April 13, 2010 Mr. Mike Harrison Brocade Communications Systems, Inc. San Jose, CA 95110 Subject: Amendment Number 6 to SOW#7 of the IBM/Brocade Goods Agreement ROC-P-68

Exhibit 10.6

April 13, 2010

Mr. Xxxx Xxxxxxxx

Brocade Communications Systems, Inc.

0000 Xxxxxxxxxx Xxxxx

Xxx Xxxx, XX 00000

Subject: Amendment Number 6 to SOW#7 of the IBM/Brocade Goods Agreement ROC-P-68

This letter (the “Amendment”) serves as Amendment Number 6 to SOW#7, including all amendments thereto (“SOW#7”) of the Goods Agreement ROC-P-68 (the “Agreement”), which the parties hereto do mutually agree to amend as follows

1. Attachment A, “Pricing”, is hereby deleted in its entirety and replaced with Attachment A, “Pricing”, attached hereto.

2. Attachment F-2, “Branding, Description of Licensed Work, and Milestone Schedules for DCFM” is hereby deleted in its entirety and replaced with Attachment F-2, “Branding, Description of Licensed Work, and Milestone Schedules for DCFM”, attached hereto.

The effective date of this Amendment shall be the date on the top of this Amendment (the “Effective Date”).

The parties acknowledge that they have read this Amendment, understand it, and agree to be bound by its terms and conditions. All capitalized terms not defined herein shall have the meaning set forth in the Goods Agreement or the SOW #7. All other terms and conditions of the Goods Agreement and SOW#7 that are unaffected by the revisions set forth in this Amendment shall remain in full force and effect. Further, the parties agree that this Amendment and the Goods Agreement and SOW#7 are the complete and exclusive statement of the agreement between the parties, superseding all proposals or other prior agreement, oral or written, and all other communications between the parties relating to this subject.

Accepted and Agreed To:						Accepted and Agreed To:
International Business Machines Corporation						Brocade Communications Systems, Inc.
By:		/s/ Xxxxxxxx X. Xxxxxx                        4/15/10				By:		/s/ Xxxxxxx Xxxxxxx
Authorized Signature                                Date						Authorized Signature                                                         Date
Xxxxxxxx X. Xxxxxx						Xxxxxxx Xxxxxxx
Type or Print Name						Type or Print Name
GCM – Storage OEM Procurement						VP, OEM Sales
Title & Organization						Title & Organization
Address:						Address:        0000 Xxxxxxxxxx Xxxxx
						Xxx Xxxx, XX 00000
						Accepted and Agreed To:
						Brocade Communications Switzerland SarL
						By:		/s/ U. Plechschmidt
						Ulrich Plechschmidt
						Type or Print Name
						Vice President EMEA
						Title & Organization                        19-April-2010

Brocade Confidential

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

Attachment A

Pricing

Table 1 - VFM ENTERPRISE EDITION PRICING

BROCADE

IBM p/n

IBM VFM Enterprise Edition

Brocade p/n

IBM p/n

US Feature Code

LA/EMEA Feature Code

AP/ Canada Feature Code

Feature Description

UNIT PRICE

IBM Machine Type / Model: [**]

UNIT PRICE [**]

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Brocade Confidential Page 2 of 10

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

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IBM Machine Type / Model: [**]     VFM EE    — Registration for 1st-yr AND 1-yr Renewal (Registration and Renewal)

UNIT PRICE

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IBM Machine Type / Model: [**]         VFM EE     — If M&S lapses, customer uses this feature (Re-instatement)

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Brocade Confidential Page 3 of 10

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

IBM Machine Type / Model: [**]         VFM EE     — 3-yr M&S ordered with new product (Registration)

UNIT PRICE

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IBM Machine Type / Model:                 VFM EE     — Additional M&S (Renewal0+D118)

UNIT PRICE

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IBM Machine Type / Model: [**]           VFM EE     — If M&S lapses, customer uses this feature (Re-instatement)

UNIT PRICE

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Brocade Confidential Page 4 of 10

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

Table 2 - VFM MIGRATION EDITION PRICING

BROCADE

IBM p/n

IBM VFM Migration Edition

Brocade p/n

IBM p/n

US Feature Code

LA/EMEA Feature Code

AP/ Canada Feature Code

Feature Description

UNIT PRICE

IBM Machine Type/Model: [**]

UNIT PRICE [**]

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IBM Machine Type / Model: [**]         VFM ME     — Registration for 1st-yr AND 1-yr Renewal (Registration and Renewal)

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Brocade Confidential Page 5 of 10

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

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IBM Machine Type / Model: [**]        VFM ME    — If M&S lapses, customer uses this feature (Re-instatement)

UNIT PRICE

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IBM Machine Type / Model: [**]        VFM ME    — 3-yr M&S ordered with new product (Registration)

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Brocade Confidential Page 6 of 10

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

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IBM Machine Type / Model: [**]         VFM ME    — Additional M&S (Renewal)

UNIT PRICE

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IBM Machine Type / Model: [**]        VFM ME    — If M&S lapses, customer uses this feature (Re-instatement)

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Brocade Confidential Page 7 of 10

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

Table 3 – IBM SYSTEM STORAGE DATA CENTER FABRIC MANAGER V10.4 PRICING

BROCADE

IBM

IBM (End-Customer P/N)

IBM SYSTEM STORAGE DATA CENTER FABRIC MANAGER

Brocade p/n

IBM Hub Stock P/N

US Feature Code

LA/EMEA Feature Code

AP/ Canada Feature Code

Feature Description

UNIT PRICE

IBM Machine Type / Model: [**]

IBM System Storage Data Center Fabric Manager V10.0

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IBM Machine Type / Model: [**]

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UNIT PRICE

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IBM Machine Type / Model: [**]

IBM System Storage Data Center Fabric Manager 1 Yr After License

UNIT PRICE

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UNIT PRICE

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IBM Machine Type / Model: 5639-DC4

IBM System Storage Data Center Fabric Manager 3 Yr Renewal

UNIT PRICE

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IBM Machine Type / Model: 5639-DC5

IBM System Storage Data Center Fabric Manager 3 Yr After License

UNIT PRICE

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[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Brocade Confidential Page 8 of 10

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

Attachment F-2

Branding, Description of Licensed Work, and Milestone Schedules

For DCFM

1.0 Buyer Branded Version of Supplier’s OEM Software Product

The Licensed Work will be comprised of a Buyer-branded version of Supplier’s DCFM software product. The Buyer branded version will be called “IBM System Storage Data Center Fabric Manager.” Supplier consents to the use by Buyer the name “IBM System Storage Data Center Fabric Manager”, “Data Center Fabric Manager”, “IBM DCFM”, and “DCFM”. The Licensed Work will be provided by Supplier to Buyer in Object Code format.

2.0 Description of Licensed Work

Code Name		Version		Description		Documentation		Format		Delivery Requirements
DCFM		10.4.x		IBM System Storage Data Center Fabric Manager		Online		Object Code		CD, License key documentation

2.1 Product/Operating Systems Supported and System Requirements:

Following are the operating systems supported by DCFM.

OS		Versions
Windows		2003 Server, XP, Vista, Windows Server 2008
Linux		SuSE Linux XX00, XxxXxx XX0, XxxXxx ES4
VMWare		ESX Server 3 / 3.5 (Same Guest OS as above)
Solaris		Solaris 10

System requirements

Server/Client		DCFM Enterprise Small (1 to 2000 ports or 1 to 20 domains)		DCFM Enterprise Medium (2001 to 5000 ports or 21 to 60 domains)		DCFM Enterprise Large (5001 to 9000 ports or 61 to 120 domains)
Server + 1 local client		3GB		4GB		4Gb
Remote client only		1GB		2GB		2GB

CPU requirements for Windows and Linux

Server/Client		DCFM Enterprise Small		DCFM Enterprise Medium		DCFM Enterprise Large
Server + 1 local client		Intel Core2 duo 2GHz or equivalent		Intel Dual CPU Core2 duo 2.4 GHz or equivalent		Intel Dual CPU Core2 duo 2.4 GHz or equivalent
Remote client only		Intel Core2 duo 2GHz or equivalent		Intel Core2 duo 2GHz or equivalent		Intel Core2 duo 2GHz or equivalent

[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

Brocade Confidential Page 9 of 10

Base Agreement #ROC-P-68

SOW #7 (Contract Number 4907015087.0)

Amendment #6

CPU requirements for Solaris

Server/Client		DCFM Enterprise Small		DCFM Enterprise Medium		DCFM Enterprise Large
Server + 1 local client		Xxx XXXXX Xxxxxxxxxx X0xxx (X0000, T5140, T5220, T5240, T5440) Processor: 4 Core 1.2 GHz UltraSPARC T2 or T2 Plus or equivalent		Sun XXXXX Xxxxxxxxxx X0xxx (X0000, T5140, T5220, T5240, T5440) Processor: 4/6/8 Core 1.4 GHz UltraSPARC T2 or T2 Plus or equivalent		Sun XXXXX Xxxxxxxxxx X0xxx (X0000, T5140, T5220, T5240, T5440) Processor: 4/6/8 Core 1.4 GHz UltraSPARC T2 or T2 Plus or equivalent
Remote client only		Sun Fire/Sun SPARC Enterprise T1000/T2000 Processor: 4 Core 1.0 GHz UltraSPARC T1 or equivalent		Sun Fire/Sun SPARC Enterprise T1000/T2000 Processor: 4 Core 1.0 GHz UltraSPARC T1 or equivalent		Sun Fire/Sun SPARC Enterprise T1000/T2000 Processor: 4 Core 1.0 GHz UltraSPARC T1 or equivalent

2.2 Documentation : Supplier will provide Buyer with IBM branded customer documentation.

a) Internal (standard Supplier documentation)

b) External (on-line documentation)

c) No other related written materials

2.3 Other Materials:

a) Quality Plan: Supplier will provide Buyer with quality plan upon Buyer’s request

b) Test Results: Supplier will provide Buyer with available test results upon Buyer’s request

c) Test Cases: Supplier will provide Buyer with available test cases upon Buyer’s request.

d) Maintenance and Support Reports (including information required and format)

e) Promotional Materials: Buyer and Supplier will mutually determine what promotional materials are needed for the Licensed Works.

f) Education/Training material: Buyer and Supplier will mutually determine what Education and Training materials are needed for the Licensed Works.

2.4 Code deposited on CD media and shipped to Buyer as directed on Buyer’s purchase order.

3. Identification of Tools

No tools are provided for the Licensed Works.

4. Schedule

The relevant milestones, completion dates, and terms associated with DCFM software.

Milestone		Completion Date
Delivery of the Licensed Work which substantially complies with its Specifications		[**]
Delivery of the other Deliverables (other than the Licensed Work, Tools, etc.)		[**]
Successful completion of Buyer’s testing of the Licensed Work		[**]
Receipt of the completed Certificate of Originality for the Licensed Work		[**]
Other		[**]

[**] Certain information on this page has been omitted and filed separately with the Securities and Exchange Commission. Confidential treatment has been requested with respect to the omitted portions.

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