HP Xw6400 - Workstation - 4 GB RAM User manual

Workstation RAID Support
Mini-White Paper
xw4400 RAID Support (Windows)......................................................................................................... 2
xw6400 RAID Support (Windows)......................................................................................................... 3
xw8400 RAID Support (Windows)......................................................................................................... 4
xw9400 RAID Support (Windows)......................................................................................................... 5
RAID 0 Arrays (Striped) ........................................................................................................................ 6
RAID 1 Arrays (Mirrored)...................................................................................................................... 7
RAID 10 Arrays (Striping and Mirroring) ................................................................................................ 8
RAID 5 Arrays (Parity) .......................................................................................................................... 8
RAID 5 Arrays (Parity) .......................................................................................................................... 9

xw4400 RAID Support (Windows)
SATA SAS
Motherboard &
System Capability
Factory
Integration
Controller &
System Capability
Factory
Integration
Boot RAID 0 2-4 HDD32-4 HDD32-4 HDD1,2,3 2-4 HDD1,2,3
Boot RAID 1 2 HDD 2 HDD 2 HDD1,2 2 HDD1,2
Boot RAID 5 3-4 HDD33-4 HDD3
(Nov 2006)
3-4 HDD2,3
(Oct 2006)
3-4 HDD2,3
(Nov 2006)
Boot RAID 10 4 HDD 4 HDD
(Oct 2006) 4 HDD1,2 4 HDD1,2 (Oct 2006)
SATA Boot w/SATA Data 0 3-4 HDD33-4 HDD3N/A N/A
SATA Boot w/SAS Data 0 N/A N/A 2-3 SAS HDD
(SATA Boot)1,2,3
2-3 SAS HDD
(SATA Boot)1,2,3
•Windows 32-bit only
•Windows 32 and 64-bit
•Available Soon
*All HDDs in RAID Array must be identical interface, size, and speed.
1SAS Controller LSI 3041E
2SAS Controller LSI 8344ELP (October 2006)
3Total capacity restrictions apply
2

xw6400 RAID Support (Windows)
SATA SAS
Motherboard &
System Capability
Factory
Integration
Controller1&
System Capability
Factory
Integration
Boot RAID 0 2-3 HDD 2 HDD 2-3 HDD 2 HDD
Boot RAID 1 2 HDD 2 HDD 2 HDD 2 HDD
Boot RAID 5 3 HDD No No No
Boot RAID 10 No No No No
SATA Boot w/SATA Data 0 3 HDD No N/A N/A
SATA Boot w/SAS Data 0 N/A N/A 2 SAS HDD (SATA
Boot) No
•Windows 32-bit only
•Windows 32 and 64-
bit
•Available Soon
*All HDDs in RAID Array must be identical interface, size, and speed.
1SAS Controller is LSI 3041E
3

xw8400 RAID Support (Windows)
SATA SAS
Mobo & System
Capability
Factory
Integration
Mobo & System
Capability
Controller1&
System Capability
Factory
Integration
Boot RAID 0 2-4 HDD22-4 HDD22-4 HDD22-4 HDD22-4 HDD2
Boot RAID 1 2 HDD 2 HDD 2 HDD 2 HDD 2 HDD
Boot RAID 5 3-5 HDD23-5 HDD2
(Nov 2006) 3-5 HDD23-5 HDD23-5 HDD2 (Nov 2006)
Boot RAID 10 4 HDD 4 HDD
(Nov 2006) 4 HDD 4 HDD 4 HDD (Oct 2006)
SATA Boot
w/SATA Data 0 3-5 HDD23-5 HDD2N/A N/A N/A
SATA Boot
w/SAS Data 0 N/A N/A 2-4 SAS HDD2
(SATA Boot)
2-4 SAS HDD2
(SATA Boot)
2-4 SAS HDD2
(SATA Boot)
•Windows 32-bit only
•Windows 32 and
64-bit
•Available Soon
*All HDDs in RAID Array must be identical interface, size, and speed.
1SAS Controller LSI 8344ELP (November 2006)
2Total capacity restrictions apply
4

xw9400 RAID Support (Windows)
SATA SAS
Mobo & System
Capability
Factory
Integration
Mobo & System
Capability
Controller1 &
System Capability
Factory
Integration
Boot RAID 0 2-4 HDD22-4 HDD22-4 HDD22-4 HDD22-4 HDD2
Boot RAID 1 2 HDD 2 HDD 2 HDD 2 HDD 2 HDD
Boot RAID 5 3-5 HDD23-5 HDD2
(Nov 2006) 3-5 HDD23-5 HDD23-5 HDD2 (Nov 2006)
Boot RAID 10 4 HDD 4 HDD
(Nov 2006) 4 HDD 4 HDD 4 HDD
SATA Boot
w/SATA Data 0 3-5 HDD23-5 HDD2N/A N/A N/A
SATA Boot
w/SAS Data 0 N/A N/A 2-4 SAS HDD2 (SATA Boot)
2-4 SAS HDD2
(SATA Boot)
2-4 SAS HDD2
(SATA Boot)
•Windows 32-bit only
•Windows 32 and
64-bit
•Available Soon
*All HDDs in RAID Array must be identical interface, size, and speed.
1SAS Controller LSI 8344ELP (November 2006)
2Total capacity restrictions apply
5

RAID 0 Arrays (Striped)
Data blocks alternated between drives
•Raid 0=Striped
•Data is interleaved among the physical disks
oData writes and reads are parallel
oOffering maximum hard disk performance
•All physical space is available (for example, two 40GB drives shown as one 80GB
volume in OS)
•Single hard drive failure results in loss of all data
•Perfect for applications requiring best possible hard drive/application performance
Block 1
Block 2
Block 3
Ph
y
sical Drives
Block 4
Block 5
Block 1 Block 2
Block 6
Block 4
Block 3
Block 7
Block 5 Block 6
Block 8
Block 7 Block 8
Block 9
Block 11
Block 13
Block 15
Block 10
Block 12
Block 14
Block 16
Lo
g
ical
Drive
Drive B
Drive A
Size =
A
ll of total
p
h
y
sical ca
p
acit
y
6

RAID 1 Arrays (Mirrored)
All data written to both drives
Block 1
Block 2
Block 3
Block 4
•RAID 1 = Mirror
•Data is written to two physical drives in real time
•On single disk failure – no system downtime
All data immediately available from other drive
•Duplicate drive rebuilt upon replacement
•Physical space is cut in half (for example, two 40GB drives needed for
•40GB of space)
•With no loss of data, RAID 1 is perfect for applications requiring very high
availability/security
Block 5
Block 6
Block 7
Block 8
Ph
y
sical Drives
Block 1
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
Block 8
Block 1
Block 2
Block 3
Block 4
Lo
g
ical Block 5
Drive Block 6
Size = Half of total
p
h
y
sical ca
p
acit
y
Block 7
Block 8
Drive B
Drive A
7

RAID 10 Arrays (Striping and Mirroring)
RAID 10 = Stri
p
e + Mirro
r
•Re
q
uires minimum of four drives•Provides write
p
erformance of RAID 1
•Protects a
g
ainst sin
g
le HDD failure•Provides read
p
erformance of RAID 0
Drive A Drive B
Physical Drives
Drive C Drive D
Block 2
0
2
4
6
Block 4
Block 6
Block 8
Block 1
Block 1
Block 1
Block 1 Block 1
Block 1
Block 1
0
2
4
6
Block 1
Block 8
Block 6
Block 4
Block 2
Mirrored Array
Lo
g
ical
Drive
Size = Half of total
physical capacity
Block 8
Block 7
Block 6
Block 5
Block 4
Block 3
Block 2
Block 1
Data written to all drives as
multiple mirrored arrays
Block 1
1
3
5
Block 3
Block 5
Block 7
Block 9
Block 1
Block 1
Block 1 Block 1
Block 1
1
3
5
Block 1
Block 9
Block 7
Block 5
Block 3
Block 1
Mirrored Array
8

RAID 5 Arrays (Parity)
Data from each drive is
duplicated (in segments) on
the other drives in the array
•RAID 5 = parity
•Failed drive is rebuilt from parity data
•Very high read performance
•High system overhead for writes
•Requires minimum of three drives
•Summary
oBetter performance than a single drive
oInexpensive redundancy
Ph
y
sical Drives
Stri
p
1A
Parit
y
(
2B 2C
)
Stri
p
3A
Drive A Drive B
Parit
y
(
3A 3C
)
Stri
p
2B
Parity (1A
Strip
Stri
p
2C
Stri
p
3C
Drive C
© 2006 Hewlett-Packard Development Company, L.P. The information contained
herein is subject to change without notice. The only warranties for HP products and
services are set forth in the express warranty statements accompanying such
products and services. Nothing herein should be construed as constituting an
additional warranty. HP shall not be liable for technical or editorial errors or
omissions contained herein.
439277-001, October 2006
9