![]() Whether using Server.app in the good old days or cvlabel to label your LUNs now you should all be familiar with the command to list available LUNs. It’s much easier to label new LUNs than stare at a broken production SAN that has lost its labels. Well, it’s not that hard but it can be intimidating the first few times. But since we are now hardcore SAN architects we can use Terminal and the cvlabel the command to do this the hard way. Normally after we create RAID sets in the hardware raid utility we would open up Server.app and label the LUNs for Xsan use. RAID5/6 for the data LUN and RAID1 (mirror) for the metadata LUN. Once the drives are in the raid we have to make raid sets which become LUNs for Xsan. ![]() Not only a great movie it’s the central part of this production media network for creatives. Ok, how do we do that? Remember that raspberry Pi you bought yourself for Christmas but never opened because you have been so busy and well you know life. Download the Accusys Mac installer on your Intel Mac (M1 is not supported with the T-Share yet as of this blog post). One group of larger disks for a data LUN (main production storage) and two smaller disks for a raid mirror to be used as metadata storage. With the Accusys T-Share I just have to plug in some clients with a Thunderbolt 3 cable. Raspberry Pi 400 (the amazing linux computer shaped like a keyboard). It’s a raid with Thunderbolt switch built in. What do we do? Apple published a very nice handy guide about how to build Xsan in Terminal. Xsan is there in Server.app if you upgrade to macOS Big Sur but when you install Server on a clean macOS there is no Xsan visible in the app. It turns out that Xsan’s disappearance in Server.app to not be totally correct). ( Note: This is what I was told early on and what seemed to be confirmed by Apple’s recent Xsan cli guide. Apple did a major upgrade of Xsan (now version 7!) in macOS 11 Big Sur but apparently they took out the Xsan config in Server.app. Xsan can be shared by a small or media sized team of editors, producers and assistants. Fibre channel or Thunderbolt with a big enough raid behind your SAN then life is great. NAS at 10GbE is much better but still has road blocks for editors. Network attached storage (NAS) at 1GbE is barely usable. Why? Why are we doing this? Nothing beats fibre channel or Thunderbolt SAN speed for editing. Download Server.app from the Mac App Store and make your Xsan. Want large fast storage made for Final Cut Pro editors, just add Xsan. Xsan is Apple’s fork Quantum’s StorNext SAN software. Just a little bit of peril It’s not too perilous, don’t worry.Īpple includes Xsan for free in macOS. ![]() You can build a useful Thunderbolt based Xsan with a little bit of effort. If you don’t have a fibre channel switch and fibre channel hardware RAIDs do not worry. A ton of example files: /System/Library/Filesystems/acfs.fs/Contents/examples/Ĭvlabels.example fsnameservers.example rasexec.exampleĬvpaths.example fsports.example rvio.exampleįsmlist.example nss_cctl.example snfs_metadata_network_ Just the facts. Besides binaries, what else is there? Examples. Lots of interesting cv (CentraVision) and sn (StorNext) commands in macOS (this list is from 10.15 Catalina). Xsan Commands: where are they? /System/Library/Filesystems/acfs.fs/Contents/bin cvlabel sncfgremove This blog is for entertainment and occasional learnings. Read the man pages, search the web, read some help documents. Important commands for using Xsan have always been cvadmin and cvlabel (cv is short for centravision the original creators) but more recently xsanctl and slapconfig are important for creating the SAN and the OD (Open Directory) environment. ![]() I wish it were that easy! Stick around for the two or three commands you do need. Destination adventure with family fun, next stop a blinking cursor on a command line prompt. It’s the journey that counts, right? One nerd’s journey to make an Xsan with macOS 11 Big Sur cli. And a new challenge: can we build Xsan only using Terminal? No apps. What’s different now? New year, new macOS. I’ve written about the Accusys T-share in 2020 (and in 2015 when I first found this cool tech).
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