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00:00:00 – 00:12:44
The video delves into the benefits and functionalities of Synology Hybrid RAID (SHR) compared to traditional RAID systems. Initially introduced in 2010, SHR is widely supported in Synology’s home and SMB NAS products but not in their enterprise enclosures. SHR's flexibility allows users to start with a single disk and expand storage by adding mixed-size disks, making it a cost-effective solution for growing storage needs. It parallels traditional RAID configurations in terms of fault tolerance, with SHR and SHR2 offering one or two disk failure protections, respectively.
The video emphasizes SHR's adaptability to use larger disks, thus maximizing available storage space and enabling users to build arrays that adjust according to disk sizes. SHR2 is particularly recommended for setups with more than five disks to enhance fault tolerance. Key precautions include maintaining backups, using uninterruptible power supplies (UPS) to prevent power loss, and conducting regular data scrubbing to avoid data corruption. The importance of selecting high-performance and reliable disks while avoiding SMR disks for NAS setups is highlighted.
Synology tools for storage planning and the reliability of btrfs file systems are also discussed. The presenter concludes by sharing their positive experiences with SHR2, urging viewers to engage with the content for future discussions.
00:00:00
In this part of the video, the presenter compares traditional RAID implementations with Synology Hybrid RAID (SHR) and its offerings based on the Btrfs file system. Synology introduced SHR in 2010, which is now widely supported in their home and SMB NAS products but not in their Enterprise class enclosures. Despite a disclaimer indicating SHR is not for advanced users, the presenter argues that SHR is powerful and beneficial for many users. SHR is compared to standard RAID types (RAID 1, RAID 5, RAID 6) in terms of usability and functionality. RAID 1, 5, and 6 have equivalents in SHR, named SHR and SHR2, which offer the same fault tolerance (one or two disk failures). The presenter notes that while terms and underlying mechanics differ, the functional outcomes are similar, and a deeper dive will be covered in a follow-up video.
00:03:00
In this part of the video, the presenter elaborates on the advantages of Synology Hybrid RAID (SHR) over traditional RAID systems. SHR allows users to start with a single disk without fault tolerance and later expand by adding more disks to achieve fault tolerance similar to RAID 1 mirror setups. SHR is particularly beneficial because it permits the use of mixed-size disks within an array, which provides flexibility and cost-effectiveness for growing storage needs. The presenter also emphasizes the importance of using disks with equivalent performance and reliability and avoiding SMR disks in a NAS setup. Additionally, a Synology tool is highlighted to help users understand and plan storage expansion. The mechanics of RAID vs. SHR are compared, showing that traditional RAID requires all disks to be the same size, and expansion necessitates replacing all disks sequentially to utilize increased storage capacity.
00:06:00
In this part of the video, the speaker discusses the advantages of using Synology Hybrid RAID (SHR) over traditional RAID configurations. SHR allows for greater flexibility and efficiency in storage expansion. Using a step-by-step example, the speaker explains how adding disks of varying sizes contributes to usable storage space, beginning with no fault tolerance and moving towards larger configurations with integrated data protection. The key benefit highlighted is SHR’s ability to maximize the use of larger disks by creating arrays that adjust based on available disk sizes. This method ensures that storage needs can adapt and expand with cost-effective, larger disks as they become current best value for money.
00:09:00
In this segment, the video discusses creating large disk volumes with SHR2 for enhanced fault tolerance when using more than five disks. It advises on converting from SHR to SHR2 by adding a new disk and migrating, emphasizing the benefits of two-disk tolerance for added protection during array rebuilds. It’s critical to maintain backups as RAID rebuilds can fail and data can be damaged. SHR and SHR2 configurations are explained in terms of required disks for usable storage. The video highlights SHR’s flexible data protection and growth capabilities without needing to replace entire disk sets, and it addresses Synology’s cautious language around enterprise support due to technology maturity. Three key considerations mentioned are: RAID is not a substitute for backups, using a UPS to mitigate power loss risks, and running regular scrubs to prevent data corruption from bit rot. The importance of these preventative measures is stressed, particularly for btrfs file systems.
00:12:00
In this part of the video, the speaker discusses the benefits of using Synology Hybrid RAID (SHR), emphasizing its flexibility in disk selection and its ability to maximize disk value. The speaker mentions their personal experience running SHR2 on their Synology NAS, highlighting its reliability and smooth performance during tasks like data scrubbing and disk replacement. The speaker concludes by encouraging viewers to like and subscribe, share their comments, and mentions that their feedback helps in addressing interesting topics in future videos.