IBM i series Handbook page 361

Internal Magnetic Media
#1603 One-Byte 1.96 GB Disk Unit Conversion Kit
Provides the hardware for migrating one 1.96 GB one-byte SCSI disk unit to 7xx systems.
#4308 Two-Byte 4.19 GB Disk Unit Ultra SCSI
This feature provides 4.19 GB of disk capacity and an Ultra SCSI interface. Supported in
migration towers only. It is a CIF.
#4314 Two-Byte 8.58 GB Disk Unit Ultra
This feature provides 8.58 GB of disk capacity and an Ultra SCSI interface. It is a CIF.
#4317 Two-Byte 8.58 GB 10k RPM Disk Unit Ultra2
This feature provides 8.58 GB of disk capacity and an Ultra2 SCSI interface. It is a CIF.
#4318 Two-Byte 17.54 GB 10k RPM Disk Unit Ultra2
This feature provides 17.54 GB of disk capacity and an Ultra2 SCSI interface. The minimum
OS/400 level to run this disk unit is V4R4. It is a CIF.
#4319 Two-Byte 35.16 GB 10k RPM Disk Unit Ultra2
This feature provides 35.16 GB of disk capacity and an Ultra2 SCSI interface. The minimum
OS/400 level to run this disk unit is V5R1. It is a CIF.
#4324 Two-Byte 17.54 GB Disk Unit Ultra
This feature provides 17.54 GB of disk capacity and an Ultra SCSI interface. It is a CIF.
#4331 1.6 Gb Read Cache Device
The #4331 is a 1.6-inch high solid state disk device that provides 1.6 Gb of capacity for Large
Read Cache function required by high performance disk unit controllers. This #4331 feature
has CCIN 6731 and is a CIF.
#6605 1.03 GB Two-Byte Disk Unit
Provides a 3 ½-inch single disk unit with 1.03 GB capacity for additional disk storage.
#6606 1.96 GB Two-Byte Disk Unit
Provides a 3 ½-inch single disk unit with 1.96 GB capacity for additional disk storage.
#6607 4.19 GB Two-Byte Disk Unit
Provides a 3 ½-inch single disk unit with 4.19 GB capacity for additional disk storage.
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Internal Magnetic Media