システム管理者は、バックアップ用に新しいストレージ アレイを展開しています。このアレイは 1PB の raw ディスク容量を提供し、14TB のニアライン SAS ドライブを使用します。ソリューションは、1 つの RAID セットで少なくとも 2 台のドライブの故障を許容する必要があります。 次の RAID レベルのうち、この要件を満たすものはどれですか?
正解:D
Explanation RAID 6 is a type of RAID level that uses block-level striping with two parity blocks distributed across all member disks. RAID 6 can provide redundancy and fault tolerance, as it can survive the failure of up to two disks without losing any data. RAID 6 can also support large data sets and high-capacity disks, as it can offer more usable space and better performance than other RAID levels with similar features, such as RAID 5 or RAID 10. RAID 6 is the best RAID level for a systems administrator to use when deploying a new storage array for backups that provides 1PB of raw disk space and uses 14TB nearline SAS drives and must tolerate at least two failed drives in a single RAID set. References: CompTIA Cloud+ Certification Exam Objectives, page 9, section 1.4