>Hello,
>
>I'm not new to system administration, but I am new to OSF/1,DEC Unix.
>
>I need to implement disk mirroring on a pair of Alpha servers that
>currently have the ADVFS file system on them. What is the DEC analog
>to Online Disk Suite, and where in the online books is the
>documentation?
> I tried man -k on mirror and a find for "mirror" on the Layered
>Products CD to no avail.
>
>Is using mirroring and ADVFS a stable combination?
It would be more that it's the only stable combination with ADVFS.
>
>I've inferred from threads here and colleagues that the ADVFS is not
>totally "ready for prime time" and can be unstable under some
>circumstances. Is that so?
>
Summary
1) ADVFS and Mirroring using the advanced version of LSM not only work well
together, but they are pretty close to mandatory if your're going to retain
your sanity;-)
2) ADVFS has performance problems when storing lots of little files, but
that can be improved considerably by frequent use of the online
defragmenter, and setting a large size for the metadata extent.
3) Most of the "bad rap", to the extent it exists, against ADVFS is caused
because the filesystem is touchier than UFS filesystems to hardware disk
problems, and disk problems frequently create system crashes.
4) LSM mirroring can let you "ride out" such hardware problems and keep
you running when an unmirrored ADVFS would crash and burn.
5) LSM documentation should be in the System Management Volume.
I think I've got it now, but if any of the folks who replied want to
clarify anything feel free to email.
Thanks to the following....
Michel Cyr
SIDOCI enr.
IST-Integration inc.
(514)252-4333 ex 258
Michel.Cyr_at_sidoci.qc.ca
j_dubois_at_decintrnt.digital.ca
alan_at_nabeth.cxo.dec.com
Mike Matthews, Mike_Matthews_at_sgate.com (NeXTmail accepted)
+---------------------------+tm Paul E. Rockwell
| | | | | | | | UNIX Sales Support Consultant
| d | i | g | i | t | a | l | Digital Equipment Corporation
| | | | | | | | 500 Enterprise Drive
+---------------------------+ Rocky Hill, CT 06067
Internet: rockwell_at_rch.dec.com Phone: (203)258-5022
Regards,
Marc Mason
mamason_at_ix.netcom.com
Unix System Administrator
The Computer Merchant/World Bank
Received on Wed Aug 16 1995 - 23:48:13 NZST