Drives in a heterogeneous pool have a mixture of drive types, such as a mixture of NL-SAS, SAS, and SAS Flash 2 drives.
In physical deployments, storage in traditional pools is managed in RAID group units, where: ● A drive is consumed by a single RAID group. ● A RAID group is limited to a maximum of 16 drives and is composed of drives of the same type. ● Each tier supports a single RAID type.
Once a tier in a traditional pool is created, you cannot change the RAID type or stripe width of the existing drives in the tier. However, if you expand a tier within a traditional pool, you can specify a different stripe width for the newly-added drives. When you add a new tier to a traditional pool, you can specify a different RAID type, stripe width, or both for the newly-added drives.
Page 16 Hybrid pools can have up to 3 tiers (Extreme Performance, Performance, and Capacity). Dell Technologies recommends using only a single drive speed, size, and RAID width within each tier of a hybrid pool.
ayas
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2024年3月22日 08:38
tvs_134さん
1.8TB SAS Disk(Raid5 4+1)×80本(+HS 3本)で全てSAS/1.6TB SSD Disk(Raid6 4+2)×6本(+HS 1本)を追加したい
→Traditional Poolでも異なるTierとしてtvs_134さんの構成での追加は可能です。
参考：Dell Unity™ Family Configuring Pools
Page 8 Traditional pools
Drives in a heterogeneous pool have a mixture of drive types, such as a mixture of NL-SAS, SAS, and SAS Flash 2 drives.
In physical deployments, storage in traditional pools is managed in RAID group units, where:
● A drive is consumed by a single RAID group. ● A RAID group is limited to a maximum of 16 drives and is composed of drives of the same type. ● Each tier supports a single RAID type.
Once a tier in a traditional pool is created, you cannot change the RAID type or stripe width of the existing drives in the tier. However, if you expand a tier within a traditional pool, you can specify a different stripe width for the newly-added drives. When you add a new tier to a traditional pool, you can specify a different RAID type, stripe width, or both for the newly-added drives.
（Traditional Raid Poolで既存のRaidタイプを変更することはできないが、追加ドライブで別のTierとして異なったRaid幅、Raidタイプを構成することは可能）
Dell EMC Unity: Best Practices Guide
Page 16 Hybrid pools can have up to 3 tiers (Extreme Performance, Performance, and Capacity). Dell Technologies recommends using only a single drive speed, size, and RAID width within each tier of a hybrid pool.