MattG's picture

Xsan Quick-Reference Guide now available...

I figure since I _don't_ receive royalties, I can plug the book.

The Xsan Quick-Reference Guide is a compendium of handy information, processes and guidelines to set up an Xsan system. It is one of the standard texts we use in the Xsan for Pro Video class. It was written by my co-teacher Adam Green and myself.

You can now purchase the book direct from Peachpit (and at a discount) at:

[url]http://www.peachpit.com/bookstore/product.asp?isbn=0321369009&rl=1/url

Cheers,
Matt

aaron's picture

Xsan Specification Example

Over at AFP548.com, maccanada has posted a well-written article for how to spec out a small Xsan, with three SD and one HD edit stations.

ron's picture

News from NAB 2005

Some early news from NAB regarding Xsan.

Xsan 1.0.1 will be released soon and will be compatible with OS X 10.3.9

Xsan 1.1 will be released in May and will be a free update to all Xsan version 1.0 and 1.0.1 owners.

Version 1.1 will run on Tiger and Panther (10.3.6 or later)

Version 1.1 will ship with a "tuning" utility.

aaron's picture

Xsanity Defrag 1.0 released

We're happy to announce the release of our home-grown Xsanity Defrag 1.0. This application is a GUI wrapped around the snfsdefrag command-line tool, allowing you to defragment your Xsan volumes and storage pools.

We'll be providing support for Defrag in a special forum on this site. We welcome all suggestions!

MattG's picture

Qlogic 5.0 firmware released...

Forums: 

Qlogic switches now run on 5.0 firmware, which rolls in all fixes for older (66Mhz) Apple (LSI) HBAs, and provides a built-in web interface as well as a new GUI.

All current Xsan implementations using Qlogic switches should be upgraded to version 5.0, and any new implementations should get the firmware upgrade as well.

Downloads are free and are available at:

SANbox 5200 / 5202: [b][url]http://www.qlogic.com/support/product_resources.asp?id=540/url/b

SANbox 5600 (4Gb): [b][url]http://www.qlogic.com/support/product_resources.asp?id=929/url/b

SANbox 2-64: [b][url]http://www.qlogic.com/support/product_resources.asp?id=360/url/b

Cheers,
MattG

joannou's picture

Xsanity Defrag 1.0 Available

[img]http://www.xsanity.com/images/XsanityDefrag.png/img

[url=http://www.xsanity.com/easyfile/file.php?show=20050415161123476]Download Xsanity Defrag 1.0/url

Xsanity Defrag runs the command line utility, snfsdefrag (the Xsan File System Defrag Utility that ships with Xsan), to defragment files on Xsan volumes or storage pools.

Open files or files that have been modified in the past 10 seconds are not defragmented. If a file is modified while defragmentation is in progress, defragmentation will stop and the file will be skipped.

Xsanity Defrag will run only as superuser. It is recommended that Xsan volumes to be defragmented be unmounted on all client computers before defragmentation.

THE SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES AND/OR CONDITIONS OF MERCHANTABILITY, OR OF FITNESS FOR A PARTICULAR PURPOSE.

xadrdm's picture

Poor Network Throughput

Forums: 

I have a mixed Xsan environment. One of our storage pools serves as a standard repository for our editors (2 x 2.5 TB Xraid) which our true Xsan clients. The other storage pool (1 5.6 TB Xraid) serves the rest of the office via a NAS device - an Xserve. On the NAS I have 2 fliber links to the Xsan and a Small Tree 4 port Gigabit Ethernet card configured as one Trunk (via link aggregation). We have about 10 artists hitting the NAS as well as 22 render machines (10 pc's, 12 cluster macs). For some reason, I cannot get more than 10 MB/sec sustained transfer rate when everyone is accessing the NAS.

Here's some of the things we've tried:
1) Turned off encryption
2) A Single machine can get 50-60 MB/sec sustained, but when all machines are accessing the NAS, total throughput drops to 10 MB/sec for everyone.
3) We've had our render farm use the 4 port trunk, and our artists access the NAS via the built in single GigE port. Even though there is little traffic on this port, throughput is still just as bad.
4) When using the "top" command in the terminal or the activity monitor on the server, or even the CPU usage from the Server Admin, it appears that CPU usage on the NAS is around 90% for AppleFileSharing.

Thanks in advance for any suggestions.

Andrew Heimbold
Reality Check Studios Inc.

whack's picture

Block/Stripe Breadth Settings

While I can find out the bandwidth a video format uses to dertermine how many raid controllers etc I need, I cannot find what is required to be able to set block or stripe breadth in xsan.

I gather that this is based upon frame size and that data is written to disk by frame. Am I correct?? If a frame is say, 128Kb and I have four LUN's I would devide the frame by four and set this as the block size...am I warm?

Any help would be welcome.

Thanks

csoto's picture

Dell/EMC AX100 units

Forums: 

These look rather promising for datacenter use, as they provide true multipathing for failover. Anybody try them, using Xsan or otherwise?

tnoe's picture

Using Xsan in an Avid enviroment

Thomas Wolf describes why Avid and Xsan can't work together, and then explains how his company came up with a solution.

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