Management window. The default DS4000 storage subsystem entry still
displays, but shows an “unresponsive” icon.
8. If applicable, change the IP address of the Ethernet port in the management
station to a value that is on the same TCP/IP subnet as the controller Ethernet
port IP addresses that you just assigned. Exit DS4000 Storage Manager, then
restart.
9. Add a new storage subsystem entry in the Enterprise Management window,
using the new assigned IP addresses.
Note:
To manage storage subsystems through a firewall, configure the firewall to
open port 2463 to TCP data.
Controller memory
Each RAID controller has up to 8 GB of data cache memory, for a total of up to 16
GB cache memory per DS4800. Each RAID controller also has a total of either 512
MB (for models 80A/H, 82A/H or 84A/H) or 1024 MB (for models 88A/H) of Intel
Pentium Xeon processor memory. The processor memory stores the controller
firmware, while the data cache is a buffer used to temporarily store hard disk drive
data during data read and write operations. A Cache Active LED on the controller
turns on when the cache contains data that has not been written to hard disk
drives. The Cache Active LED turns off when the cache does not contain unwritten
data.
Table 6 lists the technical specifications for the RAID controllers.
Table 6. RAID controller specifications
Category Criteria Specification
Memory Cache size 2 GB, 4 GB or 8 GB,
depending on the model
Interface Fibre channel host port 4 fiber-optic ports per
controller
2 Ethernet ports per controller
(for out-of-band management)
Fibre channel drive expansion
port
4 fiber-optic ports per
controller
Note: Each DS4800
controller drive channel has
two ports. There are two drive
channels per DS4800
controller.
Storage Expansion Enclosure
Support
Redundant drive channel
pairs
2 per controller
Maximum number of drives
per redundant drive channel
pair
112 drives per redundant
drive channel pair (either 8
storage expansion enclosures
with 14 drives each or 7
storage expansion enclosures
with 16 drives each). See
Table 4 on page 9.
Maximum number of drives
supported by one DS4800
224 drives (2 redundant drive
channel pairs with 112 drives
in each drive channel pair)
16 IBM System Storage DS4800 Storage Subsystem: Installation, User’s, and Maintenance Guide
|
|
|
|
|
|
|
|
|
|
To Next Page
Loading...
Need help?
General