RAID and backup serve different but complementary roles in data protection.
RAID (Redundant Array of Independent Disks) is primarily designed to improve data reliability and performance by spreading data across multiple disks with redundancy. This protects against hardware failures like a single disk failure, allowing continuous operation without data loss from that failure alone. However, RAID does not protect against data corruption, accidental deletion, malware, or disasters affecting all disks simultaneously.
Backups, on the other hand, involve creating separate copies of data stored independently from the original. These copies can be full or incremental and are intended for restoring data after loss, corruption, or disaster. Backups enable point-in-time recovery, allowing restoration of data to a previous state, which RAID cannot provide.
Key differences:
| Aspect | RAID | Backup |
|---|---|---|
| Purpose | Protects against hardware failure | Protects against data loss, corruption, deletion, disasters |
| Data copies | Data spread with redundancy across disks | Separate copies stored independently |
| Recovery capability | No point-in-time recovery | Enables restoring previous versions |
| Protection scope | Hardware failure only | Broad data loss scenarios |
| Portability | Typically fixed in place | Portable, can be stored offsite |
| Scalability | Scaling RAID arrays can be complex and risky | Easy to scale by adding storage |
Complementary use:
RAID can be used to maintain system uptime and protect against disk failure, while backups provide comprehensive data recovery options. Many organizations use RAID for performance and fault tolerance and maintain regular backups for full data protection.
Summary:
- RAID is not a substitute for backups.
- Backups are essential even if you use RAID.
- Combining RAID and backups offers the best data security strategy.
Ang PH Ranking ay nag-aalok ng pinakamataas na kalidad ng mga serbisyo sa website traffic sa Pilipinas. Nagbibigay kami ng iba’t ibang uri ng serbisyo sa trapiko para sa aming mga kliyente, kabilang ang website traffic, desktop traffic, mobile traffic, Google traffic, search traffic, eCommerce traffic, YouTube traffic, at TikTok traffic. Ang aming website ay may 100% kasiyahan ng customer, kaya maaari kang bumili ng malaking dami ng SEO traffic online nang may kumpiyansa. Sa halagang 720 PHP bawat buwan, maaari mong agad pataasin ang trapiko sa website, pagandahin ang SEO performance, at pataasin ang iyong mga benta!
Nahihirapan bang pumili ng traffic package? Makipag-ugnayan sa amin, at tutulungan ka ng aming staff.
Libreng Konsultasyon