Acer SmartRAID V Uživatelský manuál stáhnout pdf (Strana 29)

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About Your New SmartRAID V Controller

SmartRAID V Decade and Century Features

SmartRAID V Decade and Century controllers are designed to provide

high performance solutions for workstations and servers in environments

where cost is a factor.

The following Decade and Century controllers are available:

PM1554U2 / PM2554U2 / PM2654U2

Type

Ultra2 Wide

Host Bus

32-bit PCI

Host/Internal Transfer Rate

132 MB/sec

I/O Transfer Rate

80 MB/sec

1. Maximum

transfer

rate per channel

The Decade (PM1554U2 ) controller features include:

• Onboard I/O processor (31 MIPs)

• Hardware RAID 0, 1, 5, 0+1 and 0+5

• Firmware XOR

• 4MB of onboard cache RAM

• Intelligent Hot Spare capability

• Conforms to revision 2.2 of the PCI specification

NOTE If an RA4050 module is attached to a PM1554U2 controller, the

controller’s onboard cache is disabled and only the cache on

the RA4050 cache is used (64MB maximum). The RA4050 also

adds hardware XOR capability which enhances RAID 5

performance.

Century controller features include:

• Onboard I/O processor

PM2554U2 (31 MIPs)

PM2654U2-R (40 MIPs)

• Hardware RAID 0, 1 and 0+1

• RAID 5 and 0+5 when using an RA4050 RAID Accelerator

• Up to 64MB of cache when using an RA4050 RAID Accelerator

• Intelligent Hot Spare capability

• Conforms to revision 2.2 of the PCI specification.

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Acer SmartRAID V Uživatelský manuál Strana 29