is experiencing a catastrophic disaster, you save at least all the files from the previous day.
Tape Rotation
The ideal tape backup solution will involve using a new tape for each backup. This means buying new tapes for your business operations every day. This is almost not cost effective for your business. The tape is cheap, but not cheap!
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This is why we call "tape rotation." Tape rotation means reusing the tape from the previous backup. The simplest tape rotation scheme is to have a tape every day of the week. You can recover data from any tape in the library - or in this case, any day of the past week. This strategy requires only five tapes, but only provides a one-week data backup history.
Digital Devices Ltd is one of Europe's leading independent providers of IT infrastructure and cloud services. Our expertise includes operational efficiency, security, infrastructure, and cloud services. We connect our global influence with local expertise.
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ddevices1 · 7 years ago
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What are UPS and different types of UPS?
Introduction:
Today, most businesses of any size rely on clean, continuous power from uninterruptible power supplies (UPS) to prevent service loss, data loss, and damage to sensitive IT and communications equipment. Properly designated UPS systems from reputable suppliers will provide this power protection during short-term power disturbances and power outages, but not indefinitely. If the company's IT must remain online instead of gracefully shutting down during periods of long power outages, a backup generator is needed to supplement the UPS system.
What is UPS?
Uninterruptible power supply (UPS) equipment keeps computer systems and IT equipment safe and operational during surges and faults. An uninterruptible power supply (UPS) provides a backup battery when the current drops to an inappropriate voltage or stops. Uninterruptible power supplies are critical to mission-critical environments. Depending on the size and technology of the UPS unit, backup power is supplied for a specific period of time until the generator can be activated or the network components are properly shut down. Protect your computer and accessories from damage when current is sufficient. UPS units can help effectively shield individual devices or the entire data center.
What are the different types of UPS?
There are three main types of uninterruptible power supplies, and UPS systems can be used to meet a variety of applications. They meet the needs of businesses and consumers. The standby UPS is an offline device that detects electrical faults and automatically switches to battery power. The other two UPS categories are Line Interactive and Online, and online is a more expensive option. Each type of UPS keeps the network device up and running when power is not available. Functions such as function metering vary by model.
What are a backup UPS?
The Basic Standby UPS is an uninterruptible power supply that provides short-term battery power during a power outage. For this type of UPS, the hardware receives power from the direct AC connection under normal conditions. The standby unit and its inverter are basically in a hold state until a backup power source is required. Depending on the model, the UPS backup can also protect data and sensitive equipment from surges, spikes, and dips. Compact devices are available for home network protection. Standby UPS is typically used to protect computers, modems, VoIP equipment, and other hardware. This type of UPS is the cheapest of the three UPS types.
If you are looking for discounts on UPS items, please visit the digital devices ltd. The price of APC UPS is also very cheap here, and we strive to build long-term, trustworthy relationships with all our customers and suppliers.
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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ddevices1 · 7 years ago
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