Sun Microsystems Fire X4540, Administration Manual

Page: 130 / 154

116 Sun Fire X4500/ X4540 Servers Administration Guide • October 2008
The Sun Fire X4540 server’s preinstalled OS, file systems, and partitions are created
with RAID-1. RAID-1 creates an exact copy (or mirror) of systems data over multiple
physical disks. By duplicating the OS over separate disks, the data is protected from
disk corruption or a disk failure. Additionally, because all the data exists in multiple
copies, each with its own hardware, the read performance increases.
CODE EXAMPLE 13-2
displays the amount of disk space occupied by the preinstalled
OS file system, the amount of used and available space, and how much of the file
system’s total capacity has been used.
CODE EXAMPLE 13-2
Sun Fire X4540 Server Default Preinstalled OS Partition
Creating Preinstalled OS Disk Mirrors
(RAID-1)
These procedures assume that both drives are identical, that the operating system is
already installed on c0t0d0, and that the mirrored disk is c1t0d0, a typical setup for
a Sun Fire X4540 server.
Use this procedure to mirror an existing file system. If the file system can be
unmounted, the entire procedure can be completed without a reboot. For file
systems that cannot be unmounted, such as
/usr
and
/swap
, the system must be
rebooted to complete the procedure.
File System Size Used Available Capacity Mounted on
/dev/md/dsk/d10 11G 5.2G 5.3G 50% /
/devices 0K 0K 0K 0% /devices
ctfs 0K 0K 0K 0% system/contract
proc 0K 0K 0K 0% /proc
mnttab 0K 0K 0K 0% /etc/mnttab
swap 15G 656K 15G 1% /etc/system/volatile
objfs 0K 0K 0K 0% /system/object
/usr/lib/libc/ 11G 5.2G 5.3G 50% /lib/libc.so.1
libc_hwcap2.so.1
fd 0K 0K 0K 0% /dev/fd
/dev/md/dsk/d30 5.8G 1.1G 4.6G 20% /var
swap 15G 28K 15G 1% /var/run
zpool1 21T 49K 21T 1% /zpool