HP ProLiant DL980 G7 Technical White Paper

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Brand: HP

Category: Network Hardware , Server , Storage , Transceiver

Type: Technical white paper

Model: HP P2000 G3 , HP ProLiant DL980 G7

Pages: 24

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Technical white paper | HP ProLiant DL980 G7 and P2000 G3 MSA Storage
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Manual storage mapping
All Fast Track architectures require a Microsoft Multipath I/O (MPIO) manual mapping scheme. This manual mapping scheme
uses the “Fail over Only” MPIO policy for SAN connected storage. Each LUN has a primary and one or more secondary maps.
Since we are using redundant SAN switches for the Fast Track HA configurations, primary LUN mappings should be spread
out over the available SAN switches. Careful attention should be paid to ensure that LUNs are mapped using controller ports
and HBA ports that are physically connected to the same switch. This DL980 G7 reference architecture is unique in that
there are only 2 Data LUNs per array, rather than the usual 4. In order to provide the best performance, each Data LUN must
map through 2 storage ports rather than one. Table 10 below details a redundant manual mapping example for this DL980
G7 HA architecture.
Table 10. DL980 G7 Example HA manual cross-mapping scheme
LUN
Primary Map
Secondary Map
Comment
Array #1
Data LUN #1
Port A1,A2; HBA 1 Port #1
Port B1,B2; HBA 2 Port#2
In case of switch Loss, ½ of LUNs failover
to secondary map
Data LUN #2
Port B1,B2; HBA 2 Port #2
Port A1,A2; HBA 1 Port#1
Log LUN #1
Port A1,A2; HBA 1 Port #1
Port B1,B2; HBA 2 Port#2
Cluster Root
Disk
Port B1,B2; HBA 1 Port #2
Port A1,A2; HBA 2 Port#1
Root disk holds only SQL and mount point
files.
Array #2
Data LUN #3
Port A1,A2; HBA 2 Port #1
Port B1,B2; HBA 1 Port#2
Data LUN #4
Port B1,B2; HBA 1 Port #2
Port A1,A2; HBA 2 Port#1
Log LUN #2
Port A1,A2; HBA 2 Port #1
Port B1,B2; HBA 3 Port#2
Cluster Quorum
Disk
Port B1,B2; HBA 2 Port #2
Port A1,A2; HBA 3 Port#1
Quorum disk does not house any files;
Cluster use only
Array #3
Data LUN #5
Port A1,A2; HBA 3 Port #1
Port B1,B2; HBA 4 Port#2
Data LUN #6
Port B1,B2; HBA 4 Port #2
Port A1,A2; HBA 3 Port#1
Log LUN #3
Port A1,A2; HBA 3 Port #1
Port B1,B2; HBA 4 Port#2
Array #4
Data LUN #7
Port A1,A2; HBA 4 Port #1
Port B1,B2; HBA 3 Port#2
Data LUN #8
Port B1,B2; HBA 3 Port #2
Port A1,A2; HBA 4 Port#1
Log LUN #4
Port A1,A2; HBA 4 Port #1
Port B1,B2; HBA 3 Port#2
Array #5
Data LUN #9
Port A1,A2; HBA 5 Port #1
Port B1,B2; HBA 11 Port#2
Data LUN #10
Port B1,B2; HBA 11 Port #2
Port A1,A2; HBA 5 Port#1
Log LUN #5
Port A1,A2; HBA 5 Port #1
Port B1,B2; HBA 11 Port#2