Catalina Fusion Drive

  我的黑苹果系统盘是NVME固态硬盘，数据盘原来是一块512G的SSD，很快塞满了。把群晖NAS升级8T硬盘退下来的3T西数绿盘拿来做数据盘又担心速度太慢，想起苹果的Fusion drive，就试试看看能不能把数据盘做成Fusion drive。苹果系统升级到Catalina之后，Fusion drive开始支持Apfs，很多教程都不管用了。

准备工作

  创建Fusion drive需要2块盘，一块定义为快速盘，一般是SSD固态硬盘，一块定义为Designated Aux Use，一般是机械硬盘。创建会抹去盘上的内容，请先备份好数据。

  两块盘都需要是内置硬盘，可以用diskutil list查看

/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:                 Apple_APFS Container disk7         499.8 GB   disk1s2

/dev/disk5 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk5
   1:                        EFI EFI                     209.7 MB   disk5s1
   2:                 Apple_APFS Container disk7         3.0 TB     disk5s2

disk后面有internal, physical就对了

创建Fusion

用diskutil list确定用来做fusion drive的两块盘的盘号，我的就是/dev/disk1 /dev/disk5

# diskutil coreStorage create fusion /dev/disk1 /dev/disk5 #这里盘符可能有顺序要求，SSD在前
Core Storage LVG UUID: 54ACD5EA-0E03-419A-8286-F405C6F01570
# diskutil coreStorage createVolume 54ACD5EA-0E03-419A-8286-F405C6F01570 jhfs+ MacData 100% # 这里MacData是我用的盘符，中间那串数字是上面创建cs的UUID

稍微等一会，就创建完了。可以重启一下确认能看到这块Fusion Drive

转成Apfs

这个用Diskutil（磁盘工具）转就行了。

转完之后就能用了。

# diskutil apfs list
APFS Containers (2 found)
|
+-- Container disk3 DE7A8C62-065C-4E2B-9D76-202932EE0307
|   ====================================================
|   APFS Container Reference:     disk3
|   Size (Capacity Ceiling):      499898105856 B (499.9 GB)
|   Capacity In Use By Volumes:   361652838400 B (361.7 GB) (72.3% used)
|   Capacity Not Allocated:       138245267456 B (138.2 GB) (27.7% free)
|   这个是我的系统盘
....
   这是Fusion drive
+-- Container disk7 54ACD5EA-0E03-419A-8286-F405C6F01570
    ====================================================
    APFS Container Reference:     disk7 (Fusion)
    Size (Capacity Ceiling):      3500147113984 B (3.5 TB)
    Capacity In Use By Volumes:   276260708352 B (276.3 GB) (7.9% used)
    Capacity Not Allocated:       3223886405632 B (3.2 TB) (92.1% free)
    |
    +-< Physical Store disk1s2 D872C3B7-820C-4070-B443-E3A5F46F7A6A
    |   -----------------------------------------------------------
    |   APFS Physical Store Disk:   disk1s2 (Main, "Faster" Disk Use)
    |   Size:                       499763888128 B (499.8 GB)
    |
    +-< Physical Store disk5s2 ACF0D060-9A2E-4559-AA0C-AF52612891C7
    |   -----------------------------------------------------------
    |   APFS Physical Store Disk:   disk5s2 (Secondary, Designated Aux Use)
    |   Size:                       3000383225856 B (3.0 TB)
    |
    +-> Volume disk7s1 313C79B1-B310-32CD-932C-2CD788E8801B
        ---------------------------------------------------
        APFS Volume Disk (Role):   disk7s1 (No specific role)
        Name:                      MacData (Case-insensitive)
        Mount Point:               /Volumes/MacData
        Capacity Consumed:         267227234304 B (267.2 GB)
        FileVault:                 No

测速

  比起系统盘慢好多……
Samsung 970 EVO:

Fusion Drive (Samsung 870 500G + WD Green Drive 3T)

• 本文作者： KCN
• 本文链接： https://www.kcn.me/2020/06/29/Catalina-Fusion-Drive/
• 版权声明： 未经允许，请勿转载