Explain SRDF Concepts and Use Cases. POWERMAX-DESIGN-V2 Practice Questions (Page 3)

Questions 11–15

1. 11expert · hard

   A global company has a primary PowerMax in New York, a secondary PowerMax in London, and a tertiary PowerMax in Singapore. The company wants to replicate data from New York to London for disaster recovery, and from London to Singapore for additional protection. The DR site in London must have zero RPO, while the Singapore site can tolerate up to 5 minutes of data loss. Which SRDF topology and mode combination should the architect choose?

   • AMulti-hop topology with synchronous mode from New York to London and asynchronous mode from London to Singapore
   • BOne-to-many topology with synchronous mode to both London and Singapore
   • CMany-to-one topology with asynchronous mode from New York to London and synchronous mode from London to Singapore
   • DOne-to-one topology with synchronous mode from New York to London and a separate one-to-one pair from London to Singapore
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2. 12foundation · medium

   In SRDF architecture, what is the role of the R2 (remote) side device?

   • AIt is the source device that receives host writes
   • BIt is the target device that holds the replica of the source data
   • CIt is the device used for data compression on the remote array
   • DIt is a local snapshot of the source device
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4. 13expert · hard

   A company uses SRDF/A to replicate a database and its transaction logs to a DR site. The database and logs are on separate devices. During a disaster recovery test, the remote copy of the database is consistent, but the remote copy of the transaction logs is from a slightly earlier point in time. The company requires that the database and logs be recoverable to the same point in time. What should the architect do?

   • APlace the database and log devices in the same SRDF consistency group
   • BIncrease the SRDF link bandwidth
   • CSwitch to synchronous mode for the log devices
   • DUse a multi-hop topology to replicate the logs separately
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5. 14expert · hard

   A company is migrating from an old PowerMax to a new PowerMax. The migration must be completed within a maintenance window, and the company wants to minimize downtime. The architect plans to use SRDF data migration. What is the most important factor to consider to ensure the migration completes within the window?

   • AThe consistency group must include all devices
   • BThe remote site must be in the same data center
   • CThe initial copy must complete before the cutover, so the link speed and data size are critical
   • DThe SRDF mode must be synchronous to ensure zero data loss
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6. 15foundation · medium

   What is a key trade-off of using SRDF asynchronous mode compared to synchronous mode?

   • AAsynchronous mode provides the same RPO as synchronous but with less overhead
   • BAsynchronous mode eliminates the need for a remote array
   • CAsynchronous mode has a higher RPO but reduces the impact of distance on host write latency
   • DAsynchronous mode provides a lower RPO but requires more bandwidth
   Reveal Solution Discussion Select an answer first