IBM DS8886 Series User Manual

Table 24. Drive class combinations and tiers for systems with Flash Tier 0 drives as the highest performance drive
class
Drive classes
Drive class combinations
Flash
Tier 0
Flash
Tier 0
+ Flash
Tier 1
Flash
Tier 0
+ Flash
Tier 2
Flash
Tier 0
+ Flash
Tier 1
+ Flash
Tier 2
Flash
Tier 0
+ Flash
Tier 1
+ Ent
Flash
Tier 0
+ Flash
Tier 2
+ Ent
Flash
Tier 0
+ Flash
Tier 1
+ NL
Flash
Tier 0
+ Flash
Tier 2
+ NL
Flash
Tier 0
+ Ent
Flash
Tier 0
+ Ent +
NL
Flash
Tier 0
+ NL
Flash Tier 0 0 0 0 0 0 0 0 0 0 0 0
Flash Tier 1 1 1 1 1
Flash Tier 2 1 2 1 1
Enterprise
(Ent)
2 2 1 1
Nearline (NL) 2 2 2 1
Table 25. Drive class combinations and tiers for systems with Flash Tier 1 drives as the highest performance drive
class
Drive classes
Drive class combinations
Flash Tier 1
Flash Tier 1
+ Flash Tier
2
Flash Tier 1
+ Flash Tier
2 + Ent
Flash Tier 1
+ Flash Tier
2 + NL
Flash Tier 1
+ Ent
Flash Tier 1
+ Ent + NL
Flash Tier 1
+ NL
Flash Tier 1 0 0 0 0 0 0 0
Flash Tier 2 1 1 1
Enterprise (Ent) 2 1 1
Nearline (NL) 2 2 1
Table 26. Drive class combinations and tiers for systems with Flash Tier 2 drives as the highest performance drive
class
Drive classes
Drive class combinations
Flash Tier 2 Flash Tier 2 + Ent
Flash Tier 2 + Ent +
NL Flash Tier 2 + NL
Flash Tier 2 0 0 0 0
Enterprise (Ent) 1 1
Nearline (NL) 2 1
Table 27. Drive class combinations and tiers for systems with Enterprise or Nearline drives
as the highest performance drive class
Drive classes
Drive class combinations
Ent Ent + NL NL
Enterprise (Ent) 1 1
Nearline (NL) 2 2
Cold demotion
Cold data (or extents) stored on a higher-performance tier is demoted to a
more appropriate tier. Easy Tier is available with two-tier disk-drive pools
and three-tier pools. Sequential bandwidth is moved to the lower tier to
increase the efficient use of your tiers.
Chapter 3. Data management features 63

IBM DS8886 Series Specifications

General

Brand	IBM
Model	DS8886 Series
Category	Storage
Language	English