我有 2 个磁盘，型号和供应商相同，第一个磁盘的性能可能更快。我们确实写入多个文件。您能比较两种配置并说明什么会影响性能吗？ 1.（更快）
*-storage
description: RAID bus controller
product: Smart Array G6 controllers
vendor: Hewlett-Packard Company
physical id: 0
bus info: pci@0000:03:00.0
logical name: scsi3
version: 01
width: 64 bits
clock: 33MHz
capabilities: storage pm msi pciexpress msix bus_master cap_list rom
configuration: driver=hpsa latency=0
resources: irq:40 memory:f3e00000-f3ffffff memory:f3df0000-f3df0fff ioport:4000(size=256) memory:f0400000-f047ffff(prefetchable)
*-generic UNCLAIMED
description: SCSI
product: P410i
vendor: HP
physical id: 3.0.0
bus info: scsi@3:3.0.0
version: 5.12
serial: 500143801031E8B0
configuration: ansiversion=5
*-disk
description: SCSI Disk
product: LOGICAL VOLUME
vendor: HP
physical id: 0.0.0
bus info: scsi@3:0.0.0
logical name: /dev/sda
version: 5.12
serial: 500143801031E8B0
size: 136GiB (146GB)
capabilities: 15000rpm partitioned partitioned:dos
configuration: ansiversion=5 signature=0007010a
*-volume:0
description: EXT3 volume
vendor: Linux
physical id: 1
bus info: scsi@3:0.0.0,1
logical name: /dev/sda1
logical name: /boot
version: 1.0
serial: ed2d10ca-365a-4442-88de-b505aae07eaa
size: 102MiB
capacity: 102MiB
capabilities: primary bootable journaled extended_attributes ext3 ext2 initialized
configuration: created=2014-11-20 03:17:39 filesystem=ext3 modified=2015-03-15 12:07:09 mount.fstype=ext3 mount.options=rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered mounted=2015-03-02 08:47:09 state=mounted
*-volume:1
description: EXT3 volume
vendor: Linux
physical id: 2
bus info: scsi@3:0.0.0,2
logical name: /dev/sda2
logical name: /
version: 1.0
serial: 06719133-4959-4d5d-a288-7d9c00951721
size: 20GiB
capacity: 20GiB
capabilities: primary journaled extended_attributes large_files recover ext3 ext2 initialized
configuration: created=2014-11-20 03:17:40 filesystem=ext3 modified=2014-11-20 03:23:58 mount.fstype=ext3 mount.options=rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered mounted=2015-03-15 12:13:47 state=mounted
*-volume:2
description: Linux swap volume
physical id: 3
bus info: scsi@3:0.0.0,3
logical name: /dev/sda3
version: 1
serial: 61605a39-70a7-4121-9cca-49d5bea970ac
size: 12GiB
capacity: 12GiB
capabilities: primary nofs swap initialized
configuration: filesystem=swap pagesize=4096
*-volume:3
description: Extended partition
physical id: 4
bus info: scsi@3:0.0.0,4
logical name: /dev/sda4
size: 104GiB
capacity: 104GiB
capabilities: primary extended partitioned partitioned:extended
*-logicalvolume
description: Linux filesystem partition
physical id: 5
logical name: /dev/sda5
logical name: /export/home
capacity: 104GiB
configuration: mount.fstype=ext3 mount.options=rw,relatime,errors=continue,user_xattr,acl,barrier=1,data=ordered state=mounted
*-storage
description: SATA controller
product: SB7x0/SB8x0/SB9x0 SATA Controller [IDE mode]
vendor: Hynix Semiconductor (Hyundai Electronics)
physical id: 11
bus info: pci@0000:00:11.0
version: 00
width: 32 bits
clock: 66MHz
capabilities: storage pm ahci_1.0 bus_master cap_list
configuration: driver=ahci latency=64
resources: irq:16 ioport:1000(size=8) ioport:1008(size=4) ioport:1010(size=8) ioport:1018(size=4) ioport:1020(size=16) memory:f38f0000-f38f03ff
- （慢点）
*-storage
> description: RAID bus controller
> product: Smart Array G6 controllers
> vendor: Hewlett-Packard Company
> physical id: 0
> bus info: pci@0000:03:00.0
> logical name: scsi3
> version: 01
> width: 64 bits
> clock: 33MHz
> capabilities: storage pm msi pciexpress msix bus_master cap_list rom
> configuration: driver=hpsa latency=0
> resources: irq:40 memory:f3e00000-f3ffffff memory:f3df0000-f3df0fff ioport:4000(size=256)
> memory:f0500000-f057ffff(prefetchable)
> *-generic UNCLAIMED
> description: SCSI
> product: P410i
> vendor: HP
> physical id: 3.0.0
> bus info: scsi@3:3.0.0
> version: 5.14
> serial: 50014380189B2590
> configuration: ansiversion=5
> *-disk
> description: SCSI Disk
> product: LOGICAL VOLUME
> vendor: HP
> physical id: 0.0.0
> bus info: scsi@3:0.0.0
> logical name: /dev/sda
> version: 5.14
> serial: 50014380189B2590
> size: 136GiB (146GB)
> capabilities: 15000rpm partitioned partitioned:dos
> configuration: ansiversion=5 signature=00066463
> *-volume:0 UNCLAIMED
> description: EXT3 volume
> vendor: Linux
> physical id: 1
> bus info: scsi@3:0.0.0,1
> version: 1.0
> serial: 8ed9f5e7-ad76-4856-bd71-739fa801c250
> size: 102MiB
> capacity: 102MiB
> capabilities: primary bootable journaled extended_attributes recover ext3 ext2 initialized
> configuration: created=2013-11-14 19:24:52 filesystem=ext3 modified=2015-02-18 02:37:00 mounted=2015-02-18
> 02:37:00 state=clean
> *-volume:1 UNCLAIMED
> description: EXT3 volume
> vendor: Linux
> physical id: 2
> bus info: scsi@3:0.0.0,2
> version: 1.0
> serial: e0ec5ade-1a3a-4a6f-899b-6dd14e628f63
> size: 20GiB
> capacity: 20GiB
> capabilities: primary journaled extended_attributes large_files recover ext3 ext2 initialized
> configuration: created=2013-11-14 19:24:53 filesystem=ext3 modified=2013-11-14 19:31:09 mounted=2015-03-07
> 17:39:26 state=clean
> *-volume:2 UNCLAIMED
> description: Linux swap volume
> physical id: 3
> bus info: scsi@3:0.0.0,3
> version: 1
> serial: 269a2358-bd61-4d39-8a56-7354ebb03f76
> size: 12GiB
> capacity: 12GiB
> capabilities: primary nofs swap initialized
> configuration: filesystem=swap pagesize=4096
> *-volume:3 UNCLAIMED
> description: Extended partition
> physical id: 4
> bus info: scsi@3:0.0.0,4
> size: 104GiB
> capacity: 104GiB
> capabilities: primary extended partitioned partitioned:extended
> *-logicalvolume UNCLAIMED
> description: Linux filesystem partition
> physical id: 5
> capacity: 104GiB
> *-storage
> description: SATA controller
> product: SB7x0/SB8x0/SB9x0 SATA Controller [IDE mode]
> vendor: Hynix Semiconductor (Hyundai Electronics)
> physical id: 11
> bus info: pci@0000:00:11.0
> version: 00
> width: 32 bits
> clock: 66MHz
> capabilities: storage pm ahci_1.0 bus_master cap_list
> configuration: driver=ahci latency=64
> resources: irq:16 ioport:1000(size=8) ioport:1008(size=4) ioport:1010(size=8) ioport:1018(size=4) ioport:1020(size=16)
> memory:f38f0000-f38f03ff