Which THREE factors influence the disk I/O performance of an indexer cluster?
Concurrent searches compete with indexing for the same indexer disk bandwidth, so higher search concurrency increases read I/O and can slow bucket operations. This satisfies the stem's factor requirement because search load directly affects the disk I/O demands placed on indexer peers.
Why this answer
Search concurrency (A) is correct because concurrent searches generate simultaneous read operations against index buckets, and higher concurrency increases disk I/O load and contention on the indexers. Daily ingestion volume (B) is correct because the volume of data ingested per day determines how much data must be written to disk, merged, and later read, directly driving I/O throughput and IOPS requirements. Storage latency/type (D) is correct because the underlying disk technology (SSD vs.
HDD, RAID configuration, SAN/NAS latency) fundamentally bounds the achievable read/write performance of the indexer. Deployment server latency (C) is not a factor because the deployment server distributes configuration/apps to forwarders and does not handle index-time data path I/O. Number of users logged in (E) is not a direct factor because user count alone does not determine I/O; it is the searches and ingest those users generate that matter.
Exam trap
SPLK-2002 often tests whether candidates conflate management-plane components (deployment server, license master) with data-plane performance factors — only search concurrency, ingestion volume, and storage characteristics actually stress indexer disks.