Lenovo x3550 M4 Panduan Produk - Halaman 32

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The ServeRAID M5225 SAS/SATA Controller has the following specifications:

Eight external 12 Gbps SAS/SATA ports

Supports 12, 6, and 3 Gbps SAS and 6 and 3 Gbps SATA data transfer rates

Two external x4 mini-SAS HD connectors (SFF-8644)

Supports 2 GB flash-backed cache (standard)

Supports RAID levels 0, 1, 5, 10, and 50 (standard)

Supports RAID 6 and 60 with the optional M5200 Series RAID 6 Upgrade

Supports optional M5200 Series Performance Accelerator and SSD Caching upgrades

PCIe x8 Gen 3 host interface

Based on the LSI SAS3108 12 Gbps ROC controller

Supports connectivity to the EXP2512 and EXP2524 storage expansion enclosures

For more information, see the following Lenovo Press Product Guides:

ServeRAID M5120 SAS/SATA Controller

http://lenovopress.com/tips0858

ServeRAID M5225-2GB SAS/SATA Controller

http://lenovopress.com/tips1258

The controllers support connectivity to the external expansion enclosures listed in the following table. Up to nine

expansion enclosures can be daisy-chained per one external controller port. For better performance, distribute

expansion enclosures evenly across both ports of a controller.

Table 23. External expansion enclosures

Part number

Description

610012X

EXP2512 Storage Enclosure

610024X

EXP2524 Storage Enclosure

The external SAS cables listed in the following table support connectivity between external expansion

enclosures and the controller.

Table 24. External SAS cables for external storage expansion enclosures

Part number

Description

ServeRAID M5120 - Server to Expansion enclosure connectivity (Mini-SAS x4 to Mini-SAS x4)

00WC017

1 m SAS Cable

00WC018

3 m SAS Cable

ServeRAID M5225 - Server to Expansion enclosure connectivity (Mini-SAS HD x4 to Mini-SAS x4)

00Y2459

0.6m SAS Cable (mSAS HD to mSAS)

00Y2461

1.5m SAS Cable (mSAS HD to mSAS)

00Y2463

3m SAS Cable (mSAS HD to mSAS)

Expansion enclosure to Expansion enclosure connectivity (Mini-SAS x4 to Mini-SAS x4)

00WC017

1 m SAS Cable

00WC018

3 m SAS Cable

System x3550 M4 (E5-2600 v2) (withdrawn product)

Maximum quantity supported per

one controller

Maximum quantity supported per

one enclosure