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Saturday, March 18, 2023

Server chronicles - Drobo on ProLiant

 On the old server I used a USB Drobo unit to backup data.

In theory should be enough to connect the unit to the server to see it .. and in part is true, but there are some unexpected problems.

Drobom

It is necessary to install the drobom utility (part of the package Drobo Utils).
Because the version of Linux the only reliable way is from GitHub, installing the source and building it.
Drobo-utils is not anymore available as package from the distribution.

Once installed and configured there are mainly two useful commands (it is assumed the drobom command be in the path or be in the directory containing it) :

  • sudo ./drobom status
  • sudo ./drobom info

Status

The status command allows to see if everything is normal and the used capacity of the unit.
For example :

$ sudo ./drobom status
/dev/sdb /media/drobo Drobo 80% full - ([], 0)

Info

The Info command returns information about the unit configuration and status of each hard disk :


$ sudo ./drobom info
---------------------------------------------------------
Drobo Name: Drobo      Devices: /dev/sdb
      Time: Tue May  9 19:04:11 2023
---------------------------------------------------------
Configuration maxima: slots: 5, luns: 16, lunsize: 68 TB
Capacity (in GB):  used: 2655, free: 642, total: 3298
protocol version:  0.11
SCSI emulation information:
Vendor: Drobo  Model: Gen3B810i Revision: 5.00
/dev/sdb: bus=scsi3 channel=0 id=0 lun=0 (vendor=Drobo, version=30527)
query slotinfo result:  number of slots: 5
slot   GB                Model               Status
   0 2000 Hitachi HUA72302SATA                green
   1  500 WDC WD5000AADS-0SATA                green
   2 1000 ST1000DM003-1CH1SATA                green
   3 2000 Hitachi HUA72302SATA                green
   4    0                                      gray
Firmware: 3.5.3
Revision: 11.48 ( 19122 ) built: Sep 29 2016,21:42:00
Features: NO_AUTO_REBOOT,NO_FAT32_FORMAT,USED_CAPACITY_FROM_HOST,DISKPACKSTATUS,ENCRYPT_NOHEADER,CMD_STATUS_QUERIABLE,VARIABLE_LUN_SIZE_1_16,PARTITION_LUN_GPT_MBR,FAT32_FORMAT_VOLNAME,SUPPORTS_NEW_LUNINFO2,feature x0800,feature x2000,SUPPORTS_OPTIONS2,SUPPORTS_SHUTDOWN,feature x10000,feature x40000,feature x80000,SUPPORTS_SINGLE_LUN_FORMAT,leftovers (0x10600000)
/dev/sdb /media/drobo Drobo 80% full - ([], 0)
YellowThreshold 85
RedThreshold 95
SpinDownDelayMinutes 14
Flags 2
DualDiskRedundancy False
SpinDownDelay True
UseManualVolumeManagement False
hoho! multiple partition types! Brave are we not?
lun     size (GB) used    PTFmt  FStype:
  0    70368      2655      GPT [] 
---------------------------------------------------------

So it is possible to regularly interrogate the unit and extract from the Info if one hard disk has problems and the remaining capacity of the unit.


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