Company ABC's SAN is nearing capacity, and will cause costly downtimes if servers run out disk space. Which of the following is a more cost effective alternative to buying a new SAN?

Question

Options

• AEnable multipath to increase availability
• BEnable deduplication on the storage pools
• CImplement snapshots to reduce virtual disk size
• DImplement replication to offsite datacenter

• A
  8% (4)
• B
  88% (46)
• C
  2% (1)
• D
  2% (1)

Explanation

Enabling deduplication on the storage pools (B) is the most cost-effective alternative. Deduplication identifies and eliminates redundant blocks of data, storing only unique data and referencing duplicates rather than storing them multiple times. This can dramatically increase effective storage capacity - sometimes by ratios of 2:1 to 10:1 or more depending on data type - without purchasing new hardware. Multipath (A) increases availability and redundancy but does not increase capacity. Snapshots (C) actually consume additional storage space rather than reduce it. Replication to an offsite datacenter (D) duplicates data to another location and also does not free up local capacity - it adds cost and complexity.

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