Linux Storage system: looking for advices Post: 302384141

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Special Forums Hardware Filesystems, Disks and Memory Linux Storage system: looking for advices Post 302384141 by pludi on Monday 4th of January 2010 06:35:11 AM

01-04-2010

Registered User

My approach would be to partition the disks in similar sized partitions, and create RAID1/RAID5 across them, and then use LVM to collect them as 1 device. Example with 4 disks:

Code:

+----------+
| 1TB      | Disk 1, 1 TB
+----------+
+----------+-----+
| 1TB      |.5TB | Disk 2, 1.5 TB
+----------+-----+
+----------+-----+
| 1TB      |.5TB | Disk 3, 1.5 TB
+----------+-----+
+----------+-----+-----+
| 1TB      |.5TB |.5TB | Disk 4, 2 TB
+----------+-----+-----+

The 4 partitions sized 1 TB would be made into 1 software RAID5 with a total usable size of about ~1.3 TB. The 500GB partitions would be assembled into a RAID5 with about 1 TB total usable space. With an LVM across both RAIDs you'd be looking at ~1.8TB total space that's protected from disk failure. The left-over 500 GB could be used for temporary space, added to the LVM as snapshot space, or to hold the OS.

pludi

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sharefs

sharefs(7FS)							   File Systems 						      sharefs(7FS)

NAME

       sharefs - Kernel sharetab filesystem

DESCRIPTION

       The sharefs filesystem describes the state of all shares currently loaded by the kernel. It is mounted during boot time as a read-only file
       at /etc/dfs/sharetab.

       Filesystem contents are dynamic and  reflect  the current set of shares in the system. File contents are described in sharetab(4).

       File contents can be modified as a result of share(1M), sharectl(1M), sharemgr(1M) and changing properties of a zfs(1M) data set.

       The module may not be unloaded dynamically by the kernel.

FILES

       /etc/dfs/sharetab    System record of shared file systems.

SEE ALSO

       share(1M), sharectl(1M), sharemgr(1M), zfs(1M), sharetab(4)

SunOS 5.11							    31 Oct 2007 						      sharefs(7FS)