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Storage Data Center Flashcards

7 cards from real CDCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Storage Data Center flashcards as text

  1. Which type of storage media offers the lowest latency for random read/write operations in a data center?

    Answer: NVMe SSD

    NVMe SSDs connect directly via PCIe, bypassing legacy storage controllers, and deliver microsecond-level latency far below any spinning disk.

  2. What is the role of a storage virtualization layer in a data center?

    Answer: To abstract physical storage resources and present them as logical volumes to hosts

    Storage virtualization abstracts underlying physical hardware, allowing administrators to manage logical volumes independent of specific physical devices.

  3. In a data center context, what does 'thin provisioning' allow storage administrators to do?

    Answer: Allocate logical storage capacity that exceeds the currently available physical capacity

    Thin provisioning presents more logical capacity to hosts than physically exists, consuming real space only as data is actually written.

  4. What is the primary advantage of using Fibre Channel (FC) over iSCSI for SAN connectivity?

    Answer: FC provides lower latency and dedicated bandwidth not shared with LAN traffic

    Fibre Channel uses a dedicated, lossless fabric that delivers consistent low-latency performance without competing with general network traffic.

  5. Which storage architecture allows multiple servers to access a shared file system simultaneously over a network?

    Answer: NAS (Network Attached Storage)

    NAS provides file-level access over standard networking protocols like NFS and SMB, enabling concurrent shared access by multiple clients.

  6. What is the purpose of a hot spare drive in a RAID array?

    Answer: To automatically replace a failed drive and trigger array rebuild without manual intervention

    A hot spare remains idle in the array and is automatically incorporated to rebuild the RAID set immediately upon detection of a drive failure.

  7. What is the function of zoning in a Fibre Channel SAN?

    Answer: To control which hosts can communicate with which storage targets on the fabric

    FC zoning restricts fabric communication between specific HBAs and storage ports, providing security isolation and preventing unintended access.