Category: storage / NAS / QNAP

GNU Linux & Windows Server 2012 R2 – benchmark results HighPoint SSD7101A-1 NVMe RAID (harddisk) card + 4x 1TB Kingston NVMe (KINGSTON SA2000M81000G)  (individually and in mdadm RAID10 mode) – disk failures under Win 2012 R2

HighPoint always was and still is “crap”, if the admin wants to upgrade old server with NVMe RAID(10 preferably), than wait for ADAPTEC SmartRaid 3200 family coming out soon for purchase (untested!, see specs here 3200 is the new Trimode […]

unit of data storage – byte kilobyte megabyte gigabyte terabyte petabyte exabyte zettabyte yottabyte nonabyte doggabyte kibibyte mebibyte gibibyte tebibyte pebibyte exbibyte zebibyte yobibyte nobibyte dogbibyte

Byte The term byte was coined by Werner Buchholz in June 1956,[4][13][14][b] during the early design phase for the IBM Stretch[15][16][1][13][14][17][18] computer, backup mirror: PLANNING A COMPUTER SYSTEM BROJECT STRETCH Buchholz Campbell_102636426.pdf which had addressing to the bit and […]


mdadm -E /dev/sd[a-z] # -E, –examine # Print contents of the metadata stored on the named device(s). # Note the contrast between –examine and –detail. # –examine applies to devices which are components of an array, while # –detail applies […]

how to change uuid of logical lvm partitions

problem: manually changing uuids is tidious and might not yield the result you want. unfortunately have not succeeded yet with integrating an old harddisk.vdi (same uuids) back into the template vm (same uuids) – so the recommendation is: reinstall os […]