A week back I asked a few questions about DEC's RAID technoly, here's
what I've got:
- Performance: As one would expect, normal read performance and
not-so-good write performance. Seems nobody has made any numerical tests.
- Configurable: no go. Gyula Szokoly said "If you play it by the book, no",
so maybe there are some tricks ??? I've heard about RAID-5 subsystems
which can calculate parity for a new disk 'on the fly'.
- 3rd party disks: A few were using Seagate 9G drives, so it seems possible.
The reason I want to use AdvFS is configurability and performance. I
want to keep all my files in one AdvFS domain (to keep it configurable),
but this is quite a vulnerable setup, as the complete setup has to be
reloaded if one disk crashes.
As the RAID-5 setup seems to take away the good things about AdvFS, I
think I'll pick LSM and mirroring instead.
Thanxs to:
"Edward C. Bailey" <ed_at_pigdog.niehs.nih.gov>
Gyula Szokoly <szgyula_at_skysrv.Pha.Jhu.EDU>
KPOOTS_at_gects.ge.com
alan_at_nabeth.cxo.dec.com
--harald
Harald Lundberg <hl_at_tekla.fi>;Tekla Oy,Koronakatu 1,FIN-02210,ESPOO,FINLAND
tel +358-{0-8879449work,0-8039489fax,0-8026752,11-2418013res,50-5578303mob)
Received on Mon Jun 17 1996 - 10:32:49 NZST