Should you migrate to Windows Server 2012 R2?
A comprehensive collection of articles, videos and more, hand-picked by our editors
What are Storage Spaces' capabilities in Windows Server 2012 R2?
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
In addition to basic storage virtualization, provisioning and management, Windows Server 2012 Storage Spaces protects data, using snapshots and failover capability to support storage availability. Storage Spaces uses data striping (RAID 0) to break up data between disk groups to run multiple spindles and boost disk performance. When disk problems occur, rebuilds take place using spare pool capacity to preserve storage availability. Periodic background scans that preemptively check and correct disk problems enhance data integrity.
Windows Server 2012 R2 features several Storage Spaces improvements, the most noteworthy of which enables data deduplication to boost performance while minimizing storage capacity requirements. Three new features include storage tiering, write-back caching and dual parity.
Storage tiering allows Storage Spaces to create virtual disks using either magnetic or solid-state media, then places data onto the media that best fits the data usage patterns. For example, data that is frequently accessed can be dynamically located onto a hot tier using SSDs, while less frequently accessed data can be located on cold-tier disks using standard SAS HDDs. Data can also be relocated dynamically as data access patterns change over time. IT or storage administrators can also direct data to desired tiers.
The use of write-back cache caches new data to the storage array, rather than waiting for physical disk writes to complete. This improves storage write performance and allows applications to resume working faster, while reducing I/O traffic in the storage network and subsystem, which is particularly useful in shared storage deployments and tiering.
Finally, Windows Server 2012 R2 Storage Spaces supports dual parity, which can detect and recover from two simultaneous disk failures (rather than a single disk failure for standard parity). When faults occur, the disks can be rebuilt quickly using spare storage capacity to minimize the impact on storage performance during a lengthy disk-rebuild process.
Related Q&A from Stephen J. Bigelow
RAID 5 and RAID 6 are two types of erasure coding. The former protects data with basic parity, while the latter builds in a second layer of parity ...continue reading
Cleanly divided and straightforward applications are good candidates for a container-based deployment, whereas complex applications pose more ...continue reading
Assessing the impact of containers on application workloads can be extremely challenging, partially because of how quickly containers are spun up and...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.