IBM ServeRAID M5210, Руководство пользователя

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ServeRAID M5210 SAS/SATA Controller for IBM System x User’s Guide
July 2014 Chapter 1: Overview
Configuration Scenarios
Figure 1 Example of a SAS Direct Connect Application
The following figure shows an example of a ServeRAID controller configured with an expander that is connected to
SAS disks, SATA disks, or both.
Figure 2 Example of a ServeRAID Controller Configured with an Expander
1.3.1 Number of Physical Disks Supported
Your configuration planning for your ServeRAID controller depends in part on the number of physical disks that you
want to use in a RAID array. The number of drives in an array determines the RAID levels that can be supported by this
controller. Only one RAID level can be assigned to each virtual disk.
Table 1 shows the minimum number and the
maximum number of drives required for each RAID level.
Table 1 Physical Devices Required for each RAID Level
Raid Level
Minimum # of
Physical Devices
Maximum # of
Physical Devices
0 1 32
1 2
3
2
5 3 32
6 3 32
10 4 32
50 6 32
60 6 32
Flash ROM/ SAS
PCI Express
RAID Controller
SAS/SATA III Device
32-Bit Memory
Address/Data
Bus
PSBRAM/
I
2
C
SAS/SATA III Device
SAS/SATA III Device
SAS/SATA III Device
PCI Express Interface
NVSRAM
I
2
C
Interface
Flash ROM/
NVSRAM/
SRAM
I
2
C/UART
PCI Express Interface
SAS/SATA
Drives
8
SRAM
SRAM SDRAM
Peripheral
Bus
72-bit DDR/DDR2
with ECC
Interface
PCI Express to SAS ROC
SAS RAID Controller