Zone Based Storage
1 ZNS
- Limited overlap reduce the write amplification for memory hold the last sector;
- MultiStream: Hot(Journal, WAL), Normal(Dump), Low(BackgroundTask);
- Better OP;
- Vendor
- AWS: Nitro SSD https://aws.amazon.com/blogs/aws/aws-nitro-ssd-high-performance-storage-for-your-i-o-intensive-applications/
- Samsung: PM1731a https://news.samsung.com/us/samsung-introduces-first-zns-ssd-maximized-user-capacity-and-enhanced-lifespan/
- WD ZNS540: https://blog.westerndigital.com/zns-ssd-ultrastar-dc-zn540-sampling/
2 SMR HDD
- Archive Storage
- WD 26TB SMR HDD: https://www.anandtech.com/show/17377/western-digital-announces-22tb-cmr-and-26tb-smr-hdds