The following tables list the hardware features for the IBM ServeRAID-4 controllers:
Feature | ServeRAID-4H | ServeRAID-4Mx | ServeRAID-4Lx |
---|---|---|---|
Arrays (max.) | 8 | 8 | 8 |
Battery-backup cache | Yes | Yes | No |
Cache memory | 128 MB | 64 MB | 32 MB |
Hard disk drives (max.) | 60 | 30 | 15 |
Logical drives (max.) | 8 | 8 | 8 |
Microprocessor | 266 MHz | 100 MHz | 100 MHz |
SCSI channels | 4 | 2 | 1 |
SCSI transfer speed (max.) | 160 MB per sec. | 160 MB per sec. | 160 MB per sec. |
Supported RAID levels | 0, 1, 5, Enhanced-1 (1E), and Enhanced-5 (5E), 00, 10, 1E0, 50 | 0, 1, 5, Enhanced-1 (1E), and Enhanced-5 (5E), 00, 10, 1E0, 50 | 0, 1, 5, Enhanced-1 (1E), and Enhanced-5 (5E), 00, 10, 1E0, 50 |
System PCI data bus | 64 bit at 33 MHz | 64 bit at 33 to 66 MHz | 64 bit at 33 to 66 MHz |
Feature | ServeRAID-4M | ServeRAID-4L |
---|---|---|
Arrays (max.) | 8 | 8 |
Battery-backup cache | Yes | No |
Cache memory | 64 MB | 16 MB |
Hard disk drives (max.) | 30 | 15 |
Logical drives (max.) | 8 | 8 |
Microprocessor | 100 MHz | 100 MHz |
SCSI channels | 2 | 1 |
SCSI transfer speed (max.) | 160 MB per sec. | 160 MB per sec. |
Supported RAID levels | 0, 1, 5, Enhanced-1 (1E), and Enhanced-5 (5E), 00, 10, 1E0, 50 | 0, 1, 5, Enhanced-1 (1E), and Enhanced-5 (5E), 00, 10, 1E0, 50 |
System PCI data bus | 64 bit at 33 MHz | 64 bit at 33 MHz |
x-1091-SRM-00-03-EN