User Manual
Table Of Contents
- Dell EMC PowerEdge R250 Technical Guide
- Contents
- System overview
- System features and generational comparison
- Chassis views and features
- Processor
- Memory subsystem
- Storage
- Expansion cards and expansion card risers
- Power, thermal, and acoustics
- Rack, rails, and cable management
- Supported operating systems
- Dell EMC OpenManage systems management
- Dell Technologies Services
- Dell EMC ProDeploy Enterprise Suite
- Dell EMC Remote Consulting Services
- Dell EMC Data Migration Service
- Dell EMC ProSupport Enterprise Suite
- Dell EMC ProSupport Plus for Enterprise
- Dell EMC ProSupport for Enterprise
- Dell EMC ProSupport One for Data Center
- ProSupport for HPC
- Support Technologies
- Dell Technologies Education Services
- Dell Technologies Consulting Services
- Dell EMC Managed Services
- Appendix A: Additional specifications
- Appendix B. Standards compliance
- Appendix C Additional resources
Table 12. HDD feature matrix (continued)
Type Interface Form Factor RPM Sector Security Capacity
HDD 12 Gbps SAS 3.5 7.2K 512e FIPS-140 16 TB
HDD 12 Gbps SAS 3.5 7.2K 512e ISE 18 TB
HDD 6 Gbps SATA 3.5 7.2K 512n ISE 2 TB
HDD 6 Gbps SATA 3.5 7.2K 512n ISE 4 TB
HDD 6 Gbps SATA 3.5 7.2K 512e ISE 8 TB
HDD 6 Gbps SATA 3.5 7.2K 512e ISE 12 TB
HDD 6 Gbps SATA 3.5 7.2K 512e ISE 16 TB
HDD 6 Gbps SATA 3.5 7.2K 512e ISE 18 TB
This document is updated as changes happen, so be sure to bookmark it rather than downloading an offline copy to stay with
the latest information or refer to the Drive and Platform Matrix.
HDD facts
A HDD (Hard Disk Drive) is a storage media characterized by a set of spinning platters with arms to move recording heads over
the surfaces to the right locations for reading and writing designated data.
Figure 12. Hard disk drives
The heads read or write the data and transfer it through the interface to the server. That interface for Dell standard enterprise
HDDs can be either Serial Attached SCSI (SAS) or Serial ATA (SATA) and affects the speed at which data is transferred.
Typically, SATA is 6 gigabits/sec. where SAS is 12 gigabits/sec so throughput for SAS can be twice that of SATA. Additionally,
due to better signal to noise ratios, SAS can have longer cable lengths, allowing it to connect to external data storage. SAS is
also considered a more robust protocol.
Enterprise HDDs are typically used with multiple-user servers running enterprise software. Examples are transaction processing
databases, internet infrastructure (email, webserver, e-commerce), scientific computing software, and nearline storage
management software. Enterprise drives commonly operate continuously ("24/7") in demanding environments while delivering
the highest possible performance without sacrificing reliability.
The fastest enterprise HDDs spin at 10,000 and 15,000 rpm, and can achieve sequential media transfer speeds above 290 MB/s.
Drives running at 10,000 or 15,000 rpm use smaller platters to mitigate increased power requirements and therefore generally
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Storage