Seagate ST973401SS - Savvio 73.4 GB Hard Drive Uživatelský manuál stáhnout pdf

TEST REPORT

FEBRUARY 2006

OLTP performance comparison: Solid-state

drives vs. hard disk drives

TEST REPORT

JANUARY 2009

KEY FINDINGS

 Six internal SSDs delivered up to

35 percent higher and better

performance on our OLTP tests

than a full 24-disk enclosure of 15K

RPM SAS HDDs.

 The SSD configuration, including

the server, used nearly 35 percent

less power when active and

approximately 42 percent less

power when idle than the HDD

configuration.

 The SSD configuration delivered

higher performance without the

need for an additional RAID

controller or an additional external

drive enclosure.

Executive summary

Intel Corporation (Intel) commissioned Principled Technologies (PT)

to compare performance and power for online transaction

processing (OLTP) of two types of disk drives:

 Intel X25-E Extreme SATA solid-state drives (SSDs)

 standard 15K RPM SAS hard disk drives (HDDs)

We focused on a single usage scenario: that of a user needing

additional server performance and wanting to know whether six

SSDs installed in server drive slots would provide better

performance and lower power consumption than a full external 24-

disk enclosure of HDDs. This is a user who does not need the

additional storage capacity of the HDDs.

We used the DVD Store Version 2 (DS2) test tool. DS2 is an open-

source simulation of an online e-commerce DVD store. Its main

throughput metric is orders per minute, or OPM. We also measured

power consumption during the test and while the systems were idle.

For the HDD tests, we tested a full shelf of 24 Seagate Savvio 15K SAS 73GB hard disk drives in a Newisys

NDS-2240 enclosure attached to a server via an LSI Logic MegaRAID SAS 8888ELP RAID Controller. For the

SSD tests, we tested six 32GB Intel X25-E Extreme SATA solid-state drives that we placed directly in the existing

server drive slots, which connect to the built-in RAID controller. For both tests, we used a server with four six-core

Intel Xeon X7460 processors at 2.66 GHz and 8 GB of RAM. We ran a single instance of DS2 and tested with a

single 20GB database.

In these OLTP tests, six internal SSDs delivered higher and better performance and lower power consumption

than a full 24-disk enclosure of 15K RPM SAS HDDs. As a result, they are the better solution when a user needs

additional drive performance but not

the additional storage of the HDDs.

The internal SSD solution also saves

the cost of additional RAID

controllers, external drive enclosures,

and rack space the HDDs require.

Figure 1 shows the OPM results for

the 24 HDDs and the six SSDs.

These results are the average OPM

performance during 200 seconds of

steady activity and heavy load during

a DS2 test run. We report the median

OPM result of three DS2 test runs.

Six SSDs provided up to 35 percent

better DS2 performance than a full

enclosure of 24 HDDs: 64,973.7 OPM

for the SSDs vs. 48,142.0 OPM for

the HDDs.

Figure 1: DS2 performance results in OPM for the two storage configurations. A

higher OPM score is better.

35%

higher

48,142.01

64,973.66

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

24 Seagate Savvio 15K

SAS hard disk drives

6 Intel X25-E Extreme

SATA solid-state drives

OPMs

DS2 results

Higher results are better

1 2 3 4 5 6 ... 15 16

Shrnutí obsahu

Strany 1

TEST REPORT FEBRUARY 2006 OLTP performance comparison: Solid-state drives vs. hard disk drives TEST REPORT JANUARY 2009 KEY FINDINGS  Si

Strany 2 - Workload

10 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives --added to force index seek WITH (FORCESE

Strany 3 - Test results

11 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives USE [master] GO IF EXISTS (SELECT name FR

Strany 4 - Test methodology

12 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives CREATE LOGIN [ds2user] WITH PASSWORD=N&apos

Strany 5 - Setting up the storage disks

13 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives Appendix A: Storage configuration Figure

Strany 6

14 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives Appendix B: Test environment We used one se

Strany 7

15 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives Intel Xeon processor X7460-based server RP

Strany 8 - Generating the datasets

16 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives About Principled Technologies We provide in

Strany 9

2 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives We used power analyzers to log the power con

Strany 10

3 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives DS2 models an online DVD store. Virtual cus

Strany 11

4 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives Test methodology For the HDD tests, we insta

Strany 12 - Reporting results

5 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives Setting up the storage disks Before we ran t

Strany 13

6 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives Connecting the Extech Power Analyzer/Datalog

Strany 14 - Appendix B: Test environment

7 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives 36. Click Next. 37. Click Next. 38. Click In

Strany 15

8 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives Bytes/sec, Physical Disk(1 E:)\Disk Writes/s

Strany 16

9 Principled Technologies, Inc.: OLTP performance comparison: Solid-state drives vs. hard disk drives  ds2_create_orders_20gb.sh  ds2_create_

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