Offer faster access to critical data and achieve greater inline data reduction with a Dell EMC PowerStore 7000T storage solution

Use less storage
capacity for the
same amount
of data
36% less physical
storage used*
Handle more
simulated
transactional
database work
33% more
max IOPS during an
OLTP-like workload*
Retrieve
data faster
21% more max
IOPS with a
read‑heavy
I/O profile*
Offer faster access to critical data and
achieve greater inline data reduction
with a Dell EMC PowerStore 7000T
storage solution
Compared to a storage solution from another
vendor, the PowerStore 7000T offered a better inline
data reduction ratio and better performance during
simulated OLTP and other I/O workloads
As IDC recently reported, enterprise data volumes will grow by an average
of more than 42 percent from 2020 to 2022.1
Organizations depend on
users accessing data quickly, but the growth of those volumes could slow
user access. A Dell EMC PowerStore 7000T storage solution could help
enterprise-grade organizations limit data center sprawl, meet transactional
database performance milestones, and satisfy user demands.
At Principled Technologies, we ran multiple tests on two different all-
NVMe®
storage solutions with 48 TB of useable capacity: a cluster of Dell
EMC PowerStore 7000T arrays and a solution based on an array from
another company we’ll call Vendor B. Compared to the Vendor B solution,
the PowerStore 7000T solution needed less rack space, used less storage
capacity to store the same amount of data, and handled more input/output
operations per second (IOPS) in a simulated database online transaction
processing (OLTP) workload. In addition, the PowerStore 7000T solution
handled more IOPS, processed more MB per second, and delivered shorter
response times than the Vendor B solution when running three different I/O
profiles. With a Dell EMC PowerStore 7000T storage solution, enterprises
can maximize storage capacity and increase storage performance while
maintaining fast response times.
Dell EMC™
PowerStore 7000T
*
compared to Vendor B solution
Offer faster access to critical data and achieve greater inline data reduction with a Dell EMC PowerStore 7000T storage solution November 2021
A Principled Technologies report: Hands-on testing. Real-world results.

How we tested
During our testing, both the Dell EMC
PowerStore 7000T solution and the Vendor B
solution were located in an offsite data center
lab. We performed all testing remotely after
traveling to the lab to inspect the server clients,
the network implementation, and the storage
arrays. We had full control over and unfettered
access to the testbeds.
We began our test setup by creating multiple
1TB volumes (also known as logical unit
numbers or LUNs) on each solution and
mapped them to four VMware®
ESXi™
servers
connected to the arrays. We then added
multiple raw device mapping (RDM) disks to
Linux®
-based virtual machines on both test
beds. We tuned the hosts according to each
storage vendor’s best practices.
We tested each solution in three phases and
ran each test separately three times. We use the
median results for each phase for this report.
Rack space
Dell EMC PowerStore 7000T solution Vendor B solution
Lower is better
33%
less space
Figure 1: The amount of rack space each storage solution occupied: 4U for the Dell EMC solution and 6U for the
Vendor B solution. Less is better. Source: Principled Technologies.
Dell EMC
PowerStore 7000T
About the Dell EMC PowerStore 7000T array
The PowerStore 7000T presents an all-flash NVMe storage
solution for enterprise organizations. The array supports
up to 96 drives, including 25 2.5-inch NVMe drive slots, for
up to 898.56 TB of raw storage capacity.2
The Intel®
Xeon®
Scalable processor-powered array takes up just 2U of rack
space, enabling enterprises to save on data center costs
by delaying the need to expand to new rooms or even
buildings. Organizations can scale up and out by clustering
PowerStore 7000T arrays together and augmenting
storage performance and capacity without increasing the
management workload. Our PowerStore solution included
two 2U arrays for a total 4U, just two-thirds of the 6U
Vendor B solution.
In 2020, a PT study found that PowerStore 9000T and 9000X
arrays delivered more IOPS for an OLTP-like workload,
stored data more efficiently, and made it easier to provision
new storage compared to an array from another vendor.3
To learn more about the PowerStore T series of arrays,
visit https://www.delltechnologies.com/en-us/storage/
powerstore-storage-appliance/powerstore-t-series.htm
Offer faster access to critical data and achieve greater inline data reduction with a Dell EMC PowerStore 7000T storage solution November 2021 | 2

Phase 1: Data reduction. We started the test with each solution containing empty volumes. Using Vdbench, we
simulated a data migration into the solutions; the 16TB dataset, which Vdbench created, had a sequential write
input/output (I/O) profile using 128KB blocks, 2:1 compression and 2:1 deduplication ratios, and a single thread
per volume. We collected capacity and data reduction information prior to and immediately after each test
iteration to assess the inline data reduction capabilities of both solutions.
Phase 2: Simulated OLTP performance. We used Vdbench to allocate data to all logical space on the 64 1TB
volumes using a sequential write I/O workload, a 2:1 compression ratio, and a 1:1 deduplication ratio. We
then performed a long, fixed-rate OLTP simulation to condition the database. Finally, we ran a simulated OLTP
workload with multiple I/O blocks to collect IOPS and latency data from the two storage solutions.
Phase 3: Four I/O profiles. We used Vdbench to assess the number of I/O operations each solution could handle
using a mix of read and write I/O profiles. When we loaded the 64 1TB volumes, we used 2:1 compression
and 2:1 deduplication ratios. We collected data on IOPS, latency, and data throughput to determine
best performance.
We unmapped RDM disks and deleted volumes between each testing phase. After deleting the volumes, we let
the storage solutions sit idle so they could reclaim space, and then we restarted the process of creating volumes
and mapping RDM disks. Testing phases 2 and 3 used the same number of volumes and RDM disks.

Store data more efficiently
Efficient deduplication and compression free up space on storage solutions, allowing you to store more data
on demand and potentially delay the need to purchase new hardware. The more usable storage capacity your
storage solution offers, the more you get out of your investment.
Using its data reduction technology, which combines inline compression and inline deduplication,4
the
PowerStore 7000T solution needed 3.9 TB of physical space to store 16 TB of data. The Vendor B solution also
used its data reduction technology but needed 6.15 TB of physical space to store the same 16 TB of data. The
data reduction ratio for the Dell EMC solution was 4.2:1; the Vendor B solution offered a data reduction ratio of
2.6:1. Figure 2 shows the results from our data reduction testing.
Process more database transactions for OLTP workloads
If your company relies on OLTP databases for critical operations—as do many retail, financial, and customer
service organizations—your storage solution must be able to keep up with the demands of high-performing
databases quickly. Fast OLTP databases can help your business grow, while slowdowns in those databases risk
frustrating users, causing delays, and affecting your business.
Running a simulated 32-thread-per-volume OLTP workload, the Dell EMC PowerStore 7000T solution achieved
a max IOPS of 534,092 (133K more than the Vendor B solution achieved). Figure 3 shows the IOPS results from
that workload.
Storage capacity needed for 16 TB of data
Dell EMC PowerStore 7000T solution
[Data reduction ratio 4.2:1]
[Data reduction ratio 2.6:1]
Vendor B solution
3.90 TB 16 TB
16 TB
6.15 TB
Lower is better
36%
better data
reduction
OLTP claim
Max IOPS with simulated 32-thread OLTP workload
Vendor B solution
534,092 IOPS
400,859 IOPS
Higher is better
33%
more
IOPS
Figure 2: Data reduction results after the Dell EMC PowerStore 7000T and Vendor B storage solutions stored 16 TB of
data. Lower is better. Source: Principled Technologies.
Figure 3: IOPS results for the Dell EMC PowerStore 7000T and Vendor B storage array solutions running our simulated
OLTP 32-thread workload. Source: Principled Technologies.

Support more storage I/O, deliver shorter response times, and
process more data at a higher throughput
Support more IOPS
To determine each solution’s ability to handle a high volume of I/O requests, we ran two Vdbench workloads on
the Dell EMC PowerStore 7000T solution and the solution from Vendor B:
• An 8KB random 100 percent read workload at 32 threads, which shows how quickly each solution could
retrieve information
• A 4KB random 100 percent write workload at 32 threads, which indicates how quickly the solutions could
commit or save data
The Dell EMC PowerStore 7000T solution outperformed the Vendor B solution on both tests, delivering 21
percent and 37 percent more IOPS on the tests, respectively (see Figures 4 and 5). On the 8KB random read
workload, the Dell EMC PowerStore 7000T solution supported 1,231,617 IOPS (the largest amount achieved
in these tests). If you look at these two tests together, the Dell EMC PowerStore 7000T solution outperformed
the Vendor B solution on two different workloads and could better support periods of heavy activity than the
Vendor B solution.
Figure 4: Number of IOPS supported by each solution
while running an 8KB 32-thread random read workload
on the Vdbench benchmark. Higher is better. Source:
Principled Technologies.
while running a 4KB 32-thread random write workload
on the Vdbench benchmark. Higher is better. Source:
Principled Technologies.
About Vdbench
Vdbench is an open-source benchmarking tool that generates I/O loads to stress storage arrays and simulate real-world
workloads. It shows the maximum rate of IOPS a solution can handle along with the latency and bandwidth it delivers
while processing those IOPS. For details on the workloads we configured and used in our testing, see the science
behind the report.
Max IOPS with 8KB 32-thread
random read workload
Vendor B solution
1,231,617 IOPS
1,012,745 IOPS
Higher is better
21%
more
IOPS
Max IOPS with 4KB 32-thread
random write workload
Vendor B solution
800,478 IOPS
582,119 IOPS
Higher is better
37%
more
IOPS

Deliver shorter response times
While running a 32KB 70 percent read workload at four threads, we also measured each storage solution’s
response time. The Dell EMC PowerStore 7000T solution reported submillisecond latencies, but the Vendor B
solution did not (see Figure 6). Compared to the Vendor B solution, the PowerStore 7000T solution supported
30 percent more IOPS (see Figure 7) at a 23 percent lower latency. These results indicate that the Dell EMC
PowerStore 7000T could process heavy user request loads while still delivering fast response times, potentially
improving application response times.
Max throughput with 256KB 32-
thread sequential read workload
Vendor B solution
48,850 MB/s
9,285 MB/s
Higher is better
5.2X
more
MB/s
Figure 6: Response time (milliseconds) delivered
during the 32KB 70 percent read workload. Lower is
better. Source: Principled Technologies.
Latency with 32KB
4-thread 70% read workload
Vendor B solution
0.825 ms
1.078 ms
Lower is better
23%
lower
latency
during the 32KB 70 percent read workload. Higher is
Figure 8: Amount of bandwidth (MB/s) while running a
Vdbench workload with 256KB blocks of data. Higher is
Process more data at a higher throughput
To test how much data each solution could transfer per
second, we ran another Vdbench workload with large 256KB
blocks of data in a sequential 100 percent read I/O profile.
The Dell EMC PowerStore 7000T solution outperformed the
Vendor B solution, supporting up to 5.2 times the bandwidth
by processing up to 48,850 MB/s (see Figure 8). A storage
solution with high bandwidth capabilities helps process more
data for large requests such as streaming video or in big
data applications.
IOPS with 32KB 4-thread
70% read workload
Vendor B solution
308,984 IOPS
236,599 IOPS
Higher is better
30%
more
IOPS

Conclusion
Storing critical data for continued use and growth can require significant storage capacity. Enterprise-grade
storage solutions can meet your raw capacity needs, but they offer varied data reduction capabilities and levels
of performance. In a head-to-head comparison against a similar all-NVMe solution from Vendor B that required
more rack space, the Dell EMC PowerStore 7000T solution offered better inline data reduction capabilities. It
also supported better simulated OLTP database performance than the Vendor B solution (up to 33 percent more
IOPS), and delivered better performance in IOPS, throughput, and latency for four other I/O profiles. Choosing
the Dell EMC solution could allow you to make better use of your storage, better support ecommerce and similar
transactional database workloads, and help control data center sprawl.
1 Stephanie Condon, “Enterprises are collecting more data, but do they know what to do with it?” accessed September 23,
2021, https://www.zdnet.com/article/enterprises-are-collecting-more-data-but-do-they-know-what-to-do-with-it/.
2 Dell Technologies, Dell EMC PowerStore Storage Family, accessed September 23, 2021, https://www.delltechnologies.
com/en-us/storage/powerstore-storage-appliance.htm#tab0=0&pdf-overlay=//www.delltechnologies.com/asset/en-us/
products/storage/technical-support/h18143-dell-emc-powerstore-family-spec-sheet.pdf
3 Principled Technologies, “Enable greater data reduction, storage performance, and manageability with Dell EMC Power-
Store storage arrays,” accessed September 23, 2021,
https://www.principledtechnologies.com/Dell/PowerStore-9000T-9000X-storage-arrays-0520.pdf.
4 Dell Technologies, “Dell EMC PowerStore: Data Efficiencies,” accessed September 30, 2021, https://www.delltechnolo-
gies.com/asset/en-us/products/storage/industry-market/h18151-dell-emc-powerstore-data-efficiencies.pdf.
Dell EMC PowerStore 7000T
Principled Technologies is a registered trademark of Principled Technologies, Inc.
All other product names are the trademarks of their respective owners.
For additional information, review the science behind this report.
Principled
Technologies®
Facts matter.®
Principled
Technologies®
Facts matter.®
This project was commissioned by Dell Technologies.
Read the science behind this report at http://facts.pt/yon14zf

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