IBM DS8886 Series User Manual

Table 42. RAID capacities for RAID 10 arrays (continued)
Drive size and
type
Total physical
capacity (GB)
per drive set
1
Fixed block (FB)
or count key
data (CKD)
Effective capacity in GB
(number of extents)
2, 3
Rank with RAID 10 array
3 + 3 4 + 4
800 GB 2.5-in.
flash drive (SSD)
12,800 FB 2,290.29
(2,133)
3,065.53
(2,855)
CKD 2,262.85
(2,392)
3,029.11
(3,202)
1.2 TB disk
drives
19,200 FB 3,389.80
(3,157)
4,532.26
(4,221)
CKD 3,349.81
(3,541)
4,478.39
(4,734)
1.6 TB flash
drive (SSD)
25,600 FB 4,617.09
(4,300)
6,168.65
(5,745)
CKD 4,562.58
(4,823)
6,096.06
(6,444)
1.8 TB disk
drives
28,800 FB 5,103.49
(4,753)
6,817.19
(6,349)
CKD 5,043.16
(5,331)
6,736.51
(7,121)
4 TB disk drives
(Nearline)
64,000 FB 11,385.96
(10,604)
15,180.56
(14,138)
CKD 11,250.84
(11,893)
15,000.81
(15,857)
6 TB disk drives
(Nearline)
96,000 FB 17,136.92
(15,960)
22,849.23
(21,280)
CKD 16,933.50
(17,900)
22,578.31
(23,867)
Notes:
1. Disk-drive and flash-drive sets contain 16 disk drives. Half-drive sets contain 8 disk
drives.
2. Physical capacities are in decimal gigabytes (GB) and terabytes (TB). One decimal GB is
1,000,000,000 bytes. One decimal TB is 1,000,000,000,000 bytes.
3. Rank capacities of DS8880 are different from rank capacities of earlier DS8000 storage
systems. This change in the number of extents must be planned for when you move or
migrate data to the DS8880.
I/O adapter features
You must select the I/O adapter features that you want for your storage system.
The I/O adapter features are separated into the following categories:
v I/O enclosures
v Device adapters
v Host adapters
v Host adapters Fibre Channel cables
v zHyperLink adapter
v zHyperLink cables
v Transparent cloud tiering adapters
98 DS8880 Introduction and Planning Guide

IBM DS8886 Series Specifications

General

Brand	IBM
Model	DS8886 Series
Category	Storage
Language	English