Western Digital Ultrastar MEMORY DRIVE User Manual

Ultrastar

MEMORY DRIVE

DATA S H E ET

Ultrastar DC ME200 Memory Extension Drive,

NVMe 2.5-inch U.2 and PCIe AIC HH-HL

Highlights

• Enables scaling of system memory, typically up to

24T iB1 per 1U server and 96TiB in 4U servers

• Delivers DRAM-like performance for key

enterprise applications and workloads*

• Transparent to existing OS and applications

• Promotes server consolidation

• Fits most industry-standard ser ver models

MEMORY DRIVES

Memory Expansion for the Data Center

The digital economy has created signiﬁcant demands for both real-time and batch processing of large data sets. IT organizations across the world are leveraging in-memory computing to drive superior application performance and obtain meaningful insights through the use of advanced business analytics.

However, in-memory computing can become bottlenecked by set limitations on the amount of memory available to the server, as well as prohibitive DRAM pricing.

Ultrastar® DC ME200 Memory Extension Drive can be used to scale existing system memory, promote server consolidation, and reduce the complexity of splitting large multi-TB data sets across multiple servers. Ultrastar memory drive provides applications with large amounts of system memory at a fraction of the cost of DRAM. Advanced software algorithms work to maintain near DRAM-like performance across a variety of applications, especially targeting highly parallel workloads with high numbers of transactions. Once installed, the solution is transparent, requiring no changes to the existing OS and application stacks.

Applications

• Business Analytics

• Data Warehousing

• Application Caching

• Server Virtualization

• Container-Based Applications

• Genomics & AI Research

• Real-Time Analysis

• Cloud Services and SaaS

• IoT, Time-Series Analysis

Figure 1: S oftware-de ﬁned Me mory E xtens ion util izing Ul trast ar memo ry drive with Western Digital Memory Extension

Dramatically Scale System Memory

Web application caching in particular requires large amounts of system memory to quickly ingest and analyze vast streams of data from Internet users, transaction events, and IoT devices. High concurrency environments, such as virtualized servers and container-based applications, are prime examples where memory usage can quickly outpace processing capabilities, requiring expensive additional scale-out servers to house the extra memory and virtual machines.

Ultrastar memory drive allows for the transparent expansion of system memory, enabling larger data sets to be used for analytics computations, more data to be stored in front-end web caches, and overall more work that can be accomplished within each server.

Ultrastar

MEMORY DRIVE

DATA S H E ET MEMORY DRIVES

Memory Expansion Example:

Figure 2 : Scalin g system m emor y with Ult rasta r memor y drive; based o n current D RAM spot pricing (Fall 2018).

Baseline

1U, 2-socket server

24x 64GiB DRAM DIMMs

1.5TiB total system memory

Conﬁg-A (1:8 memory extension)

1U, 2-socket server

16x 16GiB DRAM DIMMs (256GiB)

2x 1TiB ME200 devices

2TiB total system memory

Conﬁg-B (1:8 memory extension)

1U, 2-socket server

24x 16GiB DRAM DIMMS (384GiB)

3x 1TiB ME200 devices

3TiB total system memory

Performance Example:

Use-Case Scenarios:

• Conﬁguration A in Figure 2 on the lef t shows that reducing DRAM from 1.5TiB to 256GiB and adding two 1TiB Ultrastar memory drive devices can reduce total system cost by 35% and provide applications with 33% more memory.

• Conﬁguration B in Figure 2 shows that by reducing DRAM from 1.5TiB to 384GiB and adding three 1.5TiB Ultrastar memory drive devices, you can reduce TCO system cost by 10%, while providing applications with 100% more memory.

• Both Conﬁguration-A and Conﬁguration-B in Figure 2 showcase how Ultrastar memory drive enables server consolidation by allowing for the increase in size of data sets that can be handled within a single server, thereby reducing the total number of servers, application licenses, and associated OPEX and CAPEX costs.

• Figure 3 is a performance example using Memcached, typically used in content caching applications. Total system memory as seen by the application in all three instances is 768GiB. The ﬁrst bar represents the full amount of system memory in native DRAM. The second and third bars show the same workload run using less DRAM plus Ultrastar memory drive in a 1:4 memor y extension ratio and 1:8 memory extension ratio. The application is able to maintain 91% performance* and 85% performance* respectively, compared to running in DRAM alone.

Speciﬁcations

Memory Capacity

Recommended Expansion

Recommended Conﬁguration One Ultrastar

Supported Processors Intel

Supported Operating Systems Linux

Hardware Speciﬁcations

Form-Factor / Interface U.2 15mm, PCIe Gen3 AIC HH-HL

Power Requirement (D C +/-5%) 3.3V (aux) and 12V

Operating Power (typical) 25 wat ts active, 9 watt s idle

Operating Temperature (ambient) U.2: 0°C-70°C Ambient, AIC: 0°C-55° C Ambient

Endurance (PBW)

Limited Warranty

Ordering Information

Scale system memory up to 8x DRAM:

Xeon® E5-x6xx v3 or l ater, E7-x8xx v3 or late r

Intel Xeon B ronze, Silver, Gold, or Platinum

RHEL 6.5, 6.6, 6.7, 6.8, 6.9, 7.0, 7.1, 7.2, 7.3, 7.4

Fedora Core ver. 4 to 27; Open SuSe ver. 10 to 11

Ubuntu Server ver. 16.04 to 17.10; Debian 9.5.0

1 TiB mod el: 19.1, 2 TiB mode l: 38.2, 4 T iB model: 78

1TiB, 2TiB, 4TiB

-Up to 24TiB in 2P server s (1U)

-Up to 48T iB in 4P ser vers (2U)

-Up to 96TiB in 8P servers (4U)

memor y drive device per so cket

64-bit OS

SLES 11-SP4, 12, 12-SP1, 12-SP2

3 years

Figure 3: Performance comparison of Memcached based o n interna l testin g. Results may var y based o n system conﬁguration, load, and other factors.

5601 Great Oaks Par kway San Jose, CA 95119, USA

US (Toll- Free): 800.801.4618 International: 408.717.6000

www.wdc.com/dc-me200 www.wdc.com/hgst-support

© 2018 Western D igital Co rporati on or afﬁ liates. All r ights res erved. Pr oduced 11/18 . Western Dig ital, the Wes tern Digi tal logo a nd Ultras tar are reg istered tradem arks or tr ademark s of Western Di gital Co rporati on or its af ﬁliates in the US and/or othe r countri es. The NVMe wo rd mark is a tr ademark of NVM Ex press, Inc . Intel and Xe on are trad emarks of I ntel Corp oration or i ts subsi diaries i n the U.S. and/or oth er countri es. Linux ® is the regi stered tr ademar k of Linus Torva lds in the U.S. and ot her countr ies. All oth er marks are prope rty of th eir respe ctive owne rs. Refere nces in thi s publica tion to Wester n Digital p roducts, prog rams, or se rvices do not imp ly that they w ill be made av ailable i n all countr ies. Produ ct speci ﬁcation s provided a re sample s peciﬁca tions and d o not const itute a warr anty. Actual speciﬁ cations fo r unique pa rt numb ers may var y. Please vi sit our webs ite, www.wdc.c om, for addi tional in formati on on produ ct speciﬁ cations . Picture s shown may vary from actual products.

U.2 Part Number Capacity AIC Part Number Capacity

0TS 1741 1TiB 0TS1912 1TiB

0TS1742 2TiB 0TS1913 2TiB

0TS 1743 4Ti B 0TS1914 4T iB

Memor y capa city is i ndicated by GiB and TiB and ba sed on binary va lues suc h that one g ibibyte (GiB) is

Sugges ted expa nsion of 8x DRAM based on internal perform ance tes ting across a vari ety of industr y

Endurance rating based on 4KiB random write workload.

The war ranty fo r the product wil l expire on t he earlier of (i) t he date when the ﬂas h media has reache d one-

* Result s will var y based on appli cation and work load

equal to 2 indic ated by TB and PB where on e PB equal s is 1015 byte s. Access ible capacity can var y from st ated cap acity due to sof tware, format ting, and other f actors .

standard benchmarks.

erson (1%) of its remai ning life or (ii) th e expira tion of th e time period associated with the p roduct .

bytes and one tebibyte (T iB) is equa l to 1024 GiB (240) bytes. Storage capacity and endurance is

WDS39-EN-US-1118–01