One factor that can impact a disk's performance in a safety and security video system is the cluster size of the formatted hard disk.
Dell EMC recommends the following allocation unit size settings:
- Multi-tier implementation-Live DB
- Change the allocation unit size setting to 8 KB when formatting the hard disk for the Live DB in a two-tier structure. This block size is better suited for the balanced reads and writes rate caused by the archive process.
- Multi-tier implementation-Archive DB
- Change the allocation unit size setting to 64 KB when formatting the hard disk for the Archive DB. A 64 KB block size significantly improves the performance of the archive process.
- Single-tier implementation
- Change the allocation unit size setting to 64 KB when formatting the hard disk for the Live DB only.
See the Microsoft Support article Default cluster size for NTFS, FAT, and exFAT for more information about single and multi-tier allocation unit sizes.