Query NTFS Blocksize

Using 64k blocksize for better performance

Partitions with Veeam-Backups, SQL-Database files or SQL-Logs should be formatted with a 64k blocksize for better performance. You can check blocksizes with a simple command.

Open a CMD Shell with Administrator rights.

fsutil fsinfo ntfsinfo <Drive>

Example for the system partition.

fsutil fsinfo ntfsinfo C:
NTFS-Volumeseriennummer : 0xa892e42c92e400a4
Version : 3.1
Anzahl der Sektoren : 0x000000001dc807ff
Gesamtzahl Cluster : 0x0000000003b900ff
Freie Cluster : 0x0000000000b42c71
Insgesamt reserviert : 0x0000000000000ff0
Bytes pro Sektor : 512
Bytes pro physischen Sektor : 512
Bytes pro Cluster : 4096
Bytes pro Dateidatensatzsegment : 1024
Cluster pro Dateidatensatzsegment : 0
MFT-gültige Datenlänge : 0x0000000017180000
MFT-Start-LCN : 0x00000000000c0000
MFT2-Start-LCN : 0x0000000000000002
MFT-Zonenstart : 0x0000000000eb7240
MFT-Zonenende : 0x0000000000eb9340
RM-Bezeichner: FFFF0956-A102-11E7-87BD-005056C00008

You can see Bytes per Cluster: 4096 which equals 4KB.

Script

To check all local partitions for the corresponding blocksize you can use a PS script, which was originally posted by Stuart Moore.

$wql = "SELECT Label, Blocksize, Name FROM Win32_Volume WHERE FileSystem='NTFS'"
Get-WmiObject -Query $wql -ComputerName '.' | Select-Object Label, Blocksize, Name

Links

Stuart Moore – Get Cluster size for all disks and volumes on a Windows machine using powershell and wmi

Veeam Backup & Replication Best Practices

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Why you should replicate your vCenter Appliance

In the old days of virtualization a vCenter used to be a nice-to-have commodity. But these times are long gone (at least from an IT point of view). In today’s datacenter many services and applications rely heavily on vCenter. Some of the most common use-cases are VDI-environments, cluster balancing mechanisms like DRS or Storage-DRS and even backup software needs vCenter.

The last one is a crucial point. It’s good to have your vCenter Server Appliance (VCSA) backed up regularly and most of you and your customers will likely do so. But think of what would happen if you’d loose your vCenter for like 10 minutes or even an hour.

It’s not just important to have a backup of it – you also need to return to operation fast and minimize your Recovery-Time-Objective (RTO). Continue reading “Why you should replicate your vCenter Appliance”