What is your opinion of placing the DB2 database on a DS8300 or any other high end SAN? (RAID 5 only, all 15K drives) parity write overhead. Is it possible to access both a DS-4200 and a DS-8300 from the same pair of FC cards? Different multipath drivers.
-----Original Message----- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Remco Post Sent: Sunday, December 21, 2008 3:26 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: 5.4 --> 6.0 (server) On 21 dec 2008, at 08:56, Gee, Norman wrote: > I guess with the rumor conversion to DB2, it would no longer be > feasible > to place the database on JBOD mirror by TSM. The recommendation may > be > RAID 5 or 6 storage with fibre channel disks and not SATA disks. Am I > close? Well, even with current TSM levels I would only use 15kRPM disks in RAID1. DB2 has no software mirroring, but your OS might very well do the job for you, I know that Linux and AIX can, and I think recent windows levels can do the same. RAID5 or RAID6 are great technologies, but I don't believe that they mix very well with high performance databases, not for TSM <= 5.5, and not for DB2 either. SATA disks are only useful in very small TSM environments (up to a few gig database), and well, that wont change much with DB2. -- Met vriendelijke groeten/Kind regards, Remco Post, PLCS +31624821622