Tag Archives: 3par

HPE 3PAR Adaptive Optimization configuration demystified

Adaptive Optimization is disk tiering technology within 3PAR OS, which automatically moves the most frequently accessed data blocks to the fastest disks and infrequently accessed data blocks of data to slower disks. I will not try to recite official documentation … Continue reading

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3PAR iSCSI Delayed ACK read or write performance issues

I’ve noticed a few people running iSCSI 3PARs with Delayed ACK enabled and experiencing latency on their datastores. Here’s what happens when you disable it (SSD backed datastore): Before and after: VMware KB about it: https://kb.vmware.com/kb/1002598 I suggest to use … Continue reading

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3PAR with AO and SSDs. How much do I need?

Most of the people involved with storage deal on daily basis with performance and capacity monitoring. There are two metrics which everyone cares the most: size and IOPS. Of course, latency, queue depth and many more have significant impact as well. If you … Continue reading

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3PAR 3.2.2 MU3 and Veeam B&R 9.0 Update 2 – integration bug

Latest 3PAR firmware 3.2.2 MU3 breaks SAN integration with Veeam Backup and Replication. Issue affects all versions, including version 9 Update 2. Symptoms You job will fail with “User authentication failed” error:

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3PAR WSAPI via Powershell

Earlier I’ve demonstrated how to use 3PAR CLI with Powershell. In this example I will show how to work with 3PAR’s WSAPI via Powershell and poll last time remote copy group was synchronized (i use Last Sync date from first … Continue reading

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3PAR remote syslog

To view current config for remote syslog showsys -param cli% showsys -param System parameters from configured settings ——Parameter—— –Value— RawSpaceAlertFC : 0 RawSpaceAlertNL : 0 RawSpaceAlertSSD : 0 RemoteSyslog : 0 RemoteSyslogHost : 0.0.0.0 SparingAlgorithm : Default EventLogSize : 3M … Continue reading

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3PAR real free space

Today browsing one of my favorite 3PAR related websites (3parug.com) I came across topic asking for a “real” free space. I assume someone is trying to find out how more of the actual data he/she can fit before running out of … Continue reading

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HP 3PAR Layout Grid Manager

Chunklet is not a secret for everyone involved with 3PAR Inform OS. In short, a chunklet is a 1GB block of data. By default a 3PAR array will devide all physical disks in multiple chunklets of 1GB. Have you ever wanted to visualize … Continue reading

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3par Powershell Example

HP has amazing product called 3par but it’s definitely lucking some features on add-on software side. One of the products HP offers is called HP 3PAR Recovery Manager Software for Microsoft SQL Server (RM-SQL). Purpose of this software is to … Continue reading

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