altavek's picture

Missing LUNs on XRAID

I've got 2 LUNs on the top controller that are not showing up in XSAN admin and even Disk Utility. I've reset the RAID controller, checked all cables, cleaned all dust out of the connections on the mid-plane board, repaired the LUN map, renamed them to something other than what they were previously named, even swapped the controllers. I can see them in RAID admin and nothing is reporting an error.

Any help would be greatly appreciated. Thanks!

francisyo's picture

Antivirus on MDC's and Clients

Hello guys,

Is it advisable to install Antivirus for Mac on our Xsan servers(MDC) and clients? I just want to scan xsan volumes for viruses. Is it recommended? I haven't tried it and just want to know your opinion on this matter. And for those people who have experiences on antivirus on xsan please do share. Thanks

abstractrude's picture

Quantum Stornext 4.3 Released. Supports Named Streams.

The most relevant section of the press release

"For Mac OS X only-based StorNext File System environments, StorNext 4.3 now supports Named Streams. StorNext 4.3 enables simpler hardware upgrades and disaster recovery. With the ability to migrate file system metadata stored on the metadata controller to a different disk geometry, the software allows customers to take advantage of new drive capacities and technologies."

More after the break....

kaeddong's picture

xsan 2.2 admin guide leads to questions about.

xsan 2.0 admin guide looks at man Xsan Capacities "Number of computers on a SAN (metadata controllers and clients) Maximum 64" manual on the appearance of 2.2 or 2.3 I can not see in the manual.
Each version is not limited?
  If there is a limit to how much the maximum you're telling me.<

mrtubz's picture

NDMP Backups or Better

Hi All

We have recently implemented a BlueARC NAS device with 60TB of storage and have a Dual LTO 5 tape library. The BlueARC supports NDMP backup and from a post on your knowledge base you are not looking to implement NDMP in your software in the future. My question really is what would be the best way to get the full potential from the LTO drives when using Presstore?

I currently have a Trunked 4Gb link to our switch and 10GB to our NAS device, the Tape Library is connected over 4Gb Fibre, but I very rarely get above 5% buffer on the tape device, so the drives are obviously not being fed quickly enough. I have a client with the same setup but Atempo Time Navigator running NDMP and they get a significantly higher throughput to their drives.


MadMacs77's picture

xsan client mds errors

I have 2 [i]Lion/i MDCs and 5 [i]Snow/i clients.
The below errors are showing up on the Snow clients.

7/6/12 11:20:27 AM[52] XSANFS_FSCTL_SpotlightRPC fsctl failed (errno = 45)ERROR: _MDSChannelInitForXsan: _XsanCreateMDSChannel failed: 45
7/6/12 11:20:27 AM mds[52] (Error) Message: MDSChannel RPC failure (fetchPropertiesForContext:) [no channelAccessToken]
7/6/12 11:20:27 AM[52] ERROR: _MDSChannelXsanFetchAccessTokenForUID: dead channel
7/6/12 11:20:27 AM mds[52] (Error) Store: {channel:0x101a41500 localPath:'/Volumes/Media'} bring up failed -- will retry

Spotlight on the clients is set to ignore the "Media" volume, and I turned off Spotlight for the volume in Xsan, but these errors persist and they're filling up log files.

Promise VTrak: RAID Head - Xsan (Metadata, Journal, and Data) (Apple KB)

This article contains a script used to configure Promise VTrak RAID controllers for Xsan (Metadata, Journal, and Data).

Read more:

Promise VTrak: RAID Controllers and SAS-connected Expansion Chassis: Xsan (Metadata, Journal and Data) (Apple KB)

This article contains a script used to configure Promise VTrak RAID controllers with SAS-connected Expansion Chassis for Xsan (Metadata, Journal, and Data).

Read more:

kworq's picture

Mountain Lion drops support for xserve 2008


I was in the middle of acquiring components to use in a new xsan build. 2 of which are 2x 3.0Ghz xserve (2008) for MDC. But there are unconfirmed list of dropped computers in Mountain lion and they are on the list. I dont think I would build a production xsan with the brand new os/xsan 3 but if there is never the option too upgrade show I look at getting newer MDC? I looked at the mac mini but its geek bench score was lower then the 8 core 2008 xserve.

fadi's picture

config files in Library/Filesystems/Xsan/ are DELETED.HELP!!

Crashing in Xsan Volume suddenly 3 day ago, until now cannot MOUNT the VOLUME .
all the files & folders in Library/Filesystems/Xsan/ are deleted

tried to verefied the volume from Disk Utility .. but every time the same error ( partition map check failed because no slices were found )

unfortunately have no backup, and i can't lose the DATA on volume it's very important .

1- G-Technology - G-speed FC XL 12 TB
2- Using Raid 5 +1 + hot-spair
3- Q-Logic 1400 Fiber switch 10 Ports
4- Apple Fiber Channel Card
5- a (One) MDC MAC pro 2x2.26GHz QUAD-CORE - INTEL 0
b 6G MHz RAM DDR 3
c Mac OS x server LION 10.7
e Xsan V.2.3


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