Once a dynamic pool is created, you cannot change its RAID type or stripe width. However, if you expand the pool using a different drive type, the added drives can have a different stripe width.
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.
ayas
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2021年1月24日 18:00
tanboi_3さん
残念ながらRaid幅（stripe width ）はRaid構成情報に相当しますのでその書き換えはTraditional PoolであろうとDynamic Poolであろうとできないです。
Raid幅（stripe width ）はPool作成時にDrive数と選択されたDrive数によって
システムにて自動設定されます。
参考KB
521936 : Dell EMC Unity: Dynamic pool enhancement/considerations over Traditional pools (User Correctable)
Once a dynamic pool is created, you cannot change its RAID type or stripe width. However, if you expand the pool using a different drive type, the added drives can have a different stripe width.
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.
tanboi_3
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2021年1月24日 19:00
ayasさん
ご回答ありがとうございます。
最初に決めたRAID幅は後で変更できないとのこと承知しました。