Using Cron with EMC VNX and Celerra
I’ve shared numerous shell scripts over the years on this blog, many of which benefit from being scheduled to run automatically on the Control Station. I’ve received emails and comments asking “How do...
View ArticleBest Practices for FAST Cache
I recently received a comment asking for more information on EMC’s FAST Cache, specifically about why increased CPU Utilization was observed after a FAST Cache expansion. It’s likely due to the...
View ArticleUsing the InsightIQ iiq_data_export Utility
InsightIQ includes a very useful data export tool: iiq_data_export. It can be used with any version of OneFS beginning with 7.x. While the tool is compatible with older versions of the operating...
View ArticleDiving in to Isilon SyncIQ and SnapshotIQ Management
In this post I’m going to review the most useful commands for managing SyncIQ replication jobs and SnapshotIQ snapshots on the Isilon. While this will primarily be a CLI administration reference, I’ll...
View ArticleBlockchain and Enterprise Storage
The biggest value of blockchain in enterprise storage will be what it enables, not what it is. While it has yet to be fully embraced by the enterprise, blockchain is well poised to change enterprise...
View ArticleStorage Performance Benchmarking with FIO
Flexible IO tester (FIO) is an open-source synthetic benchmark tool first developed by Jens Axboe. FIO can generate various IO workloads: sequential reads or random writes, synchronous or...
View ArticleData Domain CLI Command Reference Guide
Other CLI Reference Guides: Isilon CLI | EMC ECS CLI | VNX NAS CLI | ViPR Controller CLI | NetApp Clustered ONTAP CLI | Brocade FOS CLI | EMC XTremIO CLI This is a Data Domain CLI Command...
View ArticleDell EMC Unity Unisphere CLI Command Reference Guide (UEMCLI)
This is a list of syntax examples for using uemcli on a Unity array. It covers system management, networking, host management, hardware, storage management, data protection and mobility, events and...
View ArticleEMC XTremIO CLI Reference Guide (XMSCLI)
Other CLI Reference Guides: Isilon CLI | EMC ECS CLI | VNX NAS CLI | ViPR Controller CLI NetApp Clustered ONTAP CLI | Data Domain CLI | Brocade FOS CLI This is a quick reference guide for...
View ArticleNetApp Clustered Data ONTAP Command Line Reference Guide (CDOT CLI)
Other CLI Reference Guides: Isilon CLI | EMC ECS CLI | VNX NAS CLI | ViPR Controller CLI Data Domain CLI | Brocade FOS CLI | EMC XTremIO CLI This is a comprehensive CLI command line reference...
View ArticleA Roundup of Storage Startups
The enterprise storage market has been a hotbed of innovation and entrepreneurship in the last several years. While the storage industry has consolidated with acquisitions (such as HP’s purchase of...
View ArticleEMC ViPR Controller CLI Command Reference
Other CLI Reference Guides: Isilon CLI | EMC ECS CLI | VNX NAS CLI | NetApp Clustered ONTAP CLI | Data Domain CLI | Brocade FOS CLI | EMC XTremIO CLI This is a comprehensive CLI command line...
View ArticleConfiguring a Brocade Switch for Access Gateway (AG) Mode
What is Access Gateway Mode? Access Gateway mode is useful when you need to add more ports to your fabric without the additional complexity of using additional zoning configurations or additional...
View ArticleHP 3PAR CLI Reference Guide
This is a CLI command line reference guide for HP’s 3PAR OS, and is based on version 3.3.1. It is a complete list of commands and a description of their function, I’d recommend reviewing HP’s official...
View ArticleStorage Performance Metrics
I often get requests from application owners to review storage performance stats. I thought I’d give a quick overview of some of the things I look at, what the myriad of performance metrics in...
View ArticleAutomating VNX Storage Processor Percent Utilization Alerts
Note: The original post describes a method that requires EMC Control Center and Performance Manager. That tool has been deprecated by EMC in favor of ViPR SRM. There is still a method you can use to...
View ArticleAdding a Celerra to a Clariion storage domain from the CLI
If you’re having trouble joining your Celerra to the storage domain from Unisphere, there is an EMC service Workaround for Joining it from the Navisphere CLI. When attempting it from Unisphere, it...
View ArticleFrequent 0x622 and 0x606 errors in the SP Event Logs
During some routine checking of the SP Event logs on our NS-40 I was noticing a large number of alerts. Every few seconds I was seeing these three alerts pop in: 0x60a Internal Information Only. A...
View ArticleCollecting info on active shares, clients, protocols, and authentication on...
This is a reference guide for listing and counting shares, clients, protocol and authentication information, and virus scan information. All of this information could be used for a full VNX audit...
View ArticleClose requests fail on data mover when using Riverbed Steelhead appliance
We recently had a problem with one of our corporate applications having file close requests fail, resulting in 200,000+ open files on our production data mover. This was causing numerous issues within...
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