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IBM ServeRAID M5025 SAS/SATA Contr

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IBM ServeRAID M5025 SAS/SATA Contr  (46M0830)

IBM ServeRAID M5025 SAS/SATA Contr

  • Ports/Connectors SAS, SATA
  • External Ports Yes
  • Host Interface PCI Express x8
  • Internal Ports No
  • RAID Yes

ServeRAID M5025 SAS/SATA Controller for IBM System x

The ServeRAID M5025 SAS/SATA Controller for IBM System x is the next-generation 6 Gbps SAS 2.0 external RAID controller. This adapter has two external mini-SAS connectors to control up to 240 devices and supports global and dedicated hot-spare drives. The ServeRAID M5025 controller delivers a full 6-Gbps SAS 2.0 RAID solution with the performance advantages of an extended cache and a standard battery backup unit. With the attachment of the ServeRAID M5000 Advanced Feature Key, the ServeRAID M5025 offers the option of RAID 6, RAID 60 and SED Encryption Key Management.

The ServeRAID M5025 includes the following items:

  • One ServeRAID M5025 adapter card with full-height (3U) bracket
  • Low-profile (2U) bracket
  • ServeRAID M5000 battery (attached)
  • Battery Remote Mount Cable
  • Documentation CD
  • The IBM Important Notices Document

The ServeRAID M5025 adapter card has the following specifications:

  • Eight external 6 Gbps SAS 2.0 ports implemented via two four-lane (x4) connectors
  • Two mini-SAS external connectors (SFF-8088)
  • 6 Gbps throughput per SAS port
  • 800 MHz PowerPC processor with LSI SAS2108 6 Gbps RAID on Chip (ROC) controller
  • PCI Express 2.0 x8 host interface
  • 512 MB onboard data cache (DDR2 running at 800 MHz)
  • Intelligent lithium polymer battery backup unit standard with up to 48 hours of data retention
  • Supports RAID levels 0, 1, 5, 10, and 50 (RAID 6 and 60 support with the optional M5000 Advanced Feature Key)
  • Connects to
  • Up to 240 SAS or SATA drives
  • Up to 9 daisy-chained enclosures per port
  • SAS and SATA drives are supported, but the mixing of SAS and SATA in the same RAID array is not supported
  • Supports up to 64 logical volumes
  • Supports LUN sizes up to 64 TB
  • Configurable stripe size up to 1 MB
  • Compliant with Disk Data Format (DDF) configuration on disk (COD)
  • S.M.A.R.T. support

The key difference between the ServeRAID M5025 and M5015 RAID controllers is that the M5025 has two external SAS 2.0 x4 connectors and the M5015 has two internal SAS 2.0 x4 connectors.

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