HP BLc7000 HP Direct-Connect External SAS Storage for HP BladeSystem Solutions - Page 95

MDS600 single domain, high-performance cabling, max performance with SATA drives

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MDS600 single domain, high-performance cabling, max performance with SATA drives This example illustrates cabling for best-possible performance in a single-domain configuration using single-port SATA drives. In this configuration, note the following: • This configuration combines a unique cabling scheme AND zone group creation strategy to achieve best possible performance in a single-domain configuration. • High-performance cabling adds an additional cable from each MDS600 I/O module (in each MDS600 drawer) to the switch, improving performance by providing an additional connection between the storage and the server: one cable provides a 4x connection; two cables provide a 8x (high-performance connection. For more information on switch ports, 4x, and 8x (high-performance cabling, see "HP 3Gb SAS BL Switch" (page 22). • Adding a second HP 3Gb SAS BL Switch (even though this is a single-domain environment) improves performance by providing two more connections between the MDS600 drawer and the server, for a total of four connections (when used in conjunction with the outlined cabling scheme and zone group creation strategy.) • Connecting one MDS600 drawer to one switch and the other MDS600 drawer to the same ports on the other switch allows for the creation of zone groups that span the MDS600 drawers. • Creating zone groups that include drives from each MDS600 drawer takes advantage of the unique cabling, so that all four connections between the storage and the server can be utilized. • To achieve maximum performance, assign more than two drives from each MDS600 drawer to each zone group. IMPORTANT: • Both cables from an MDS600 I/O module must connect to one of the following pairs of switch ports: 1/2, 3/4, 5/6, or 7/8. • When using SATA drives in high performance configurations, the storage enclosure drawer must be fully populated with SATA drives. MDS600 single domain, high-performance cabling, max performance with SATA drives 95

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MDS600 single domain, high-performance cabling, max performance with
SATA drives
This example illustrates cabling for best-possible performance in a single-domain configuration
using single-port SATA drives
. In this configuration, note the following:
•
This configuration combines a unique cabling scheme AND zone group creation strategy to
achieve best possible performance in a single-domain configuration.
•
High-performance cabling adds an additional cable from each
MDS600
I/O module (in each
MDS600 drawer) to the switch, improving performance by providing an additional connection
between the storage and the server: one cable provides a 4x connection; two cables provide
a 8x (high-performance connection. For more information on switch ports, 4x, and 8x
(high-performance cabling, see
“HP 3Gb SAS BL Switch” (page 22)
.
•
Adding a second HP 3Gb SAS BL Switch (even though this is a single-domain environment)
improves performance by providing two more connections between the MDS600 drawer and
the server, for a total of four connections (when used in conjunction with the outlined cabling
scheme and zone group creation strategy.)
•
Connecting one MDS600 drawer to one switch and the other MDS600 drawer to the same
ports on the other switch allows for the creation of zone groups that span the MDS600 drawers.
•
Creating zone groups that include drives from each MDS600 drawer takes advantage of the
unique cabling, so that all four connections between the storage and the server can be utilized.
•
To achieve maximum performance, assign more than two drives from each MDS600 drawer
to each zone group.
IMPORTANT:
•
Both cables from an MDS600 I/O module must connect to one of the following pairs of switch
ports: 1/2, 3/4, 5/6, or 7/8.
•
When using SATA drives in high performance configurations, the storage enclosure drawer
must be fully populated with SATA drives.
MDS600 single domain, high-performance cabling, max performance with SATA drives
95