On Fri, 11 Mar 2011 12:57:17 -0500 (EST), Donald Russell wrote: > > But, what are other people doing? My experience so far seems to be > that the choice of SCSI or ECKD depends on the background of the > people making the decision.... people with a s390 background are > familiar with ECKD, people coming from a unix/linux background > are familiar with SCSI..
No-one else has mentioned this; so I will. Don't forget about the DIAG driver (kernel module dasd_diag_mod). You can usually get some performance improvement out of it, as compared with the standard ECKD driver (dasd_eckd_mod) or the standard FBA driver (dasd_fba_mod). I've heard that the performance improvement is even more significant when using emulated FBA devices on SCSI disks. But when using the DIAG driver, one can't use the cdl format. I personally use CMS RESERVED minidisks. They work with the DIAG driver and also work well with standard VM/CMS backup software. -- .''`. Stephen Powell : :' : `. `'` `- ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
