NetApp Disk Shelf

[Quest_for_storage]

I have recently acquired a DS2246 shelf. I can see the drives using an HBA, but I am not sure if a firmware update is needed or how to communicate with the shelf (or IOM6 controllers) to get some basic information. I do not have a NetApp head node, but I also don’t see a NetApp head node in Wendell’s video but he could probe basic information like “Mode: Active/Active” (please see picture below. This picture was taken at 1:25 from the YouTube Video titled “Storage Server Update: Hardware, Optane, ZFS, and More!” from Level1Techs)

So my question is how to get such information from a NetApp shelf?

Thanks.

[Mastic_Warrior]

Good question. We have have NetApp heads here and that is the only way that I know how to access the disk shelves.

[marelooke]

If I’m not mistaken these just behave as SAS enclosures, so I’d imagine the standard tools for prying information from enclosures should work:

• sesutil (BSD-only)
• sg3_utils
• sas2ircu (LSI controllers)

Not sure which one Wendell was using. Based on the output and given that I think their NAS runs/ran FreeNAS it’s probably sesutil, which, unfortunately, is BSD-only.

sas2ircu is probably the most user friendly of the Linux options, if you use a LSI controller. sg3_utils is the more “general” option, but by far the least user friendly.

Quick walkthrough for sg3_utils basics:

Find out which of your devices are enclosures (uses lsscsi)

root@avaritia:~# lsscsi -g
...
[0:0:16:0]   enclosu LSI      SAS2X36          0e0b  -          /dev/sg16
...

Query it for supported commands:

root@avaritia:~# sg_ses /dev/sg16
  LSI       SAS2X36           0e0b
Supported diagnostic pages:
  Supported Diagnostic Pages [sdp] [0x0]
  Configuration (SES) [cf] [0x1]
  Enclosure Status/Control (SES) [ec,es] [0x2]
  Element Descriptor (SES) [ed] [0x7]
  Additional Element Status (SES-2) [aes] [0xa]
  Download Microcode (SES-2) [dm] [0xe]

To get the enclosure state:

root@avaritia:~# sg_ses -R --page=es /dev/sg16
  LSI       SAS2X36           0e0b
Enclosure Status diagnostic page:
  INVOP=0, INFO=1, NON-CRIT=0, CRIT=0, UNRECOV=0
  generation code: 0x0
  status descriptor list
    Element type: Array device slot, subenclosure id: 0 [ti=0]
      Overall descriptor:
        Predicted failure=0, Disabled=0, Swap=0, status: Unsupported
        OK=0, Reserved device=0, Hot spare=0, Cons check=0
        In crit array=0, In failed array=0, Rebuild/remap=0, R/R abort=0
        App client bypass A=0, Do not remove=0, Enc bypass A=0, Enc bypass B=0
        Ready to insert=0, RMV=0, Ident=0, Report=0
        App client bypass B=0, Fault sensed=0, Fault reqstd=0, Device off=0
        Bypassed A=0, Bypassed B=0, Dev bypassed A=0, Dev bypassed B=0
...
<loads more output>

[Quest_for_storage]

@marelooke

• sg3_utils
• sas2ircu (LSI controllers)

Thanks for your detailed information. Both sg3_utils and sas2ircu can return information. May I ask how to check if the mode is “Active/Active” (high availability) from these tools?