Dell DR series User Manual

Table 1. Internal Drive Capacity and Available Physical Capacity
DR Series Single
Drive Capacity
9 Drive Capacity (12
DRV RAID6 with Hot
Spare) (Decimal)
9 Drive Capacity (12 DRV
RAID6 with Hot Spare)
(Binary)
Total Logical
Capacity @ 15:1
Savings Ratios
(Decimal)
Total Logical
Capacity @ 15:1
Savings Ratios
(Binary)
3 TB (DR4100 only) 27 TB 24.56 TiB 405 TB 368.4 TiB
2 TB 18 TB 16.37 TiB 270 TB 245.55 TiB
1 TB 9 TB 8.18 TiB 135 TB 122.7 TiB
600 GB (DR4X00
only)
5.4 TB 4.91 TiB 81 TB 73.65 TiB
300 GB (DR4X00
only)
2.7 TB 2.46 TiB 41 TB 36.9 TiB
For more general information about the external data storage capacity supported by the expansion shelf enclosures, see
the “DR Series Expansion Shelf” section in DR Series System and Data Operations.
External Drive Capacity
The capacity values listed in Table 2 represent the additional storage capacity in the external drives that are available
when you add the supported expansion shelf enclosures to a DR Series system. Additional data storage can be added
using the expansion shelf enclosures in the following capacities. For more information on the expansion shelf
enclosures, see “Expansion Unit Limits” in the Dell DR Series System Interoperability Guide and Adding a DR Series
System Expansion Shelf, Installing an Expansion Shelf License, and DR Series System - Expansion Shelf Cabling in this
guide.
Table 2. External Drive Capacity and Available Physical Capacity
DR Series System
Drive Capacity
Available Physical
Capacity (Decimal)
Available Physical
Capacity (Binary)
Total Logical
Capacity @ 15:1
Savings Ratios
(Decimal)
Total Logical
Capacity @ 15:1
Savings Ratios
(Binary)
1 TB 8.89 TB 7.9 TiB 135 TB 118.5 TiB
2 TB 17.9 TB 15.9 TiB 270 TB 238.5 TiB
3 TB (DR4100 only) 26.79 TB 23.8 TiB 405 TB 357 TiB
Data Storage Terminology and Concepts
This topic presents several key data storage terms and concepts that help you to better understand the role that the DR
Series system plays in meeting your data storage needs.
Data Deduplication and Compression: The DR Series system design draws upon a wide variety of data-reduction
technologies that include the use of advanced deduplication algorithms, in addition to the use of generic and custom
compression solutions that are effective across a large number of differing file types. The system uses a concept of
content-awareness where it analyzes data to better learn and understand the structure of your files and data types.
Once this is learned, it uses this method to improve your data reduction ratios while reducing resource consumption on
the host. The system uses block deduplication to address the increasing data growth, and this is well suited to providing
the best results for routine and repeated data backups of structured data. Block-level deduplication works efficiently
where there are multiple duplicate versions of the same file. This is because it looks at the actual sequence of the data–
the 0s and 1s–that comprise the data.
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Dell DR series Specifications

General

Brand	Dell
Model	DR series
Category	UPS
Language	English