Running macOS Catalina version 10.15.6 via on a Micron 9300 MAX 6.4TB U.2 SSD;
- On my iMac (Retina 5K, 27-inch, 2017) 3.4 GHz Quad-Core Intel Core i5, via:
- Highpoint RocketStor 6661A Thunderbolt 3 to PCIe 3.0 X16 Expansion Chassis;
- StarTech.com U.2 to PCIe Adapter - x4 PCIe - For 2.5" U.2 NVMe SSD - SFF-8639 PCIe Adapter - U.2 SSD - PCIe SSD - U.2 drive (PEX4SFF8639).
- Had to disable System Integrity Protection via Terminal (csrutil disable)
- Installed Catalina from booting in Command-R (internet download)
- Had a few hiccups during the install where drive did not remount after a reboot.
- On this iMac via a TB3 connection, the drive runs at about 2400 read/write per BlackMagic Disk Speed Test
- Runs hot with constant use but the speed on the Micron 9300 MAX 6.4TB U.2 SSD remains stable.
My 1TB Fusion drive sucked, having been storing my libraries on slow external HDDs for years. Don't need a newer iMac and cannot justify the many thousands extra I would spend to get 4TB or 8TB of SSD internal storage.
Wanted everything on one volume. Played around with logical volumes, RAID volumes, combinations of M.2 NVME SSDs, and decided against keeping single 8TB QLC M.2 NVME drive.
The Micron Max is not the least expensive option (noting I probably should have gone with the Micron 9300 Pro series) but the dollars per terabyte don't seem too bad when you consider its rated endurance at 37.3PB written--arguably more reliable than the best M.2 like Samsung 970 Pro and substantially less expensive per terabyte, and the Samsung 970 Pro tops out at 1TB.
Here is what my system tells me:
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With constant use,
SMARTReporter/Advanced Tool/Show attribute -- reports the following information on the Micron 9300 MAX 6.4TB U.2 SSD:
smartctl 6.6 2017-11-05 r4594 [Darwin 19.6.0 x86_64] (sf-6.6-1)
Copyright (C) 2002-17, Bruce Allen, Christian Franke,
www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Number: Micron_9300_MTFDHAL6T4TDR
Serial Number: [REDACTED]
Firmware Version: 11300B20
PCI Vendor/Subsystem ID: 0x1344
IEEE OUI Identifier: 0x00a075
Total NVM Capacity: 6,401,252,745,216 [6.40 TB]
Unallocated NVM Capacity: 0
Controller ID: 1
Number of Namespaces: 32
Local Time is: Thu Sep 24 20:42:31 2020 EDT
Firmware Updates (0x07): 3 Slots, Slot 1 R/O
Optional Admin Commands (0x000e): Format Frmw_DL NS_Mngmt
Optional NVM Commands (0x0014): DS_Mngmt Sav/Sel_Feat
Maximum Data Transfer Size: 32 Pages
Warning Comp. Temp. Threshold: 75 Celsius
Critical Comp. Temp. Threshold: 80 Celsius
Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
0 + 25.00W - - 0 0 0 0 100 100
1 + 24.00W - - 1 1 1 1 115 115
2 + 23.00W - - 2 2 2 2 130 130
3 + 22.00W - - 3 3 3 3 145 145
4 + 21.00W - - 4 4 4 4 160 160
5 + 20.00W - - 5 5 5 5 175 175
6 + 19.00W - - 6 6 6 6 190 190
7 + 18.00W - - 7 7 7 7 205 205
8 + 17.00W - - 8 8 8 8 220 220
9 + 16.00W - - 9 9 9 9 235 235
10 + 15.00W - - 10 10 10 10 250 250
11 + 14.00W - - 11 11 11 11 265 265
12 + 13.00W - - 12 12 12 12 280 280
13 + 12.00W - - 13 13 13 13 295 295
14 + 11.00W - - 14 14 14 14 310 310
15 + 10.00W - - 15 15 15 15 325 325
=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
SMART/Health Information (NVMe Log 0x02, NSID 0x0)
Critical Warning: 0x00
Temperature: 55 Celsius
Available Spare: 100%
Available Spare Threshold: 5%
Percentage Used: 0%
Data Units Read: 6,050,411 [3.09 TB]
Data Units Written: 6,975,767 [3.57 TB]
Host Read Commands: 41,510,797
Host Write Commands: 39,916,743
Controller Busy Time: 1,524
Power Cycles: 19
Power On Hours: 28
Unsafe Shutdowns: 2
Media and Data Integrity Errors: 0
Error Information Log Entries: 0
Warning Comp. Temperature Time: 0
Critical Comp. Temperature Time: 0
Temperature Sensor 1: 67 Celsius
Temperature Sensor 2: 55 Celsius
Temperature Sensor 3: 50 Celsius
Temperature Sensor 4: 49 Celsius
Read Error Information Log failed: NVMe admin command:0x02/page:0x01 is not supported
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Apple Disk Utility Get Info shows:
Volume name : U2 Micron 6400GB
Volume type : APFS Volume
BSD device node : disk5s2
Mount point : /
System : macOS 10.15.6 (19G2021)
File system : APFS
Connection : PCI-Express
Device tree path : IODeviceTree:/PCI0@0/RP05@1C,4/UPSB@0/DSB1@1/UPS0@0/pci-bridge@1/pci1344,51b2@0/IONVMeController
Writable : No
Is case-sensitive : No
File system UUID : [REDACTED]
Volume capacity : 6,400,908,771,328
Available space (Purgeable + Free) : 4,261,144,547,480
Purgeable space : 765,681,774,744
Free space : 3,495,462,772,736
Used space : 12,436,078,592
File count : 372,871
Owners enabled : Yes
Is encrypted : No
System Integrity Protection supported : Yes
Can be verified : Yes
Can be repaired : Yes
Bootable : Yes
Journaled : No
Disk number : 5
Partition number : 2
Media name :
Media type : Generic
Ejectable : Yes
Solid state : Yes
S.M.A.R.T. status : Not Supported
Parent disks : disk5
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Apple System Report - Thunderbolt
Thunderbolt Bus:
Vendor Name: Apple Inc.
Device Name: iMac
UID: [REDACTED]
Route String: 0
Firmware Version: 41.4
Domain UUID: [REDACTED]
Port:
Status: No device connected
Link Status: 0x7
Speed: Up to 40 Gb/s x1
Current Link Width: 0x1
Receptacle: 1
Link Controller Firmware Version: 0.39.0
Port:
Status: Device connected
Link Status: 0x2
Speed: Up to 40 Gb/s x1
Current Link Width: 0x2
Receptacle: 2
Link Controller Firmware Version: 0.39.0
RocketStor 6661A:
Vendor Name: HighPoint Technologies, Inc.
Device Name: RocketStor 6661A
Vendor ID: 0x43
Device ID: 0x6661
Device Revision: 0x1
UID: [REDACTED]
Route String: 3
Firmware Version: 26.1
Port (Upstream):
Status: Device connected
Link Status: 0x2
Speed: Up to 40 Gb/s x1
Current Link Width: 0x2
Link Controller Firmware Version: 0.36.0
Port:
Status: No device connected
Link Status: 0x7
Speed: Up to 40 Gb/s x1
Current Link Width: 0x1
Link Controller Firmware Version: 0.36.0
Apple System Report - Storage (Systems/Volumes/Data)
Free: 3.48 TB (3,479,567,523,840 bytes)
Capacity: 6.4 TB (6,400,908,771,328 bytes)
Mount Point: /System/Volumes/Data
File System: APFS
Writable: Yes
Ignore Ownership: No
BSD Name: disk5s1
Volume UUID: [REDACTED]
Physical Drive:
Device Name: Micron_9300_MTFDHAL6T4TDR
Media Name: AppleAPFSMedia
Medium Type: SSD
Protocol: PCI-Express
Internal: No
Partition Map Type: Unknown
S.M.A.R.T. Status: Verified
------------------------------------------------------------------------------------
Apple System Report - NVMExpress
Micron_9300_MTFDHAL6T4TDR:
Capacity: 6.4 TB (6,401,252,745,216 bytes)
TRIM Support: Yes
Model: Micron_9300_MTFDHAL6T4TDR
Revision: 11300B20
Serial Number: [REDACTED]
Link Width: x4
Link Speed: 8.0 GT/s
Detachable Drive: No
BSD Name: disk4
Partition Map Type: GPT (GUID Partition Table)
Removable Media: No
S.M.A.R.T. status: Verified
Volumes:
EFI:
Capacity: 209.7 MB (209,715,200 bytes)
File System: MS-DOS FAT32
BSD Name: disk4s1
Content: EFI
Volume UUID: [REDACTED]
disk4s2:
Capacity: 6.4 TB (6,400,908,771,328 bytes)
BSD Name: disk4s2
Content: Apple_APFS
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