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Select fd00 (Linux RAID) for file system type.Īfter the above steps, an empty partition /dev/sda1 will be created. Select the start/end sector to include the whole disk. Note this will erase all data in the disk.
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Seagate has also declared all its Ironwolf series (NAS) are not using SMR.
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As the time of writing, WD has published the full list of drives using SMR. Before purchasing any hard drive, you should investigate whether it’s SMR or not. As a result, SMR is not ideal for NAS application, and especially it’s not recommended to mix SMR and PMR drives in a RAID setup. However, many reports show SMR has significant performance issues in heavy read/write scenarios due to its overwriting mechanism. In short, most hard drive manufacturers have been adopting SMR to reduce cost over the years. One thing worth noting is that recently there have been many discussions around performance differences between Shingled Magnetic Recording (SMR) and Perpendicular Magnetic Recording (PMR). Mechanical drives (HDDs) are typically used due to their large capacity over low prices.
Purchase Hard Drivesįirst we need to prepare the hard drives for RAID.
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This article introduces the setup of software based RAID setup on Linux. RAID can be implemented with either hardware (RAID controller) or software. To protect valuable data, RAID is a very popular technology to offer data redundancy automatically – which means data can be still intact even after some of the drives fail.
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However, the downside of a home NAS solution is that compared with a professional cloud service provider, the data is more vulnerable to hard drive failures due to less reliable consumer grade hardware and lack of frequent routine backups. In contrast, for a home NAS, by choosing the proper network hardware (such as in this Multi-Gigabit Home Network Setup Tutorial), you can easily access much faster local network at a fair cost. In a cloud based solution, the file transfer speed is bottlenecked by both ISP (internet speed) and cloud service provider, both you have limited control over and cost a great fortune to upgrade. in my field finite element analysis of a large model can quickly generate huge amounts of data. Simulations have been playing more and more important roles and e.g. This is the same for scientific researchers. And for content creators, the most important reason is speed! The file sizes have been growing exponentially – E.g., minutes of 4K raw footage can easily occupy gigabytes of storage. Some make decisions after calculating the cost. Some people are concerned about data security and privacy.
Lsblk -l NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT I/O size (minimum/optimal): 512 bytes / 512 bytesĭevice Boot Start End Sectors Size Id Type Sector size (logical/physical): 512 bytes / 512 bytes
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I make backup by 'dd' command and nextly I download this backup (wget) by server 2 (490gb, ~ 24hours downloading). Second is tested server with Ubuntu 18.04 - KS-4 Server - Atom N2800 - 4GB DDR3 1066 MHz - SoftRAID 2x 2To SATA - when I want test my backup. First is my main server which I want to backup.
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