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Category Archives: Storage
Analyzing Storage Performance issues with PerfMon
Perfmon is a built in Windows utility that measures performance, it has been introduced in Windows 3.1 and has shipped with every version of Windows ever since. I think every admin should become a little bit more familiar with it … Continue re...
Posted in Microsoft, Storage
Tagged Calculating IOPs from Perfmon data, IOPS PERFMON COUNTER, Measuring Disk Latency with PerfMon, perfmon disk counters explained, perfmon disk throughput scale MB per second, Troubleshooting Slow Disk I/O in SQL Server, understanding disk queue perfmon, What counters in Windows Performance Monitor show the physical disk latency?, Windows Performance Monitor Disk Counters Explained
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EqualLogic PS4100E SAN Adding a second member to a group through a serial connection
We have a PS4100 EqualLogic storage array that was running out of space. All the drive bays were full so we ordered another unit. I set it up as RAID-50 and added it as a second member to the group. … Continue reading →...
EqualLogic PS4100E SAN Configuring the first member initial config
Working for a service provider i received a great opportunity to rack and configure a storage array. There is nothing better then unboxing a fresh SAN and peeling off the stickers. Each storage controller has two network interfaces eth0/eth1 for &hel...
How to set up SQL Server 2014 AlwaysOn Availability Groups
There are many different ways that you can configure SQL for high availability, mirroring, failover cluster using shared disks, AlwaysOn, log shipping, replication. This guide describes how to configure an AlwaysON Availability Groups in SQL Server...
How to install ESXi from a USB flash drive
Here are some steps how to install an ESXi host from a USB key. If you have a host that does not have a CD drive or if you have a stubborn USB key that does not want to boot … Continue reading →...
How to Present and Mount an NFS share in RedHat / CentOS
Here is a quick guide how to present and mount an NFS share in RedHat / CentOS including Iptables configuration. By default Iptables blocks the ports required to connect to an NFS server, although the NFS server mainly uses UDP/TCP … Continue ...
Boot Openfiler 2.99 from a USB flash drive
Install and Boot Openfiler 2.99 from a USB Flash Drive I have been playing around with ESXi server lately and needed to set up iSCSI shared storage to take advantage of the more complex features. Openfiler 2.99 has received a … Continue read...
Posted in Storage
Tagged boot open filer 2.99 usb, boot open filer from usb disk, boot openfiler 2.3 from usb, boot openfiler 2.99 from usb, how to boot open filer 2.99 from a usb flash drive, how to boot open filer 2.99 from a usb stick, how to install openfiler on a usb flash drive, what is an iscsi target
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