replace a drive, ensure that you order the correct drive. Using an unsupported
drive can cause the drive to be locked out by the controller firmware.
Attention:
1. After you remove a drive from a bay, wait for 70 seconds to allow the drive to
spin down before you replace or reseat the drive. Failure to do so might cause
unpredictable results.
2. Never hot-swap a drive when its associated green activity LED or amber fault
LED is flashing. Hot-swap a drive only when its associated amber fault LED is
lit continuously or when the drive is inactive and its associated green activity
LED is not flashing.
Note: If the drive that you want to remove is not in a failed or bypass state, use
the Storage Manager software either to place the drive in a failed state or to place
the subsystem that is associated with the drive (or drives) in an offline state, before
you remove the drive from the enclosure.
Controllers
The DS3500 storage subsystem controllers are discussed in this topic.
The DS3500 storage subsystem comprises one or two controllers. When the DS3500
storage subsystem has two controllers, the controllers are redundant and can be
hot-swapped. The controllers contain the storage subsystem control logic, interface
ports, and LEDs. Each controller contains the following ports:
v Two 6 Gbps SAS host ports
v One SAS drive port to connect EXP3500 storage enclosures
v Two Ethernet ports for subsystem management
v Support for one optional host port adapter:
– Two-port 6 Gbps SAS
– Four-port 8 Gbps FC
– Four-port 1 Gbps iSCSI
– Two-port 10 Gbps iSCSI
The Ethernet ports consist of the following default IP addresses:
Port 1 on controller A is 192.168.128.101
Port 2 on controller A is 192.168.129.101
Port 1 on controller B is 192.168.128.102
Port 2 on controller B is 192.168.129.102
The subnet mask for both Ethernet ports is 255.255.255.0.
Attention: When a DS3500 storage subsystem has two controllers, the controllers
must be identical to each other in hardware (host port adapter and cache size) and
firmware. If you install a host port adapter in one controller, you must install an
identical host port adapter in the other controller.
The storage management software automatically sets the enclosure ID for the
controllers. You can change the enclosure ID through the Storage Manager software
only. There are no switches on the DS3500 chassis to manually set the enclosure ID.
Both controller enclosure IDs are identical under normal operating conditions.
Figure 7 on page 13 shows a single-controller storage subsystem without an
optional host port adapter installed. See “Cabling the DS3500 storage subsystem”
on page 31 for illustrations of the storage subsystem with optional host port
12 IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide
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