IBM i Series Handbook

Internal Magnetic Media
328 iSeries Handbook
Disk Units
This section outlines a comparison of disk storage specifications and provides descriptions
for disk units supported on the iSeries server.
Disk Storage Specifications Comparison
This table shows the specifications of the current and legacy IBM internal disk technologies
supported on the iSeries servers.
Notes:
1. Like lettered disks can be part of the same RAID array, and like numbered disks can mirror each other.
2. Single-byte disks cannot be placed into slots K8 through K16. In the case of the #5055 System Expansion
Unit, single-byte disks cannot be placed into any slots.
3. Not Ultra-SCSI or Ultra2 SCSI when attached to this storage expansion unit.
4. If not coming from a supported upgrade path, order RPQ 843977 for the hardware to mount one disk unit
from one server to another server.
N Available as a new disk.
S Supported but not orderable.
X Available as a migrated disk.
Disk
Type
Disk
Diameter
Capacity
Avg.
Seek
Time
Average
Latency
RPM
Data-
Rate
(Burst)
Areal
Density
(M/inch)
Read
Ahead
Cache
#4308 3.5" 4.19 GB
R 6.5 ms
W 8.0 ms
4.17 ms 7200 40 MB/s
1109 to
1253
1 MB
#4314 3.5" 8.58 GB
R 6.5 ms
W 7.5 ms
4.17 ms 7200 40 MB/s
1109 to
1253
1 MB
#4317 3.5" 8.58 GB
R 5.3 ms
W 6.3 ms
2.99 ms 10 K 80 MB/s
1353 to
2024
4 MB
#4318 3.5" 17.54 GB
R 4.9 ms
W 5.9 ms
2.99 ms 10 K 80 MB/s
3197 to
3535
2 MB
#4319 3.5" 35.16 GB
R 4.9 ms
W 5.9 ms
3.00 ms 10 K 80 MB/s 7040 3.58 MB
#4324 3.5" 17.54 GB
R 7.0 ms
W 8.0 ms
4.17 ms 7200 40 MB/s 3025 1.79 MB
#6605 3.5" 1.031 GB 7.8 ms 4.17 ms 7200 20 MB/s 562 512 KB
#6606 3.5" 1.967 GB 7.8 ms 4.17 ms 7200 20 MB/s 532 512 KB
#6607 3.5" 4.19 GB 8.3 ms 4.17 ms 7200 20 MB/s 829 512 KB

IBM i Series Specifications

General

Operating System	IBM i
Form Factor	Rack, Tower
Storage	SSD and HDD options
Security	compliance
Virtualization	IBM PowerVM
CPU	POWER processors
Scalability	Scale-up