Kalau menggunakan RAID, sebaiknya penerapan ASM-nya menggunakan EXTERNAL REDUNDANCY, maksudnya mirroring-nya externally via RAID. Jadi tidak "double" mirroring (RAID + ASM).
ASM sendiri pada dasarnya seperti file-system pada umumnya(FAT, FAT32, NTFS, ext2, ext3, HPFS etc). Tapi hanya bisa digunakan oleh Oracle sahaja (untuk menyimpan Oracle files, spt: datafile, controlfile, redolog files, backup files, ...) Bowo --- In [email protected], "irwan" <[EMAIL PROTECTED]> wrote: > Sebelumnya terima kasih atas penjelasan Pak Bowo > Maaf crewet lagi, maklum newbie > > Apakah I/O tidak akan lebih "sibuk" bila menerapkan ASM diatas RAID? > bila dibanding menggunakan ASM-saja atau RAID-saja? > > > > > ----- Original Message ----- > From: Yulius Wibowo > To: [email protected] > Sent: Monday, August 22, 2005 13:28 PM > Subject: [indo-oracle] Re: RAW DEVICES - OCFS - ASM > > > 1. RAW : Partition tanpa format/file system. > - Keuntungan : relatif lebih cepat dibandingkan dengan file system, > karena tidak menggunakan buffer dari file system (direct) > - Kerugian : satu raw device (HD partition) hanya bisa dipakai oleh > satu buah file, dan tidak bisa di auto extend. Jadi kalau datafile yg > anda manage "banyak" dan semuanya menggunakan raw device maka ... > > 2. OCFS (Oracle Cluster File System) > Sebuah file system yg dikembangkan oleh Oracle utk clustering. > Support utk RAC (Real Application Clustering). Sekarang sudah keluar > release 2 dan free. > > 3. ASM (Automatic Storage Management) > Menyatukan "file system" dan "volume manager" yg dikembangkan oleh > Oracle dan hanya bisa dipakai untuk menyimpan Oracle Files sahaja ! > (Datafile, controlfile, redologfile ... and backup file) > ASM = Diskgroup + diskgroup + ... > Diskgroup = Disk + Disk + Disk + ... > Disk = RAW Device > > Mulai ada semenjak Database 10G. Jadi nggak bisa dipakai oleh > instance 9i atau yg lebih rendah. > > Sama halnya RAID, tapi dilevel software. > > ASM bisa menggunakan existing RAID (hardware) yg ada. > > ASM bisa diconfigure utk redundancy (mirroring, spt di RAID) > > CMIIW > > Bowo > > > > > > > Untuk me-Manage Oracle File > > > > > > > --- In [email protected], "irwan" <[EMAIL PROTECTED]> wrote: > > Boleh tambah satu poin pertanyaan lagi ga pak Agus :-) > > > > Bagaimana bila kita dihadapkan dengan pilihan : Pilih ASM atau > Raid? > > dimana kita sudah memiliki hardware dengan RAID dengan nilai > investasi yang tidak sedikit. > > Apakah Raid ini di abaikan saja? > > > > > > ----- Original Message ----- > > From: SETIJO AGUS > > To: [email protected] > > Sent: Thursday, August 18, 2005 15:27 PM > > Subject: [indo-oracle] RAW DEVICES - OCFS - ASM > > > > > > Adakah yang bisa membantu menjelaskan RAW DEVICES - OCFS - > ASM ?, kelebihan > > dan kekurangannya ? > > kalau disuruh memilih pilih yang mana RAW DEVICES - OCFS - ASM ? > > > > terima kasih sebelumnya > > > > > > -- > > -----------I.N.D.O - O.R.A.C.L.E--------------- > > Keluar: [EMAIL PROTECTED] > > Website: http://indo-oracle.lizt.org (NEW) > > ----------------------------------------------- > > > > Bergabung dengan Indonesia Thin Client User Groups, > > Terminal Server, Citrix, New Moon Caneveral, di: > > http://indo-thin.vze.com > > > > > > > > SPONSORED LINKS Database development software Database > management software Database software > > Inventory database software Membership database software > Citrix terminal server > > > > > > ---------------------------------------------------------------- ---- > ---------- > > YAHOO! 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