Ibm SYSTEM STORAGE DS5000 Manuale Utente Scaricare il pdf (Pagina 7)

Digital Media Storage Solution Installation Guide 7

SAN Architecture must meet RPQ criteria

• Limit number of paths for Xsan/StorNext clients to four

• This is to limit both complexity and the amount of time required to initialize clients

on the SAN

• Redundant Meshed Fibre Channel SAN (cross-connected)

• RDAC MPP supports this configuration

• Some IBM documentation may seem to preclude this, but those documents are

based on an old non-“mpp” version of RDAC

• Limits cause for failover to Controller failure

• Specific Firmware, software, and Operating System Levels

IBM Storage

• DS5100/DS5300

• DS5020

• DS4700

• DS3400

• Future

DS3400

DS4700

DS5020

DS5100

base

performance

DS5300

enhanced

performance

Burst I/O rate

cache reads

(IOPS)

110,000

120,000

200,000

650,000

700,000

Sustained I/O rate

disk reads

21,000

39,250

50,000

76,000

170,000

Sustained I/O rate

disk writes

4,500

9,350

9,500

20,000

38,000

Drives

48 SAS/SATA

112 FC/SATA

112

FC/SATA/FDE

256

FC/SATA/FDE

448

FC/SATA/FDE

/SSD*

(480) SATA*

Burst throughput

cache read

1,600

1,550MB/s

3,700 MB/s

1,600MB/s

6,400 MB/s

Sustained

throughput

disk read

925

980MB/s

1,600 MB/s

1,600MB/s

6,400 MB/s

Sustained

throughput

disk write

720

850 MB/s

1,400 MB/s

1,300 MB/s

5,300 MB/s

Host ports

1 2 3 4 5 6 7 8 9 10 11 12 ... 37 38

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