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Hello, I am in the process of setting up a server with a hardware Lenovo 9350-8i Raid Controller card that is running 4 drives behind it.
I am trying to figure out a way I can monitor the drives behind the controller. The card does support S.M.A.R.T. however when I try to check the drives I get the following error
#smartctl -i -d megaraid,0 /dev/sdc
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.9.7-arch1-1] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org
Smartctl open device: /dev/sdc [megaraid_disk_00] failed: cannot open /dev/megaraid_sas_ioctl_node or /dev/megadev0
# smartctl --all /dev/sdc
smartctl 7.4 2023-08-01 r5530 [x86_64-linux-6.9.7-arch1-1] (local build)
Copyright (C) 2002-23, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Vendor: 9350-8i
Product: LOGICAL VOLUME
Revision: 5.91
Compliance: SPC-3
User Capacity: 48,000,487,391,232 bytes [48.0 TB]
Logical block size: 512 bytes
Physical block size: 4096 bytes
Logical Unit id: 0x600508b1001c335b2d18400ca3bc874f
Serial number: L5HF42G02MZ
Device type: disk
Local Time is: Fri Jul 5 09:11:36 2024 EDT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Temperature Warning: Disabled or Not Supported
=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK
Current Drive Temperature: 0 C
Drive Trip Temperature: 0 C
Error Counter logging not supported
Device does not support Self Test logging
Thank you in advance
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The problem with "hardware" raid is that they present the array as a logical volume and hide the physical devices.
A possible option could be to check if this card can be flashed to non-raid (often called IT-mode) and use simple software raid like zfs.
btw: There's no such thing as actual physical hardware raid - it's all specialized firmware running on an asic - so in the end it's all software raid. The only difference is if the code runs on the systems main cpu or on its own chip.
also: The 9350-8i is actual from LSI. Sounds like yours is a dell rebrand. This could lead to an issue if the card fails you may cannot replace it with any other lsi 9350 but require a special dell branded one - depends on if they use custom on-disk format. Another reason for not using "hardware" raid.
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