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Conference smurf::ase

Title:	ase

Moderator:	SMURF::GROSSO

Created:	Thu Jul 29 1993
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	2114
Total number of notes:	7347

1961.0. "RAW disk failover supported or not supported ?" by SIOG::JORDAN () Wed Mar 19 1997 10:10

    Hi,
    
    A customer of ours is using TruCluster Available Server V1.3 on
    Digital UNIX 3.2g. He is configuring Sybase which uses RAW partitions
    on the cluster. LSM is used for disk mirroring.
    
    The question of whether the configuration is SUPPORTED or NOT SUPPORTED
    from an MCS perspective has come up. Does the Digital components of
    this solution i.e TRUCLUSTER ASE support the failover of RAW devices.
    
    We know that
    
    	1) Yes, the product can me made to failover RAW devices by
           including them in the DISK service along with the SYBASE
    	   binaries.
    
    	2) Numerous customers have done this before with SYBASE and
    	   one of them is a reference site for the product.
    
    	3) TRUCLUSTER Production Server supports Distributed Raw Devices
           but because Sybase does not use this feature, it would still
           access the raw partitions in the same manner as in ASE.
    
    So the question remains. Does the product support the failover of RAW
    devices. By support we mean that the customer would like to be assured
    that an IPMT could be raised if any bugs are found relevant to the
    failover of raw disks.
    
    Can anyone please comment.
    
    
    Many thanks
    
    Brian

T.R	Title	User	Personal Name	Date	Lines
1961.1	Raw devices are supported in ASE	NETRIX::"[email protected]"	Steve Hancock	`Wed Mar 19 1997 12:04`	16
	As far as I know, raw devices are supported for failover in ASE and therefore would be subject to be IPMT'ed by the CSC should a bug requiring a patch/fix be found. As a CSC focal for ASE and Trucluster, I am confident it would be worked. I do not speak for USEG, so the question of whether or not the IPMT would be accepted and worked, needs to be commented on by someone in that organization (Rob Marshall, are you listening?). Steve Hancock Digital UNIX Kernel Support Atlanta CSC [Posted by WWW Notes gateway]
1961.2	Yes, raw disk services are supported	NETRIX::"[email protected]"	Gregory P. Myrdal	`Wed Apr 02 1997 13:57`	8
	Yes, raw disk services are supported. When creating a DISK service one can specify NONE as the mount point. The assumption is that some application is writing to the disk instead os using a filesystem. This we support in the current Available Server product (which is included in the Production Server product). -- Greg [Posted by WWW Notes gateway]