CompTIA Server+ (SK0-005)Server AdministrationMedium
A technician is performing a server OS installation for a new database server. The server has multiple disk drives, and the technician wants to ensure high availability and data redundancy in case of a single drive failure. Which RAID level would best meet these requirements while also providing good read performance?
- ARAID 0
- BRAID 5
- CRAID 1
- DRAID 10
Show answer & explanationAnswer & explanation
Correct answer: B. RAID 5
RAID 5 provides both data redundancy (parity distributed across drives) and good read performance, making it suitable for a database server where high availability and data integrity are crucial.
Why the other options are wrong
- A. RAID 0 offers no redundancy; a single drive failure results in data loss.
- C. RAID 1 (mirroring) provides redundancy but has lower storage efficiency and potentially slower writes than RAID 5 for the same number of drives.
- D. RAID 10 (1+0) offers excellent performance and redundancy but requires at least four drives and has lower storage efficiency than RAID 5.
RAID 5
RAID Level 5 is a striped set with distributed parity. It provides fault tolerance and improved performance by distributing both data and parity information across multiple disk drives.
- Requires a minimum of 3 disks
- Can sustain a single disk failure
- Good for read-heavy workloads
Memory trick: Redundant Array of Independent Disks: Reliability And Immediate Data Protection!