Archive for August, 2015

Information Experience “Ask the Expert” follow-up

Risa Galant

Risa Galant

Principal Technical Writer at EMC Isilon Storage Division
Risa Galant

Latest posts by Risa Galant (see all)

Thank you! The Ask the Expert session featuring the EMC Isilon Information Experience team was a lively exchange. It was great to share experiences and ideas about Isilon content with you. In this follow-up post, we’ll update you about what actions we’re taking based on your suggestions.

Finding just what you need, quickly

One item that came through loud and clear is that we produce a lot of dense information about Isilon products. Those of you who manage several EMC platforms can get inundated, and sorting out what’s important from what can wait can be quite a task. We should make it a lot easier and faster for you to find just what’s relevant to you. We’ve created a proposal for doing that which is now in review.

Cool Commands videos

Thanks for the great ideas for the new Cool Commands video series.  The first batch of videos will cover broad commands, and you’ll see more specific commands like isi statistics covered in subsequent videos.

When in doubt, script with the OneFS API

Command line interface (CLI) commands can change from release to release and that can be a source of concern. We have the answer for you: the OneFS Platform API (PAPI). Even if the underlying CLI commands change for a particular release, PAPI scripting will be consistent from release to release. Check out the OneFS API Info Hub and OneFS Uptime Hub for information about getting started.

New! Updated! Lookie!

Oh yes, those New! and Updated! tags on our Info Hubs can be distracting. Special notices can really clutter up the content, too. You let us know that if tags and notices are left up for too long, they can be confusing. So we’ll remove New! and Updated! tags after 2 weeks and remove notices as soon as they’re no longer relevant.

Tell us more

Your feedback is invaluable – don’t be shy about letting us know about your experience accessing and using EMC Isilon technical content. Email us at with your feedback. And thank you!

Introducing the Isilon API Info Hub

Risa Galant

Risa Galant

Principal Technical Writer at EMC Isilon Storage Division
Risa Galant

Latest posts by Risa Galant (see all)

Would you like to automate routine Isilon cluster administration tasks? Maybe you need a custom tool to monitor your cluster, or your cluster administrators would like a nice, tidy script to allow them to consistently and securely perform operations on files and directories. If you’re looking for resources to help you do any or all of these things, we have just the place to get started: the Isilon API Info Hub.

The brand-new Isilon API Info Hub is your one-stop shop for information about getting and using the OneFS API. Use the OneFS Platform API (PAPI) to automate configuration, management, and monitoring of tasks, and to build scripts to allow your cluster administrators to securely perform operations on your Isilon cluster’s files and directories.

Isilon API Info Hub resources

The Isilon API Info Hub collects resources such as:

  • Code samples
  • Advice from Isilon API experts
  • Links to related ECN discussions
  • Links to the Isilon OneFS Platform API documentation

And much more.

How PAPI works

You can access PAPI through a Representational State Transfer (REST) interface, which is composed of URIs and standard HTTP methods. That means that you can manage cluster resources using HTTP methods such as GET, POST, PUT, and DELETE. OneFS and PAPI exchange the representations of objects and collections as JSON-formatted documents, so they’re platform- and programming language-independent. When PAPI sends a request to OneFS, the request is authenticated and then authorized through role-based access control (RBAC). When the request is approved, you got access, baby, and the requested operation proceeds.

Well, if you’ve enabled HTTP on your cluster, that is. PAPI relies on HTTP to function correctly. Be sure that HTTP is enabled on your cluster so that your scripts work.

Check out the Isilon API Info Hub and be sure to let us know what you think. And check out the Isilon Uptime Info Hub for technical information about Isilon products and related real-world problems and solutions, including best practices for scripting with PAPI. Happy scripting!

New EMC Isilon customer support content for July 2015

Risa Galant

Risa Galant

Principal Technical Writer at EMC Isilon Storage Division
Risa Galant

Latest posts by Risa Galant (see all)

Check out new EMC Isilon customer support content published in the month of July. Each month I’ll post a summary of newly published content for Isilon customers, as well as the top 10 most viewed knowledgebase articles.

New Isilon customer support content

Here are links to new EMC Isilon customer support content that was published in July 2015. Enjoy!


LINK and Description

ClusterTalk Podcast Episode 5: Streaming music, saving the bees, what Big Data reveals about wildfires and landslides, guest data scientist Collette Gantenbein, and more!
Cluster Talk Podcast Podcast: Cluster Talk Hub: Looking for all the Cluster Talk podcasts? You’ll find them here.
Isilon Community (ECN) Blog OneFS and Virtual Hot Spares
Video Decode the Node: A Tour of the EMC Isilon X210 (ID.TV): Learn about the new EMC Isilon X210 node including its specifications, connection points, and internal components.
Video Decode the Node: A Tour of the EMC Isilon NL410: Learn about the new EMC Isilon NL410 node including its specifications, connection points, and internal components.
Video Node and SSD Compatibility in OneFS 7.2 and OneFS 7.2.1: Learn how to create node class compatibilities and SSD compatibilities in OneFS. These features enable you to combine different types of nodes into the same node pool.
Info Hub OneFS 7.2.1 Documentation – Isilon Info Hub: the place to find OneFS 7.2.1 content, from what’s new to product documentation to 7.2.1-specific blog posts and videos.

Most viewed Knowledgebase articles

  1. ETA 199379: Isilon OneFS: Security update MS15-027 may cause data to be unavailable to SMB clients that are authenticated to Isilon clusters through an Active Directory server that relies on the NTLM authentication protocol (199379)
  2. Product Impacts of Upcoming Leap Second UTC adjustment on June 30th 2015 (197322)
  3. ETA 203815: OneFS – and – Isilon NDMP snapshot-based incremental backups may omit new and changed files (203815)
  4. OneFS SMB and Authentication Rollup Patches (196928)
  5. OneFS: How to reset the CELOG database and clear all historical events (16586)
  6. ESA-2014-146 (193304)
  7. ESA-2015-093 (202878)
  8. OneFS: How to safely shut down an Isilon cluster prior to a scheduled power outage (16529)
  9. How to collect node information, including log files (16763)
  10. ETA 193819: EMC Isilon nodes: Mars-K+ drives may stop responding and be automatically smartfailed from Isilon nodes (193819)

EMC Isilon OneFS 7.2.1 is available!

Risa Galant

Risa Galant

Principal Technical Writer at EMC Isilon Storage Division
Risa Galant

Latest posts by Risa Galant (see all)

EMC Isilon OneFS 7.2.1 release has some great new and updated features that provide benefits on both the hardware and software side, including:

  • Security Technical Implementation Guide (STIG) configuration support
  • FIPS OpenSSL support
  • CAC/PIV authentication
  • Enhanced IPv6 support
  • Enhanced Swift support
  • Global namespace acceleration and L3 cache interaction
  • New node and SSD class compatibility support

In addition, the upgrade requirements for OneFS 7.2.1 differ from previous releases. This post highlights some of the new capabilities and upgrade requirements.

For more technical information about all of the new OneFS 7.2.1 features and enhancements, refer to the following documents:

New features

The following new features are included in OneFS 7.2.1.

Hardened profiles: Security Technical Implementation Guide (STIG)

If your site requires compliance with the Defense Information Systems Agency (DISA) STIG configuration standards, you’re in luck! OneFS 7.2.1 introduces a license-based security hardening feature through which you can apply and revert a hardening policy on the EMC Isilon cluster to meet DISA STIG configuration standards.

Networking:  enhanced IPv6 support

You can configure your cluster to accept client connections through both IPv4 and IPv6. OneFS adds dual-stack support to enable your cluster to support IPv4 and IPv6 client connections concurrently. And, OneFS 7.2.1 also supports IPv6-only environments.

Note that HDFS, InsightIQ 3.1 and earlier, MMC, NIS, and Swift are not supported over IPv6.

OneFS API: enhanced Swift support

Isilon Swift is now supported with the HTTP and secure HTTP (HTTPS) protocols over IPv4.

Isilon Swift supports the HTTP protocol with IPv6, but does not support HTTPS with IPv6. Isilon Swift also supports the HTTP protocol with IPv4 if STIG hardening is disabled.

File system: Global namespace acceleration (GNA) and L3 cache interaction

OneFS 7.2.1 includes some changes to how storage space calculations work when GNA and L3 cache are both enabled in the same cluster.

In OneFS, you can use solid-state drives (SSDs) for strategies such as GNA mirroring or for L3 cache. GNA mirroring enables data on node pools that do not have SSDs to have additional metadata mirrors on SSDs elsewhere in the cluster. The additional SSD metadata mirroring can improve file system performance by accelerating metadata read operations.

In OneFS 7.2.1, GNA requires that at least 20 percent of the nodes in the cluster contain at least one SSD, and that at least 1.5 percent of the total cluster storage is SSD-based. Any SSDs that are used for L3 cache are not counted against the GNA requirements: with GNA enabled and with L3 cache configured for a pool, the nodes in the pool with L3 cache configured become invisible to the GNA calculations. This change helps to ensure equitable and fair calculations when L3 cache and GNA are enabled in the same cluster.  For more information, see the OneFS 7.2.1 Release Notes and the OneFS 7.2.1 CLI Administration Guide.

Hardware: Node class compatibility

You can deploy a newer-generation node to a cluster that contains nodes from an earlier generation of the same class. For example, if your cluster already has a node pool that consists of Isilon X200 nodes, you can define a compatibility that enables you to add an X210 node to the same node pool. OneFS 7.2.1 supports compatibilities for S200/S210, X200/X210, X400/X410, and NL400/NL410 nodes. Compatible node generations must have identical HDD and SSD layouts and must have a compatible memory configuration. See the OneFS 7.2.1 Release Notes for details.

SSD compatibility

SSD compatibility enables you to add nodes with different capacity SSDs to the same node pool. For example, if your cluster has a node pool that consists of Isilon S200 nodes with 100 GB SSDs and you purchase new S200 nodes with 200 GB SSDs, you can create an SSD compatibility so that the new S200 nodes can be provisioned into the existing S200 node pool. For nodes of different generations—for example, S200 and S210 nodes – you might have to create a node class compatibility and an SSD compatibility to enable the S210 nodes to be provisioned into an S200 node pool.

Support for new platforms

OneFS 7.2.1 provides support for two new platforms: the X210 and the NL410. These nodes support node class compatibility. X210 nodes can be added to existing X200 node pools, and NL410 nodes can be added to existing NL400 node pools.

How to upgrade to OneFS 7.2.1

You can upgrade directly to OneFS 7.2.1 only from OneFS or later, or from OneFS or later. For more information, see Upgrade Paths to OneFS

If you want to upgrade to this new release, explore your upgrade options by reviewing the Isilon Supportability and Compatibility GuideThen, prepare for the upgrade process by reviewing the following documents:

When you’re ready to upgrade, download the OneFS installation file from the Download section of the EMC Online Support site.