User's Manual

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Virtual Disk Specifications
Table A-43.VirtualDiskSpecificationsfortheSAS5/iR,SAS6/iR,andPERCH200Controllers
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Read, Write, Cache and Disk Cache Policy
Table A-44. Read, Write, and Cache Policy Supported by the SAS 5/iR, SAS 6/iR, and H200 Controllers
RAID 1
Yes
Yes
Yes
RAID 10
No
No
Yes
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Virtual Disk Specification
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SAS 5/IR
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SAS 6/iR
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PERC H200
Maximum Number of Virtual Disks per Controller
2
2
2
Minimum Virtual Disk Size
Max
Max
Max
Maximum Virtual Disk Size
2TB
None
None
Maximum Number of Spans per Virtual Disk
1
1
1
Maximum Number of Physical Disks per Span
4
10
10
Minimum Stripe Size
64k
64k
64k
Maximum Stripe Size
64k
64k
64k
Maximum Number of Virtual Disks per Disk Group
1
1
1
Maximum Number of Physical Disks that Can Be Concatenated
NA
NA
NA
Maximum Number of Physical Disks in a RAID 0
4
8
10 - Adapter
10 - Integrated
4 - Modular
Maximum Physical Disks in a RAID 1
2
2
2
Maximum Number of Physical Disks in a RAID 5
NA
NA
NA
Maximum Number of Physical Disks in a RAID 10
NA
NA
10 - Adapter
10 - Integrated
4 - Modular
Maximum Number of Physical Disks in a RAID 50
NA
NA
NA
Minimum Number of Physical Disks that Can Be Concatenated
NA
NA
NA
Minimum Number of Physical Disks in a RAID 0
2
2
2
Minimum Number of Physical Disks in a RAID 1
2
2
2
Minimum Number of Physical Disks in a RAID 5
NA
NA
NA
Minimum Number of Physical Disks in a RAID 10
NA
NA
4
Minimum Number of Physical Disks in a RAID 50
NA
NA
NA
Maximum number of physical disks in a RAID 6
NA
NA
NA
Maximum number of physical disks in a RAID 60
NA
NA
NA
Minimum number of physical disks in a RAID 6
NA
NA
NA
Minimum number of physical disks in a RAID 60
NA
NA
NA
Maximum number of disks in configured state (part of a virtual disk or hot spares)
8
8
14
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Read, Write, and Cache Policy
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SAS 5/IR
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SAS 6/iR
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PERC H200
Cache settings
No
No
No
Read Policy
No
No
No
Read Ahead (Enabled)
No
No
No
Adaptive Read Ahead
No
No
No
No Read Ahead (Disabled)
No
No
No
Write Policy
No
No
No
Write Back
No
No
No
Write Through
No
No
No
Force Write Back (Enabled Always)
No
No
No
Write Cache Enabled Protected
No
No
No
Cache Policy
No
No
No