CDIA Storage Solutions 4 — Questions and Answers
Question 1: What is 'thin provisioning' in enterprise storage for document imaging systems?
- Allocating only the minimum storage needed for a document's first page
- Allocating storage capacity on demand rather than reserving all space upfront (Correct answer)
- Reducing image resolution to save storage space
- Splitting large documents across multiple storage devices
Correct answer: Allocating storage capacity on demand rather than reserving all space upfront
Thin provisioning allocates storage dynamically as data is written rather than reserving the full amount upfront, improving utilization efficiency in document repositories.
Question 2: In a disaster recovery plan for document imaging, what does 'RPO' stand for and what does it measure?
- Recovery Point Objective — the maximum acceptable data loss measured in time (Correct answer)
- Recovery Process Overview — a summary of restoration procedures
- Redundant Path Operation — network failover capability
- Remote Physical Output — off-site printing capacity
Correct answer: Recovery Point Objective — the maximum acceptable data loss measured in time
Recovery Point Objective (RPO) defines how much data loss is acceptable by specifying the maximum time interval between the last backup and a potential disaster.
Question 3: Which protocol is most commonly used to access object storage via a web-based API in cloud document imaging solutions?
- FTP (File Transfer Protocol)
- SMB (Server Message Block)
- REST/HTTP with S3-compatible API (Correct answer)
- iSCSI (Internet Small Computer Systems Interface)
Correct answer: REST/HTTP with S3-compatible API
RESTful HTTP APIs, particularly Amazon S3-compatible interfaces, have become the standard for accessing object storage in cloud-based document management systems.
Question 4: What is a 'storage snapshot' and how does it benefit a document imaging system?
- A thumbnail preview generated from each stored document
- A point-in-time copy of storage state that enables fast recovery without full backup restoration (Correct answer)
- A physical photograph of the storage hardware for insurance purposes
- A report showing current storage utilization levels
Correct answer: A point-in-time copy of storage state that enables fast recovery without full backup restoration
A storage snapshot captures the state of a volume at a specific moment, enabling rapid rollback to that point if documents are corrupted or accidentally deleted.
Question 5: When evaluating storage for a high-volume document scanning operation, which metric most directly impacts how many documents can be written per second?
- Storage capacity (TB)
- Write IOPS (Input/Output Operations Per Second) (Correct answer)
- Network bandwidth (Mbps)
- Mean Time Between Failures (MTBF)
Correct answer: Write IOPS (Input/Output Operations Per Second)
Write IOPS directly measures how many individual write operations a storage system can handle per second, which is critical for high-volume scanning ingestion pipelines.
Question 6: What does 'geo-redundant storage' provide in a cloud-based document imaging architecture?
- Location-based access restrictions for documents
- Replication of data across geographically separated data centers for disaster resilience (Correct answer)
- GPS tagging of document metadata with physical location information
- Regional pricing optimization for storage costs
Correct answer: Replication of data across geographically separated data centers for disaster resilience
Geo-redundant storage automatically replicates data to a secondary data center in a different geographic region, protecting against site-wide outages or natural disasters.
Question 7: In document imaging storage planning, what is the '3-2-1 backup rule'?
- Keep 3 document versions, back up 2 times weekly, and store 1 copy offsite
- Maintain 3 copies of data, on 2 different media types, with 1 copy stored offsite (Correct answer)
- Back up 3 times daily, retain 2 weeks of backups, and test 1 restore per month
- Use 3 storage vendors, 2 cloud providers, and 1 on-premises solution
Correct answer: Maintain 3 copies of data, on 2 different media types, with 1 copy stored offsite
The 3-2-1 rule recommends keeping 3 total copies of data on 2 different storage media types with at least 1 copy stored at a separate offsite location.
CDIA Storage Solutions 4
What is 'thin provisioning' in enterprise storage for document imaging systems?