![]() If you later delete that same file from your laptop it appends an ADDITIONAL LINE that starts with a "-". If you add a file to your backup, it appends a line that starts with a "+". ![]() These never shrink (by definition), and never change, it is a PERFECT history of everything that occurs in your backup. Now, the way the backup program started 14 years ago was one bz_done file for each day you backup. That's why you have to wait until "midnight" where "midnight" is around 5pm California time. On midnight LONDON TIME the new file is created "bz_done_20201206_0.dat" (notice the "06" for the 6th of December) and all file names of files that are backed up from that point onward go in this new bz_done file. You can think of bz_done files like there is one bz_done file for each day you backup (I'll explain more down below) but the NAME of your bz_done file today will be something like "bz_done_20201205_0.dat" which means it is backing up in the year 2020, the month 12 (December), and day "05". The code "pauses" when the bz_done file is still 200,000 bytes "short" of the 2 GByte limit. We don't know what your filenames are and we do not want to know, and this way we can work comfortably in and around the files without seeing your filenames.Īt least one post suggests it will magically sort itself out at midnight In our datacenter they are named the 83 characters of hex. ![]() It needs to decrypt this file in order to show you the files to restore, AND TO LOCATE THEM IN OUR DATACENTER. If you set a private encryption key, Backblaze absolutely does not know your filenames. When your client sends the bz_done file to the server, it first reads it into RAM, compresses it, ZIPs it, then it encrypts it AND THEN transmits this encrypted bundle through HTTPS (double encryption protection). If you want to know what the other columns are, there is a decoder ring here (meant to be printed on an 8.5" by 11" piece of paper horizontally "fit to page"): When you sign into the web page and browse your files, it builds the "file tree" by reading your bz_done file (that was sent by the client to the server). Each line is a map of the "fguid" (hex 83 character string that locates your file in the Backblaze datacenter - file globally unique identifier) and the filename of where the file sits on your computer. Ok, so if you are REALLY careful, make a COPY of the bz_done file and want to see what is inside it, open THE COPY in WordPad on Windows (not Notepad) or with TextEdit on the Macintosh, turn off all line wrapping, and make your text editor AS WIDE AS YOU CAN MAKE IT on your screen and you will see there is one text line for each file that you backup. If you ever modify a bz_done file, you have to uninstall, reboot, make sure there are no bz_done files on your system, then re-install and DO NOT USE anything called "Inherit" - because "Inherit Backup State" would download the corrupted bz_done files and your backup wouldn't work any more than if you had not uninstalled and re-installed. I wrote all the code that deals with the bz_done files, and I personally would NEVER attempt to modify those files and expect my backup to work ever again. Please never modify a single byte in the bz_done files or your backup is destroyed. Ok, so this is really super important and I'm not kidding around. RIGHT NOW when the client or server has to unzip, the maximum RAM it would take is 2 GBytes, if we increased that to 8 GBytes it might crash on some wimpy computers, so the best fix is "many more still small" ZIP files. Another fix would be to update the ZIP library on the client, but that has other implications. ![]() The idea was it could be "_1" for the second file in that day, and "_2" for the third file of that day and so on. If you notice, the files are named "bz_done_20201205_0.dat" and the "_0" in front of the ".dat" is completely unused. One way would be to have multiple bz_done files per day (each less than 2 GBytes), and the file names reserved space for this ALREADY. There would be several ways to fix this limitation, it is just that so few customers hit the limitation it doesn't come up much. The limitation is that library the client links with to ZIP the files cannot handle larger than a 2 GByte files to ZIP. Those files are ZIPPED up and sent to the server, and make up the very basis for how you restore. It's a VERY silly reason (I fully admit this), but bz_done files are the "database" of all the files you have backed up. Why does Backblaze care about the size of bz_done files at all? Disclaimer: I work at Backblaze and wrote the code that pauses the backup when the bz_done file is too large.
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![]() As the end of the incubation period approaches, the shells start to soften. They incubate their eggs for 54 to 60 days. In contrast, some are incubated inside the mother’s body, and the mother gives birth after the expiry of the incubation period.įun Fact: Snake species that lay eggs are called oviparous, while those that give birth to live hatchlings are ovoviviparous.īall pythons are oviparous. Certain species of snakes lay eggs and are incubated by the mother until they hatch others are left to hatch on their own without any motherly attention. ![]() In general, there are two types of reproduction methods in snake species. When it comes to reproduction, boas and ball pythons are entirely different. They both do not have movable eyelids, and instead, they have a clear scale that protects their eyes. Nonetheless, they have excellent vision and use their tongue to gather information.Īnother similarity is that they both shed their scaled skin in one piece. This capability is a plus for the ball python as it will enable them to hunt down warm-blooded animals, including small mammals and birds. The heat-sensing pits allow the snakes to detect slight temperature differences. The vestigial limbs in both boas and ball pythons are well developed in males and are very small or absent in females.īall pythons have heat-sensing pits along their lips. The small vestigial limbs (cloacal spurs) are seen near their tail. Both species have two lungs which are not common in most snake species.įurthermore, they both have small vestigial limbs that were a characteristic feature of their ancestors. The boas and ball python have similar anatomy in terms of the vestigial limbs and lungs. In particular, the ball python has a pair of upper jaw bones referred to as premaxilla. A Boa’s head differs from that of the ball python as it has fewer bones.Īdditionally, boas have fewer teeth compare to ball pythons. In terms of anatomy, the ball pythons and boas mainly differ on skull bones and teeth. It is for this reason that boas are sometimes referred to as red tail boas. The markings on the boas usually become bigger as they move towards the tail, and the tail could be totally red. Additionally, they have reddish or brown markings on their skin. Additionally, ball pythons contain different colors of red, black, white, grey, or silver with different patterns and can be stripped horizontally or vertically and spotted among various other patterns.īoas are characterized by shades of brown and vary from grey to tan. It is easy to confuse a ball python and a boa because their colors can be very similar.īall pythons are characterized by deep, brown, and attractive gold markings on their skin. Read Also: Are Ball Pythons Friendliest Animals of the World? 2. Among the python species, the most popular species is the ball python. However, none of these snake species is native to North America and reptile collectors and traders introduced them to the region.įun Fact: The most popular pet boa species are the boa constrictor and rosy boa. This is because both snakes are docile and non-venomous. However, some species of the Boas, such as the Sand Boas, prefer to stay in desert and savannah land, while Rosy boas are found in dry and rocky environments.īoth pet python and boas can be farm-bred, captive-born, or wild-caught imports. They prefer to reside in habitats that range from tropical rain forests to woodland and scrub forests. They are nocturnal and are highly active during wet seasons.īoa snakes are found in Central and South America. Considering that Africa is mainly hot, ball python spends most of the time in burrows. They commonly live near a water source to cool themselves during hot weather. They mainly prefer to reside in grasslands and open forests or areas with some cover. Wild Habitatsīall pythons are mainly found in western to central Africa, north of the equator. They give birth to between 10 and 64 hatchlings per female, but they have an average of 25 hatchlings Comparison between Ball Python and Boa 1. ![]() They have a gestation period of five to eight months, depending on temperature. ![]() However, some species prefer to live in deserts, savannah land, and rocky mountains.īoas are ovoviviparous, meaning they incubate the eggs inside their bodies and give birth to live hatchlings. Their natural habitats include tropical rainforest, woodlands, and scrub forests. There are more than 40 species of boa snakes, and they reside in Central and South America. It is for this reason that boas are sometimes referred to as red tail boas Boas are characterized by shades of brown and vary from grey to tan. ![]() Wedge-shaped cameras (like the Viofo model pictured above) are becoming more and more popular. Of course, cramming lots of features into a small device normally comes with a higher price tag. Dashboard cameras come in various sizes, and smaller (and therefore more discreet) is almost always better. You probably don’t want your camera to stick out like a sore thumb on your car’s windshield. If you’re interested, check out the best-performing 3 channel dash cams here. This setup gives you maximum coverage, leaving almost no blind spots. The latest dash cameras can now record three channels: They have one lens each covering the road ahead, the road behind, and the interior of the car. It may not be quite as good video as the Viofo, but it is fairly reliable and costs less than $100.įor a complete overview of the best and most popular dual dash cams available in 2023, check out our article about the best front and rear dash cams, and have a look at the dual dash cam comparison table. If that sounds like a bit too much for your budget, don’t worry: The 70mai A500S is a decent entry-level dual dash cam. ![]() It’s available for less than $200 in its most basic configuration. Also, you want your dash cam to be reliable, more than anything else: Imagine being in a situation that you need the video footage from, only to find out that your camera decided to take that day off!įor a reliable front and rear dash cam, get the Viofo A129 Plus Duo (pictured above), which records good quality video both ways. Yes, you can get a cheap dual channel cam, but for most models, video quality probably won’t be great. High-end devices with all the latest bells and whistles are currently valued up to $500. The rear camera can either face back into the car’s interior ( taxi/uber cams), or it can look through the rear window and record the road behind your car (the more popular option).ĭue to the complexity of processing two video streams simultaneously, the best dual dash cams often cost more than twice as much as comparable single channel cams. Viofo A129 Plus Duo: Best value front and rear dash cam ( full review) Most of them are from small or little-known manufacturers. They are becoming ever more popular, and there is a huge variety of devices on the market. What To Look For When Selecting A Dash Camĭashboard cameras are also known as dash cams, dashcams, car cameras, car DVRs, or even accident recorders (although they do record a lot more than just accidents). Links to vendors are sponsored links, and help to support this site. Scroll right if the table doesn’t fit on your screen.
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