• Isilon Port Usage Below is a table of Isilon port usage and the OneFS services that use them.   Additional detail is available in the Isilon Security Configuration guide on Dell EMC’s support site. Affected Services Port Service Protocol Connection Type FTP 20 ftp-data TCP, IPv4, IPv6 External, Outbound FTP 21 ftp TCP, IPv4, IPv6 External, Inbound SSH 22 … Continue reading Isilon Port Usage
  • Diving 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 look at some WebUI options as well when I get to Snapshots, as well as some additional notes and caveats regarding snapshot management.  I’d highly recommend reviewing … Continue reading Diving in to Isilon SyncIQ and SnapshotIQ Management
  • Using 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 system, if you’re running OneFS v8.0 or higher it offers a much needed performance improvement.  The improvements allow this to be a much more functional tool that can … Continue reading Using the InsightIQ iiq_data_export Utility
  • Best 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 rebuilding of the cache after the expansion and possibly having it enabled on LUNs that shouldn’t, like those with high sequential I/O. It’s hard … Continue reading Best Practices for FAST Cache
  • 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 I schedule Unix or Linux crontab jobs to run at intervals like every five minutes, every ten minutes, Every hour, etc.”?  I’ll … Continue reading Using Cron with EMC VNX and Celerra
  • XtremIO Manual Log File Collection Procedure If you have a need to gather XtremIO logs for EMC to analyze and they are unable to connect via ESRS, there is a method to gather them manually.  Below are the steps on how to do it. 1. Log in to the XtremIO Management System (XMS) GUI interface with the ‘admin‘ user account. 2. Click … Continue reading XtremIO Manual Log File Collection Procedure
  • Isilon Mitrend Data Gathering Procedure Mitrend is an extremely useful IT Infrastructure analysis service. They provide excellent health, growth and workload profiling assessments.  The service can process input source data from EMC and many non-EMC arrays, from host operating systems, and also from some applications.  In order to use the service, certain support files must be gathered before submitting your analysis request.  I … Continue reading Isilon Mitrend Data Gathering Procedure
  • Mutiprotocol VNX File Systems: Listing and counting Shares & Exports by file system I’m in the early process of planning a NAS data migration from VNX to Isilon, and one of the first steps I wanted to accomplish was to identify which of our VNX file systems are multiprotocol (with both CIFS shares and NFS exports from the same file system). In the environment I support, which has … Continue reading Mutiprotocol VNX File Systems: Listing and counting Shares & Exports by file system
  • Generating and installing SSL requests, keys, and certificates on EMC ECS In this post I’ve outlined the procedure for generating SSL requests, keys and certificates for ECS, as well as outlining the process for uploading them to ECS and verifying the installed certificates afterwards.   This was a new process for me so I created very detailed documentation on the process I used, hopefully this will help … Continue reading Generating and installing SSL requests, keys, and certificates on EMC ECS
  • Installing the EMC ECS CLI Package Below is an outline on installing EMC’s ECS CLI package.  Once it’s installed, I have another blog post that outlines all of the ECSCLI commands here. Getting Started Prerequisites: Install Python 2.7.x from https://www.python.org/downloads/. Install Python Requests Package: Versions of ECSCLI prior to 3.x may require a manual install of the python requests package.  When I installed … Continue reading Installing the EMC ECS CLI Package
  • Using isi_vol_copy_vnx for VNX to Isilon data migration For most data migrations from VNX to Isilon EMC recommends that you use the OneFS migration tool isi_vol_copy_vnx. It can often be more efficient than host-based tools (such as EMCopy and Robocopy) because the performance of host-based tools performance is dependent on the network connectivity of the host, while isi_vol_copy_vnx depends only on the network … Continue reading Using isi_vol_copy_vnx for VNX to Isilon data migration
  • VNX Block and File Password Change Procedure Below is the procedure for changing the passwords on a Unified VNX on both the block and file sides. Please note that Changing the Global VNX administrator password can cause communication failures between the Control Station and the array, the issue is documented in emc261195 and is the reason I’m adding this post, I was … Continue reading VNX Block and File Password Change Procedure
  • Matching LUNs and UIDs when presenting VPLEX LUNs to Unix hosts Our naming convention for LUNs includes the pool ID, LUN number, server name, filesystem/drive letter, last four digits of the array’s serial number, and size (in GB). Having all of this information in the LUN name makes for very easy reporting and identification of LUNs on a server.  This is what our LUN names look … Continue reading Matching LUNs and UIDs when presenting VPLEX LUNs to Unix hosts
  • The steps for NFS exporting a file system on a VDM I made a blog post back in January 2014 about creating an NFS export on a virtual data mover but I didn’t give much detail on the commands you need to use to actually do it. As I pointed out back then, you can’t NFS export a VDM file system from within Unisphere however when a … Continue reading The steps for NFS exporting a file system on a VDM
  • Dynamic allocation pool limit has been reached We were having issues with our backup jobs failing on CIFS share backups using Symantec Netbackup.  The jobs died with a “status 24”, which means it was losing communicaiton with the source.  Our backup administrator provided me with the exact times & dates of the failures and I noticed that immediately preceding his failures this error … Continue reading Dynamic allocation pool limit has been reached
  • Using the server_stats command on Celerra / VNX File Server_stats is a CLI based real time performance monitoring tool from EMC for the Celerra and VNX file.  This post is meant to give a quick overview of the server_stats command with some samples on using it in a scheduled cron job. If you’re looking to dive into using the server_stats feature, I’d suggest using the online manual … Continue reading Using the server_stats command on Celerra / VNX File
  • How to reserve a Celerra / VNX NAS share for a single file type or group of file types Several years ago I posted on Celerra/VNX NAS file extension filtering (see here), but didn’t write about file system reservations for specific file types, which is also possible.  You can set up NAS shares so that only the file types you want stored there can be written to the share. In order to do this, first navigate … Continue reading How to reserve a Celerra / VNX NAS share for a single file type or group of file types
  • How to create a clone of a file system on a Celerra or VNX using nas_copy Below are the steps used to create a clone of a file system on a Celerra or VNX.  Cloning can be done to the same data mover, a different data mover on the same array, or to a completely different Celerra or VNX data mover. The source file system needs to be mounted read-only, or … Continue reading How to create a clone of a file system on a Celerra or VNX using nas_copy
  • Using Microsoft’s BranchCache with the Celerra & VNX We recently moved the data from several of our small offices to being hosted at a central regional data center. In one case, a site that formerly had it’s own Celerra for file access was now accessing NAS through a WAN link.  As expected, access to files was much slower.  After doing some research on … Continue reading Using Microsoft’s BranchCache with the Celerra & VNX
  • Creating an NFS export from a file system on a Virtual Data Mover (VDM) When creating a new file system on a virtual data mover, you may have noticed that it can’t be NFS exported from within Unisphere.  From the GUI, file systems associated with a VDM do not appear on the drop down list for NFS exports when you attempt to create one.  I had always assumed that it … Continue reading Creating an NFS export from a file system on a Virtual Data Mover (VDM)
  • Changing the Login banner on a Celerra / VNX File control station If you have a security requirement to change the login screen on operating systems that are accessible via a terminal session, it’s a farily easy change on a Celerra or VNX File control station due to the DART OS being based on Linux.  Simply log in as root and edit the /etc/issue file with vi.  It contains the … Continue reading Changing the Login banner on a Celerra / VNX File control station
  • Using the database query option on Celerra & VNX File commands EMC has added a hidden query option on some of the nas commands that allows you to directly query the NAS database. I’ve tested the ‘-query’ option n the nas_fs, nas_server, nas_slice and nas_disk commands, however it may be available on other commands as well. It’s a powerful command with a lot of options, so … Continue reading Using the database query option on Celerra & VNX File commands
  • Relocating Celerra Checkpoints On our NS-960 Celerra we have multiple storage pools defined and one of them that is specifically defined for checkpoint storage. Out Of the 100 or so file systems that we run a checkpoint schedule on, about 2/3 of them were incorrectly writing their checkpoints to the production file system pool rather than the defined … Continue reading Relocating Celerra Checkpoints
  • Collecting info on active shares, clients, protocols, and authentication on the VNX 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 report. How to list and count shares/exports (by protocol): You can use the server_export command to list and count how many shares you have. server_export server_2 … Continue reading Collecting info on active shares, clients, protocols, and authentication on the VNX
  • Adding 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 would appear to work and allow me to join but would never actually show up on the domain list.  Below is a workaround … Continue reading Adding a Celerra to a Clariion storage domain from the CLI
  • Auto transferring reports from VNX to an IIS web server via FTP I previously posted on how to create a script that monitors your Celerra replication jobs.  I have an intranet web page that is updated daily with many other reports (most of which I’ve posted about here), so I thought I’d add this one to the web page as well rather than having to search through my … Continue reading Auto transferring reports from VNX to an IIS web server via FTP
  • Testing Disaster Recovery for VNX VDM’s and CIFS servers After spending a few days working on a DR test recovery, I thought I’d describe the process along with a few roadblocks that I hit along the way.  We had some specific requirements that had to be met, so I thought I’d share my experiences.  Our host site has a VNX5500 and our DR site has an NS-960, and we … Continue reading Testing Disaster Recovery for VNX VDM’s and CIFS servers
  • Celerra data mover performance and port configuration I had a request to review my experience with data mover performance and port configuration on our production Celerras.  When I started supporting our Celerras I had no experience at all, so my current configuration is the result of trial and error troubleshooting and tackling performance problems as they appeared. To keep this simple, I’ll … Continue reading Celerra data mover performance and port configuration
  • How to scrub/zero out data on a decommissioned VNX or Clariion Our audit team needed to ensure that we were properly scrubbing the old disks before sending our old Clariion back to EMC on a trade in.  EMC of course offers scrubbing services that run upwards of $4,000 for an array.  They also have a built in command that will do the same job: navicli -h … Continue reading How to scrub/zero out data on a decommissioned VNX or Clariion
  • Strategies for implementing Multi-tiered FAST VP Storage Pools After speaking to our local rep and attending many different classes at the most recent EMC World in Vegas, I came away with some good information and a very logical best practice for implementing multi-tiered FAST VP storage pools. First and foremost, you have to use Flash.  High RPM Fiber Channel drives are neighter capactiy … Continue reading Strategies for implementing Multi-tiered FAST VP Storage Pools
  • Adding/Removing modules from a datamover I recently had an issue where a brand new datamover installed by EMC would not allow me to make it a standby for the existing datamovers.  It turns out that the hardware (specifically the number of FC and ethernet interfaces) must match PRECISELY, the number of ports and the slots the modules are installed in have … Continue reading Adding/Removing modules from a datamover
  • VNX Root Replication Checkpoints Where did all my savvol space go?  I noticed last week that some of my Celerra replication jobs had stalled and were not sending any new data to the replication partner.  I then noticed that the storage pool designated for checkpoints was at 100%.  Not good. Based on the number of file system checkpoints that … Continue reading VNX Root Replication Checkpoints
  • Use the CLI to determine replication job throughput This handy command will allow you to determine exactly how much bandwidth you are using for your Celerra replication jobs. Run this command first, it will generate a file with the stats for all of your replication jobs: nas_replicate -info -all > /tmp/rep.out Run this command next: grep “Current Transfer Rate” /tmp/rep.out |grep -v “= … Continue reading Use the CLI to determine replication job throughput
  • Use the CLI to quickly determine the size of your Celerra checkpoint filesystems Need to quickly figure out which checkpoint filesystems are taking up all of your precious savvol space?  Run the CLI command below.  Filling up the savvol storage pool can cause all kinds of problems besides failing checkpoints.  It can also cause filesystem replication jobs to fail. To view it on the screen: nas_fs -query:IsRoot==False:TypeNumeric==1 -format:’%s\n%q’ … Continue reading Use the CLI to quickly determine the size of your Celerra checkpoint filesystems
  • Optimizing Java Memory for Navisphere / Unisphere If you have a CLARiiON system with a large configuration in terms of disks, LUNs, initiator records, etc, you may experience a slowdown when managing the system with Navisphere or Unisphere.  If you increase the amount of memory that Java can use, you can significantly improve the response time when using the management console. Here … Continue reading Optimizing Java Memory for Navisphere / Unisphere
  • Celerra Health Check with CLI Commands Here are the first commands I’ll type when I suspect there is a problem with the Celerra, or if I want to do a simple health check. 1. /nas/sbin/getreason.  This will quickly give you the current status of each data mover. 5=up, 0=down/rebooting.  Typing watch before the command will run the command with continuous updates … Continue reading Celerra Health Check with CLI Commands
  • Easy File Extension filtering with EMC Celerra Are your users filling up your CIFS fileserver with MP3 files?  Sick of sending out emails outlining IT policies, asking for their removal?  However your manage it now, the best way to avoid the problem in the first place is to set up filtering on your CIFS server file shares. So, to use the same … Continue reading Easy File Extension filtering with EMC Celerra
  • A guide for troubleshooting CIFS issues on the Celerra In my experience, every CIFS issue you may have will fall into 8 basic areas, the first five being the most common.   Check all of these things and I can almost guarantee you will resolve your problem. 🙂 1. CIFS Service.  Check and make sure the CIFS Service is running:  server_cifs server_2 -protocol CIFS -option … Continue reading A guide for troubleshooting CIFS issues on the Celerra
  • A guide for troubleshooting CIFS issues on the Celerra In my experience, every CIFS issue you may have will fall into 8 basic areas, the first five being the most common. Check all of these things and I can almost guarantee you will resolve your problem. 🙂 1. CIFS Service. Check and make sure the CIFS Service is running: server_cifs server_2 -protocol CIFS -option … Continue reading A guide for troubleshooting CIFS issues on the Celerra
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