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00:00:00 – 00:20:14
The video discusses Western Digital's 20 terabyte hard drives utilizing shingled magnetic recording and helium-filled enclosures for efficiency. Seagate's 20 terabyte drives, head crashes, and DriveSavers are also mentioned. Challenges in increasing hard drive capacities and performance are highlighted, with technologies like dual actuators and multi-platter solutions being explored. The evolution of USB thumb drives from small capacities to multi-terabyte drives is explored. The complexity of data management, reliability, and cost trade-offs in data centers are discussed. The limitations and purpose of SSHD (solid-state hybrid drive) are examined. The psychological impact of a 20 terabyte storage drive and the importance of safe backup practices are emphasized, along with personal experiences and adjustments made for better performance.
00:00:00
In this segment of the video, Western Digital’s 20 terabyte hard drives are discussed. These drives are being sampled by enterprise OEMs and utilize shingled magnetic recording and helium-filled enclosure technology to improve efficiency. Shingled magnetic recording allows for tracks on the drive platter to be overlapped, increasing data density without a read penalty but incurring a write performance penalty. This technology has been used in the past by Seagate for archive series drives. The write penalty may not significantly impact write once read many applications, but heavy random input/output tasks may suffer. The new drives use nine platters.
00:03:00
In this segment of the video, it is discussed how traditional hard drives use a single platter, while new drives contain nine platters packed tightly. The need for helium is explained to reduce air resistance for efficiency. If one platter fails, it does not necessarily mean the whole hard drive is lost, as experts like DriveSavers can potentially replace the damaged part. The concept of head crash is described, where data may be scratched but still recoverable. Seagate’s 20 terabyte drives are highlighted, mentioning their two and a half million hour MTTF. The challenge of hard drive speed improvements is linked to bit size reduction or faster spinning. Seagate is mentioned to be working on dual actuator technology to enable simultaneous read and write operations. The potential capacity of a 60-drive storage array with 20 terabyte drives is calculated at 1.2 petabytes.
00:06:00
In this segment of the video, the speaker discusses the challenges of increasing hard drive capacities while maintaining performance due to limitations in spinning speeds and data placement. They mention complex technologies like dual actuators to enhance performance but note that simply adding more platters is the current solution. The speaker gives a hypothetical example of a 20 terabyte drive writing 200 megabytes per second, illustrating the limits of current hard drive technology in terms of performance optimization. Additionally, there is a brief interruption as they discuss shirt stock on the LTTE store before reflecting on the evolution of USB thumb drives and their significance.
00:09:00
In this segment of the video, the speaker discusses the evolution of USB thumb drives, starting from their small capacity in the past to the larger and more reliable drives available today. They recall the early days of using 16-megabyte thumb drives and how they have now progressed to multi-terabyte portable drives that can be accessed using USB 3 or Thunderbolt 3 interfaces. The conversation touches on the improvement in drive capacities, with current drives being significantly larger than older models. The speaker also ponders the practicality of extremely large hard drives for storage needs and questions whether they are becoming impractical despite being more affordable.
00:12:00
In this segment of the video, the speaker discusses the evolving landscape of hard drive storage and data management. They mention the increasing complexity of data management schemes and the challenges faced by general consumers who may not afford such setups. The speaker highlights that some datacenter and enterprise clients prefer using less complex, older hard drives due to better reliability, even if it means deploying more servers for storage. The conversation delves into drive capacities, reliability reports, and the trade-off between drive costs and total ownership costs within data centers.
00:15:00
In this segment of the video, the speaker discusses the limitations and purpose of SSHD (solid-state hybrid drive). SSHD has a small SSD cache that stores frequently accessed data to improve responsiveness. However, SSHD may not significantly help with tasks like writing or reading data across the entire surface of a drive. The speaker illustrates a scenario where multiple SSHDs are at risk if one fails, emphasizing the importance of data restoration processes and potential risks associated with relying on multiple drives in an enclosure.
00:18:00
In this segment of the video, the speaker discusses their use of hard drives and the evolution of storage capacity from gigabytes to terabytes. They highlight the psychological impact of having a 20 terabyte storage drive and emphasize the importance of practicing safe backup habits. The speaker mentions their previous issues with slow file loading due to power-saving measures and explains how they made adjustments to improve speed by disabling the drives’ sleep function. Additionally, there is a reference to considering moving data to an SSD server but ultimately deciding against it.