28 Implementing the IBM Storwize V5000
2.1 Hardware installation planning
Proper planning before the actual physical installation of the hardware is required. The
following checklist of requirements can be used to plan your installation:
Install the hardware as described in IBM Storwize V5000 Quick Installation Guide Version
For more information about planning the IBM Storwize V5000 environment, see this
An appropriate 19-inch rack with 2 - 14 U of space should be available, depending on the
number of enclosures to install. Each enclosure measures 2 U and a single control
enclosure with up to six expansion enclosures constitutes an IBM Storwize V5000 system.
There should be redundant power outlets in the rack for each of the two power cords that
are included per enclosure. In all, 2 - 14 outlets are required, depending on the number of
enclosures to install. The power cords conform to the IEC320 C13/C14 standards.
A minimum of four Fibre Channel ports that are attached to the fabric are required.
However, it is a best practice to use eight 2-Gbps, 4-Gbps, or 8-Gbps Fibre Channel ports.
You should have eight 2-Gbps, 4-Gbps, or 8-Gbps compatible Fibre Channel cable drops.
Up to four hosts can be directly connected by using SAS ports 1 and 2 on each node
canister, with SFF-8644 mini SAS HD cabling.
You should have a minimum of two Ethernet ports on the LAN, with four preferred for more
configuration access redundancy or iSCSI host access.
You should have a minimum of two Ethernet cable drops, with four preferred for more
configuration access redundancy or iSCSI host access. Ethernet port one on each node
canister must be connected to the LAN, with port two as optional.
Verify that the default IP addresses that are configured on Ethernet port 1 on each of the
node canisters (192.168.70.121 on node one and 192.168.70.122 on node 2) do not
conflict with existing IP addresses on the LAN. The default mask that is used with these IP
addresses is 255.255.255.0 and the default gateway address that is used is 192.168.70.1.
You should have a minimum of three IPv4 or IPv6 IP addresses for system configuration.
One is for the clustered system and is what the administrator uses for management, and
one for each node canister for service access as needed.
Fibre Channel ports: Fibre Channel (FC) ports are required only if you are using FC
hosts. You can use the Storwize V5000 with Ethernet-only cabling for iSCSI hosts or
use serial-attached SCSI (SAS) cabling for direct attach hosts.
Ports: Port 1 on each node canister must be connected to the same physical LAN or be
configured in the same VLAN and be on the same subnet or set of subnets.
IP addresses: A fourth IP address should be used for backup configuration access.
This other IP address allows a second system IP address to be configured on port 2 of
either node canister, which the storage administrator can also use for management of
the IBM Storwize V5000 system.
Chapter 2. Initial configuration 29
A minimum of one and up to four IPv4 or IPv6 addresses are needed if iSCSI attached
hosts access volumes from the IBM Storwize V5000.
A single 1-meter, 3-meter, or 6-meter SAS cable per expansion enclosure is required. The
length of the cables depends on the physical rack location of the expansion relative to the
control enclosure or other expansion enclosures. Locate the control enclosure so that up
to six enclosures can be located, as shown in Figure 2-1 on page 30. The IBM Storwize
V5000 supports two external SAS chains by using SAS ports 3 and 4 on the control
enclosure node canisters.
30 Implementing the IBM Storwize V5000
Figure 2-1 Connecting the SAS expansion cables example
The following connections must be made:
– Connect SAS port 4 of the left node canister in the control enclosure to SAS port 1 of
the left expansion canisters in the first expansion enclosure.
– Connect SAS port 4 of the right node canister in the control enclosure to SAS port 1 of
the right expansion canisters in the first expansion enclosure.