Compaq AlphaServer ES45 2B Manual de usuario descargar pdf (Pagina 8)

Step 2 - Additional CPU Modules - Optional

Step 2 - Additional CPU Modules - OptionalStep 2 - Additional CPU Modules - Optional

Step 2 - Additional CPU Modules - Optional

One CPU included, three additional CPUs are supported

SMP upgrade, includes one 68/1000-MHz CPU with 8-MB cache and Tru64 UNIX SMP license

KN610-DB

SMP upgrade, includes one 68/1000-MHz CPU with 8-MB cache and OpenVMS SMP license

KN610-DC

SMP upgrade, includes one 68/1250-MHz CPU with 16-MB cache and Tru64 UNIX SMP license

KN610-EB

SMP upgrade, includes one 68/1250-MHz CPU with 16-MB cache and OpenVMS SMP license

KN610-EC

NOTE:

NOTE: NOTE:

NOTE:

Minimum firmware for 1.25-GHz systems is V6.2-8, minimum SROM firmware is V2.22-F.

Firmware files are available at:

http://ftp.digital.com/pub/Digital/Alpha/firmware/interim/es45/v6.2C/

NOTE:

NOTE: NOTE:

NOTE:

Existing AlphaServer ES45 1-GHz Model 2 (xx-68DAA-xx) customers who upgrade to 1.25-

GHz CPUs, should continue to follow Model 2 configuration guidelines. The following options are

required: H7906-A9 power supply and MS620-AA, MS620-BA, and MS620-CA memory options. Do

not order 3X-H7514-AA power supplies or MS5620-DB memory options.

Step 3 - Memory - Optional

Step 3 - Memory - OptionalStep 3 - Memory - Optional

Step 3 - Memory - Optional

Base systems do not include memory; select a minimum of 1-GB memory; this is a mandatory selection. All other systems include one memory

option.

Maximum four memory options (total of 16 DIMMs) for Model 1B or Model 1 (one per array)

Maximum eight memory options (total of 32 DIMMs) for Models 2B or Model 2, and Model 3B or Model 3 (two per array)

AlphaServer ES45 system includes two memory buses

AlphaServer ES45 system includes two arrays per bus

For Model 2B or Model 2 and Model 3B or Model 3, memory options within an array must be identical

512-MB memory option (4 x 128-MB DIMMs)

MS620-AA

1-GB memory option (4 x 256-MB DIMMs)

MS620-BA

2-GB memory option (4 x 512-MB DIMMs)

MS620-CA

4-GB memory option (4 x 1024-MB DIMMs)

MS620-DB

NOTE:

NOTE: NOTE:

NOTE:

Do not order MS620-DB memory option for installation in ES45 1-GHz Model 2 (xx-68DAA-xx)

system. MS620-DB memory option can only be installed in (xx-6xDBA-xx) and (xx-6xEBA-xx) systems.

Memory performance considerations:

The AlphaServer ES45 system has two memory buses. When two or more memory options are installed, both buses are utilized, enhancing system

performance

The AlphaServer ES45 system has two arrays per bus. Interleaved operations reduce the average latency and increase the memory throughput. When

all four arrays are populated with the same amount of memory, read-write operations are four-way interleaved, enhancing system performance.

The following examples illustrate different ways of configuring a 4-GB system. Case C yields the best performance and is the recommended method for

configuring memory on an AlphaServer ES45 system.

ES45 System

ES45 SystemES45 System

ES45 System

(one memory option included)

Add-on Memory Options

Add-on Memory OptionsAdd-on Memory Options

Add-on Memory Options

Total Memory

Total MemoryTotal Memory

Total Memory

Total DIMMs

Total DIMMsTotal DIMMs

Total DIMMs

Performance

PerformancePerformance

Performance

Case A

Case ACase A

Case A

- DA-68DBA-DA

(MS620-DB)

None

4-GB

Good

Case B

Case BCase B

Case B

- DA-68DBA-CA

(MS620-CA)

MS620-CA

4-GB

Better

Case C

Case CCase C

Case C

- DA-68DBA-BA

(MS620-BA)

MS620-BA + MS620-BA +

MS620-BA

4-GB

Best *

NOTE:

NOTE: NOTE:

NOTE:

* = Operating system and application dependent. Up to an 18% performance enhancement has been measured in Case C over Case A.

QuickSpecs

HP AlphaServer ES45

HP AlphaServer ES45HP AlphaServer ES45

HP AlphaServer ES45

Systems

DA - 10994 North America — Version 41 — September 10, 2003

Page 8

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QuickSpecs 1

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Compaq AlphaServer ES45 2B Manual de usuario Pagina 8

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