NEC D8-30 User manual

NEC Disk Array Unit
D8-30
Configuration Guide
Revision 4.2
Nov.2.2009
Information of disclosure and limitation of usage
NEC Corporation has all the rights about this material.
You can not use this material for any purposes other than provided
purpose.
In addition, you can not duplicate, modify and disclose this material to
any third party without permission of NEC Corporation.
Meanwhile, we may change the contents of this guide without notice in
the future.
NEC Corporation

1
Rev Date of
revision Contents of revision
1 2007.10.02 First Edition
2 2008.11.21 D8-20
3 2008.12.25 Correction of words, etc.
3.1 2009.1.5 “Supported RAID” table in 2-(3-3)
4 2009.3.23 D8-30
4.1 2009.5.18
P.18-19 Error correction
(Total capacity of RV and snapshot w/ RDR/DR: In case of 16GB cache
with Physical HDD capacity 270TB or less)
P.28-29 Added 2 to 3 nodes configuration explanation
4.2 2009.11.2
D8-30 8Gb FC
New basic configuration （HD/DD are sold separately）
New HDD (SAS 600GB/SATA 2TB)
Beyond 2TB Snapshot
・HP-UX is the registered trademark of American Hewlett-Packard in the US.
・UNIX is the registered trademark of The Open Group in the US and other countries.
・Microsoft and Windows are the registered trademarks or trademark of American Microsoft
Corporation in the US and other countries
・Solaris is the registered trademark of Sun Microsystems, Inc.
・Linux is the trademark or registered trademark of Mr. Linus Torvalds in the US and other
countries.
・IBM and AIX are the trademark of IBM Corporation.
・ The names of other companies, products, service and etc. are trademarks or registered
trademarks of each relevant company.

2
Table of Contents
1. SPECIFICATION 3
2. PRODUCTSELECTION 5
3. SOFTWARESPECS 34
Note: D8-30 has only 1 node model. For ease of understanding, we say D8-3010 for 1 node, D8-3020 for
2 nodes, D8-3030 for 3 nodes, and D8-3040 for 4 nodes in this document.

3
1. Specification
The following are the specifications of the D8 Disk Array Unit:
Item D8-30 Disk Array Unit
Chassis configuration
From 1 node to 4 nodes
Max. 32 units of disk enclosure can be connected per node.
Max. 12 units of disk drive can be mounted in the disk enclosure.
(SAS/SATA disk drive can be mounted in the same disk enclosure together.)
Host interface Fiber channel (FC-AL、Fabric) (Max. transfer speed 800MB/S) *1
Number of host port 8 - 64 ports (w/ optional HD)*2
Cache memory
Capacity 8 - 128GB *4
Battery backup
time
No limit (the data will be saved in the flash memory when the cache memory
fails.)
Disk drive SAS 147GB(15,000rpm), 300GB(15,000rpm), 450GB(15,000rpm),600GB(15,000rpm)
SATA 750GB(7,200rpm), 1000GB(7,200rpm),2000GB(7,200rpm)
Disk drive interface SAS(Max. transfer speed 300MB/S)
SATA(Max. transfer speed 300MB/S)
Number of maximum disk drive 1536 units (w/ optional DD) *2*3
RAID level SAS disk drive: RAID-1, 5, 10, 50, 6, 3, 3DP, TM
SATA disk drive: RAID-5,50, 6, TM
Device
capacity
Minimum configuration*3 Maximum configuration *4
SAS
147GB Disk Drive 142GB 195.1TB
300GBDisk Drive 287GB 393.2TB
450GBDisk Drive 440GB 601.1TB
600GBDisk
Drive*6 574GB 786.4TB
SATA
750GBDisk Drive 737GB 1008.0TB
1000GBDisk Drive 984GB 1344.1TB
2000GBDisk
Drive*7
1968GB 2688.2TB
Dimension
（WxDxH）
(Discluding bezel)
Controller (5U) 480x600x218 mm
Disk
enclosure(2U) 480x540x86.5 mm
Weight Controller 60kg or less
Disk enclosure 29kg or less
Power supply AC100～240V Single phase 50/60Hz
Number of AC line Controller Disk enclosure
4 2
Max. power
consumption*5
Controller 1470VA/1420W
Disk enclosure 450VA/430W (380VA/370W when only SATA is installed)
Inrush current
(peak time)
Controller 17Ao-p/AC line
Disk enclosure 17Ao-p/AC line
Temperature and humidity When operating: 5-40 deg C, 10-80 percent When stored: -10-60 deg C, 5-80
percent
Supported OS HP-UX, Solaris, AIX, Windows, Linux (For details, refer to Support Matrix.)
Redundancy Main components such as controller, cache, power supply and fan are redundant.
The capacity values are calculated based on 1GB=1,000,000,000B and 1TB=1,000,000,000,000B.
*1: It can run in 2Gbps/4Gbps/8Gbps mode. (Change of setting is required.)
When using 4Gb HD, it can run 1Gbps/2Gbps/4Gbps(Max). 800MB/s is NOT available.
*2: Maximum number of HD or optional DD can be installed exclusively per node.
*3: SAS:RAID-1 SATA:RAID-TM
*4: Maximum value is with 4 nodes configuration with RAID-5(8+P).
*5: 30% margin over VA value is required for UPS.
*6:Support 25 Dec 2009
*7:Support 22 Feb 2010

4
2. Product Selection
Features
The most outstanding feature of the D8 Series is the expandable scalability. It enables small start
and online expansion of the scalability. Not only the scalability within the unit (referred to as node)
such as controller, cache and HDD, the D8 can expand its scalability by adding nodes. By this
scalability, the D8 Series can cover a broad range from low-end area to high-end area.
1
1node node
2
2nodes nodes
Online
Upgrade
4 nodes
4 nodes
CHE CHE
SW
DAC
HD HD
DD DD
CHE CHE
SW
DAC
HD HD
DD DD
CHE CHE
SW
DAC
HD HD
DD DD
CHE CHE
SW
DAC
HD HD
DD DD
node
node
Internal Structure
The minimum configuration of the node consists of 5U Controller (DAC) and 2U Disk Enclosure (DE).
The controller of one node consists of Host Director (HD) to control the host I/F, Cache Module (CHE)
to control the cache memory, Disk Director (DD) to control the disk I/F and Local Switch (LSW) to
connect these cards and nodes at high speed. Additionally, each node of the D8 has 4 power supply
units, flash memories to save the data of cache memory, and batteries.
The minimum configuration of DAC consists of 2 HD’s, 2 CHE’s and 2 DD’s, and each of them can
expand to 4 in each node. (CHE can individually expand to 4 but as for HD and DD, either of them
can selectively expand to 4.)
Each HD has 4 FC ports (8Gbps) so that it can expand to 4 HD’s with 16 FC ports. DD has SAS
(Serial Attached SCSI) of 3Gbps for the I/F between DAC and DE, WideLink of 4 ports in parallel
realizing a 12Gbps broadband connection.
DE can have up to 12 units of SAS HDD and SATA HDD together and can connect up to 16 unit of
DE and 192 units of disk drive to 2 units of DD. When the DD expands to 4 units, up to 32 units of
DE and 384 units of disk drive can be connected.
As for the disk drive, you can mount SAS drive of 147GB (15,000rpm), 300GB (15,000rpm), 450GB
(15,000rpm), and 600GB(15,000rpm) and SATA drive of 750GB (7,200rpm),1,000GB (7,200rpm), and
2,000GB(7,200rpm) together.
As for cache memory, the standard configuration is 8GB and it can expand up to 32GB in one node.
When available, up to 4 nodes can congregate. In this case, it has scalability of up to 64 host ports,
up to 1536 disk drives and up to 128GB of cache memory. If there are multiple nodes in a unit, it can
access disk drives of any node from a host port, and it is also possible to make a certain host port to
access to certain HDD’s by AccessControl.

5
Fibre Channel x8
BBU
SAS/SATA Disk Enclosure (U p to 12 H DD s)
U p to 1 6 D isk Enclosures can be connected to the D isk D ire c to rs .
16 m ore D isk Enclosures can be connected to the optional D isk D ire c to rs .
DAC
Cache
:2GB
Switch
SAS/SATA HDD
P/S P/S
Switch
DE#00
P/S
CHE：
4GBx2 Cache
:2GB
CHE
HD HD
DD DD
Flash
DD DD
HD
BBU
Inter-node Connection
Flash
LSW
HD
12Gbps SAS Interface
P/S
P/S
P/S
LSW
Hardware Diagram of D8-3010 Disk Array Unit (1 Node Configuration)

6
The steps to select the product of D8 Disk Array Unit are as follows:
Steps to select the product (Expansion)
3
容量の 増設
Addition of
ca pac it y
47
Addition of
cache memory Se le ct th e
ca che m emor y
5
Steps to select the product (New Installation)
Se let c th e
# and
ca pac it o f
HD D
3
Select
the
cache
memory
5Select
the HD
6
Sel ec t
the # of
DE
4
Select the
# of node
1
S elect
t he
E xte nd ed
n ode
83 54
Select
the DD
7
Select
the
B ase Pr od
uct
2
Se lec t th e
Ba seP ro du ct
(u pgr ad e)
2Add it ion of se rv er
or FC Controller
Se le ct
th e HD
6
Addition of HD 2
5
2
Ad ditio n
of node
6
7
H DD: Har d Di sk D riv e
D E: Disk E nc los u re
H D: Host D ir ect o r
D D: Disk D ir ect o r
L SW: Loc al S wit c h
Select the
BaseProduct
(upgrade)
Sel etc the #
and ca p aci t of
HDD
Select the
# o f DE
Se le ct th e
ca ch e
me mo ry
Select
the DD
Select the
BaseProduct
(upgrade)
S ele tc
the # and
c apa cit
o f H DD
Select
the # of
DE
S elect
t he
c ache
m emo ry
S ele ct
t he HD
S elect
t he DD

7
(1) Models of Disk Array Unit
Though D8 Series can have flexible configurations, the initial models are D8-3010 with 1 node and
expanding up to 4 nodes by adding D8-3010, according to the number of basic node. *1
D8-3010 includes Local Switch(LSW) (A/B/C), 8GB cache memory, Please note that Host Director(HD),
Disk Director(HD) and Disk Enclosure(DE) are NOT included. You need to arrange these products
according to configuration.
Product code Product name Attachments Remarks
NF5183-SB401E D8-3010
Disk Array Unit
・ Bezel[DAC] (with key) :1
・ Rack Mount Kit :1
・ Users guide/FW program
/setup guide（CD）:1
・ Attached Parts List
Basic chassis : 1
Diskenclosure :0
Host Director (4ports) : 0
Cache memory (4GBx2) :
8GB
Disk Director (4ports) : 0
Power supply unit:
AC 100-240V
NF5021-SE60E
SAS/SATA
Disk
Enclosure(DE)
・ Bezel[DE] (with key) :1
・ SAScable(1m) :2
・ Rack Mount Kit :1
NF5183-SF02E 8Gb Host
Director(HD) 8Gb Host Director :2
NF5183-SD01E Disk Director
(DD) Disk Director :2
Note: When connecting a server with redundant path, or cluster servers,
the paths are recommended to be connected to the same node of the storage.

8
(2) Selection of BaseProduct
The D8 Disk Array Unit requires the program product“BaseProduct” per Disk Array Unit separately
in addition to H/W products. It includes storage control software and NEC Storage Manager,
comprehensively monitoring and managing the Disk Array Unit of D Series.
BaseProduct with necessary grade according to the number of node of D8 Disk Array Unit, number of
connected server/connection FC controller (number of HBA port) is required.
Besides, in case you “adding nodes” or “adding Host Director,” and even if you do not add these
options, in case you add the number of connected server/connection FC controller (number of HBA port),
check the grade of the existing BaseProduct and purchase an upgrade product if necessary.
D8-3010/3020/3030/3040
Product Name No. of maximum server
connections
A
ttached products
BaseProduct Lite 2 passes x 2 servers
(<=4 HBA port
connections)
StorageManager
AccessControl(4
connections*1)
BaseProduct Standard 2 passes x 8 servers
(<=16 HBA port
connections)
StorageManager
AccessControl(16
connections*1)
ReallocationControl
BaseProduct Enterprise 2 passes x 9 or more
servers
(No limitation of server
connections)
StorageManager
AccessControl(No limited
connection)
ReallocationControl
PerformanceMonitor
*1 This figure is number of HBA connection port which is attached on server.
- As for the D Series, AccessControl is not an optional product but it is included in the BaseProduct.
(cf. AccessControl is an optional product for the S Series.)
-As for the D Series, the number of connections is defined as the number of server and the number of
HBA connections.
(cf. For the S Series, the number of connections was defined as only the number of HBA ports.)
“Lite” includes AccessControl for 2 or less servers (4 or less HBA ports).
“Standard” includes AccessControl for 8 or less servers (16 or less HBA ports).
“Enterprise” includes AccessControl for 9 or more servers.
e.g.
“<=2 servers (<=4 HBA port connections)”license means the following.
- 1 server with 4 paths: Allowed.
- 2 servers with 2 paths each: Allowed.
- 3 servers with 1 path each: NOT allowed. (It exceeds “2 servers”.)
- 2 servers with 3 paths each: NOT allowed. (It exceeds “4 HBA port connections”.)

9
(3) Selection of Quantity/Capacity of Disk Drive
The logical disk capacity you can configure varies depending on the type (I/F, capacity) of disk drive
and the level of RAID.
Besides, necessary logical disk capacity varies depending on the functions you use (e.g.
Snapshot/Replication function).
To determine the necessary number of disk drive, it is necessary to determine the type (I/F,
capacity, rotation number) of disk drive and the level of RAID according to the usage of data and
calculate the necessary logical disk capacity by referring to the following information.
Beside, you are required to mount at least 3 or more disk drives per node, regardless of the type
(SAS/SATA) of disk drive.
Meanwhile, for support RAID type, refer to “Support RAID” mentioned below.
DE#00
(Notes)
Snapshot
Snapshot reserved area is necessary for creating snapshot to a master volume.
Replication
In case of using replication function, using Storage System Information Retention Function* to
create the Storage System Volume is strongly recommended.
The capacity of storage system volume is 8.9GB (1GB=10003Byte)/8.3 GB (1GB=10243Byte).
By turning the power off according to the normal procedure, Storage System Data (difference
map etc.) will be backed up into the Storage System Volume. Without the Storage System
Volume, it retains the storage system information in cache memory within a battery backup
time but the lifetime of battery will shorten. In case not to use the Storage System Volume 24
hours power distribution is recommended.
*Storage System Information Retention Function is the function to back up storage system
data such as difference map of Master Volume (MV) and Replication Volume (RV) to a disk
drive.
(3-1) Selection of Capacity/Quantity of SAS/SATA Disk Drive
Select necessary number of SAS disk drive.
Product code Product name Product outline
Average
seek time
(R/W)
Physical
capacity
(GB)
*1 *2
NF5021-SM624E SAS Disk Drive (15krpm/147GB) 147GB 15,000rpm 3.5ms/4.0ms 142.9 133.1
NF5021-SM625E SAS Disk Drive (15krpm/300GB) 300GB 15,000rpm 3.5ms/4.0ms 288.0 268.2
NF5021-SM627E SAS Disk Drive (15krpm/450GB) 450GB 15,000rpm 3.5ms/4.0ms 440.2 410.0
NF5023-SM728E SAS Disk Drive (15krpm/600GB) 600GB 15,000rpm 3.5ms/4.0ms 576.0 536.4
*1: Calculated figures based on 1GB=1,000,000,000B
*2: Calculated figures based on 1GB=1,073,741,824B(1,0243B)
#00 #01 #02 #03
#04 #05 #06 #07
#08 #09 #0A #0B
* Make sure to mount disk drives into slots
#00, #01 and #02.

10
Select necessary number of SATA disk drive.
Product code Product name Product outline
Average
seek time
(R/W)
Physical capacity
(GB)
*1 *2
NF5021-SM805E SATA Disk Drive
(7200rpm/750GB) 750GB 7,200rpm 8.5ms/9.5ms 738.3 687.6
NF5021-SM806E
SATA Disk Drive
(7200rpm/1000GB)
1000GB 7,200rpm 8.5ms/9.5ms 984.4 916.8
NF5023-SM808E SATA Disk Drive
(7200rpm/2000GB) 2000GB 7,200rpm 8.5ms/9.5ms 1968.95 1833.73
*1: Calculated figures based on 1GB=1,000,000,000B
*2: Calculated figures based on 1GB=1,073,741,824B(1,0243B)
(3-2) Disk Drive Capacity in the pool.
Logical disk capacity is slightly less when it is use in the Dynamic Pool than in Basic Pool.
See the following chart.
Logical capacity of the HDD in the pool.
HDD
Type Basic Pool Dynamic Pool
RAID-6(4+PQ) RAID-6(8+PQ) RAID-TM RAID-1
*1 *2 *1 *2 *1 *1 *2 *2 *2 *2
SAS
147GB 142.9GB 133.1GB 142.1GB 132.3GB 142.6GB 132.8GB 142.5GB 132.7GB 142.8GB 133.0GB
SAS
300GB 288.0GB 268.2GB 287.0GB 267.3GB 287.5GB 267.8GB 287.4GB 267.7GB 287.7GB 268.0GB
SAS
450GB 440.2GB 410.0GB 439.6GB 409.5GB 440.2GB 410.0GB 439.6GB 409.5GB 440.2GB 410.0GB
SAS
600GB 576.0GB 536.4GB 574.9GB 535.5GB 575.4GB 535.9GB 574.9GB 535.5GB 575.5GB 536.0GB
SATA
750GB 738.3GB 687.6GB 737.6GB 687.0GB 738.1GB 687.5GB 737.6GB 687.0GB - -
SATA
1000GB 984.5GB 916.9GB 983.6GB 916.1GB 983.8GB 916.2GB 984.0GB 916.5GB - -
SATA
2000GB 1968.9GB 1833.7GB 1968.1GB 1833.0GB 1968.6GB 1833.4GB 1968.1GB 1833.0GB - -
*1: Calculated figures based on 1GB=1,000,000,000B
*2: Calculated figures based on 1GB=1,073,741,824B(1,0243B)

11
(3-3) Supported RAID
The RAID levels D8-3010 supports are as follows:
However, SATA disk drive supports only RAID-5,50, 6 and TM
Besides, RAID can configure only in the same Disk Director (basic Disk Director: 16DE, 192HDD,
Expansion Disk Director: 16DE, 192HDD) of a node.
Pool RAID type Number of physical disk Logical disk capacity
Basic
pool
RAID-1(1+1) 2 drives (1+1) Physical disk capacity x1
/
2
RAID-3 4+P 5 drives Physical disk capacity x4
/
5
8+P 9 drives Physical disk capacity x8
/
9
RAID-3DP 4+PQ 6 drives Physical disk capacity x2
/
3
8+PQ 10 drives Physical disk capacity x4
/
5
RAID-5 2+P 3,4 drives Physical disk capacity x2/3
4+P 5,6,7,8 drives Physical disk capacity x4/5
8+P 9,10,11,12 drives Physical disk capacity x8/9
RAID-10 (1+1)x2～8 4,6,8,10,12,14,16 drives Physical disk capacity x1/2
RAID-50 (4+P)x2 10 drives Physical disk capacity x4/5
(4+P)x4 20 drives
Dynamic
pool
RAID-6*1 4+PQ 6 or more drives Physical disk capacity x2/3*3
8+PQ 10 or more drives Physical disk capacity x4/5*3
RAID-TM*1 3 or more drives Physical disk capacity x1/3*3
RAID-1*1*2 2 or more drives Physical disk capacity x1/2*3
*1: Can dynamically change LUN capacity by dynamic pool function.
*2: Only SAS disk can be used for Dynamic pool with RAID-1.
*3: Capacity efficiency is constant, regardless of the number of configured drive. Even in
case of adding a disk drive, the capacity efficiency does not change.
The theoretical capacities of dynamic pool are slightly smaller than the above figures.

12
(3-4) Hot Spare Disk
- Hot spare disk is recommended to enhance the availability of a unit.
- There is no upper limit for the number of hot spare disks.
- Hot spare disk operates only in the same Disk Director (basic Disk Director: 16DE,192HDD,
Expansion Disk Director: 16DE, 192HDD) in a node.
- The default setting of hot spare operation does not allow the data to be written back. When the hot
spare disk is used and the failed disk is replaced, the replacement disk is defined as a new hot
spare disk.
In case you set the hot spare operation so that the data is to be written back, the data in the hot
spare disk will be transferred to the replacement disk, and after the completion of the “write
back”, the hot spare disk will be used for the backup again. The operation of hot spare disk can be
set from the NEC Storage Manager.
- Hot spare disk can be used for the disk drives with the same interface.
- Hot spare disk is recommended to be the same capacity and the same rotation speed as the disks
in the pools. If different types of disks are used in different pools, there should also be different
types of hot spare disks accordingly.
- If there are multiple types of hot spare disks, the same type of disk as the disk in the defected
pool*1 is selectively used for backup.
- When the type of disk that used in the defected pool is not left as a hot spare disk, the hot spare
disks are used in the following order of priority.
1. The hot spare disk with the same type of interface, same capacity, same or more
rotation speed as the disk in the defected pool.
2. The hot spare disk with the same type of interface, same or more capacity as the disk in
the defected pool.
- As the recommended number of the hot spare disk is different between SAS and SATA Disk
Drives, refer to the tables in a) and b) below:
a) SAS Disk Drive
<Recommended number of Hot Spare Disk for SAS Disk Drive>
b) SATA Disk Drive
<Recommended number of Hot Spare Disk for SATA Disk Drive>
Conditions Recommended number of Hot Spare
Disk
In case the capacity/rotation speed of disk
drive is 1 type
1per24HDD’s
In case of the capacity/rotation speed of disk
drive is n types
n types per 24 HDD’s
Conditions Recommended number of Hot Spare
Disk
In case the capacity/rotation speed of disk
drive is 1 type
1 per 12 HDD’s
In case of the capacity/rotation speed of disk
drive is n types
n types per 12 HDD’s

13
(3-5) Mixed Use of Disk Drive
- This disk array unit can have SAS/SATA disk drives together, and disk drives with different
capacity/rotation speed together, in the basic chassis and in the same SAS/SATA disk enclosure.
- It is strongly recommended to use the same type of disks in a pool.
(4) Selection of Quantity of SAS/SATA Disk Enclosure
- 1 unit of disk enclosure can mount max. 12 units of SAS or SATA disk drive together.
- In a basic configuration, 1 unit of disk enclosure per node is included as standard.
This disk enclosure should be “DE#00” (see the following diagram “DE Connection”).
- For DE#00, at least 3 or more disk drives are required. The mounting position of the disk is as
follows:
DE#00
- For a Disk Director with standard configuration, you can connect max.16 units (including a disk
enclosure included as standard) of disk enclosure.
- In case you mount an expansion Disk Director, you can connect additionally max.16 units of disk
enclosure to it. In this case, you can connect totally max. 32 units of disk enclosure per node.
- The disk enclosure includes 1m SAS cable as standard. For the case in which the distance between
two units are too long for the 1m SAS cable, 5ｍSAS cable is also available.
#00 #01 #02 #03
#04 #05 #06 #07
#08 #09 #0A #0B
*make sure to mount disk drives into slots
#00, #01 and #02.

14
DE#00
ＤＤ ＤＤ
DE#04DE#08 DE#0C
DE Connection
PD Group #0
ＤＤ ＤＤ
PD Group #1
DAC
DE#01 DE#05DE#09 DE#0D
DE#02 DE#06DE#0A DE#0E
DE#03 DE#07DE#0B DE#0F
DE#10 DE#14
DE#18 DE#1C
DE#11 DE#15DE#19 DE#1D
DE#12 DE#16DE#1A DE#1E
DE#13 DE#17DE#1B DE#1F
Standard Disk Director Optional Disk Director
PD G roup #0: H D D s under the Standard D D .
PD G roup #1: H D D s under the O ptional D D .
-RAID can be made within the PD group.
-Hot Spare Disk can save the HDD in
the same PD group.
Allocation within the Rack (Cable Connection)
The DE should be installed in the following order.
00, 04, 08, 0c, 01, 05, 09, 0D, …
DE#00
DE#04
DE#08
DE#0C
DE#01
DE#05
DE#09
DE#0D
DE#02
DE#06
DE#0A
DE#0E
DE#03
DE#07
DE#0B
DE#0F
DAC
DE#10
DE#14
DE#18
DE#1C
DE#11
DE#15
DE#19
DE#1D
DE#12
DE#16
DE#1A
DE#1E
DE#13
DE#17
DE#1B
DE#1F
Optional Disk director
Rack #1 Rack #2
：SAS Cable(1m)
：SAS Cable(5m)
PD group #0
PD group #1
Standard Disk Director
DE#00
DE#04
DE#08
DE#0C
DE#01
DE#05
DE#09
DE#0D
DE#02
DE#06
DE#0A
DE#0E
DE#03
DE#07
DE#0B
DE#0F
DAC
DE#10
DE#14
DE#18
DE#1C
DE#11
DE#15
DE#19
DE#1D
DE#12
DE#16
DE#1A
DE#1E
DE#13
DE#17
DE#1B
DE#1F
Optional Disk director
Rack #1 Rack #2
：SAS Cable(1m)
：SAS Cable(5m)
PD group #0
PD group #1
Standard Disk Director

15
Allocation within the Rack (Location)
0
5
10
15
20
25
30
35
Vacant (7U)
V acant (12U )
40
DE(2U)#0F
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)
0
5
10
15
20
25
30
35
40
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)
36U Rack R ecom m ended Location
36U Rack R ecom m ended Location
DE: 15units DE: 17units
DE: 16units DE: 16units
1 node (1DAC+32DE）
1 node (1DAC+32DE）
Vacant (2U )
44U Rack R ecom m ended Location
44U Rack R ecom m ended Location
45
DAC: 1units
DAC: 1units
V acant (1U )
0
5
10
15
20
25
30
35
Vacant (7U)
V acant (12U )
40
DE(2U)#0F
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)
0
5
10
15
20
25
30
35
40
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)
36U Rack R ecom m ended Location
36U Rack R ecom m ended Location
DE: 15units DE: 17units
DE: 16units DE: 16units
1 node (1DAC+32DE）
1 node (1DAC+32DE）
Vacant (2U )
44U Rack R ecom m ended Location
44U Rack R ecom m ended Location
45
DAC: 1units
DAC: 1units
V acant (1U )
4 nodes (1DAC+32DEx4set)
4 nodes (1DAC+32DEx4set)
0
5
10
15
20
25
30
35
40 NODE #0 NODE #1 NODE #2 NODE #3
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
D E(2U )#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#0
空き(2U ) 空き(1U )
36U R ack R ecom m ended Location
36U R ack R ecom m ended Location
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#1
空き(2U ) 空き(1U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
空き(2U )
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#2
空き(1U )
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#3
空き(1U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
空き(2U )
4 nodes (1DAC+32DEx4set)
4 nodes (1DAC+32DEx4set)
0
5
10
15
20
25
30
35
40 NODE #0 NODE #1 NODE #2 NODE #3
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
D E(2U )#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#0
空き(2U ) 空き(1U )
36U R ack R ecom m ended Location
36U R ack R ecom m ended Location
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#1
空き(2U ) 空き(1U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#1
空き(2U ) 空き(1U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
空き(2U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
空き(2U )
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#2
空き(1U )
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#2
空き(1U )
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#3
空き(1U )
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DE(2U)#07
DE(2U)#03
DE(2U)#0B
DAC(5U)#3
空き(1U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
空き(2U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0F
空き(2U )
Vacant(2U
Vacant(2U Vacant(1U Vacant(2U Vacant(1U Vacant(2U Vacant(1U Vacant(1U Vacant(2U
Note: 3,4 nodes will be supported in later

16
Product model
number Product name
Number of
maximum
mountable
disk drive
Remarks Appended goods
NF5181-SE60E SAS/SATA Disk
Enclosure 12
Power
supply unit:
AC 100～
240V
・ SAS cable (1m) x2
・ Bezel(with key) x1
・ Rack Mount Kit x1
Product
model
number
Product name Cable
length
Remarks
NF9120-SJ64 SAS Cable(5m) 5m SAS cable dedicated to connection between
DAC-DE/DE-DE X2, (for 1 Disk enclosure)
4 nodes (1DAC+32DEx4set)
4 nodes (1DAC+32DEx4set)
0
5
10
15
20
25
30
35
40
NODE #0 NODE #1 NODE #2 NODE #3
空き(7 U )
空き(12U )
DE(2U)#0F
D E(2U )#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#0
空き(7 U )
空き(12U )
D E(2U )#0F
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
D E(2U )#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#1
空き(1 2 U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
空き(7 U )
D E(2U )#0F
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#2
空き(7 U )
空き(12U )
DE(2U)#0F
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
D E(2U )#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#3
45
44U R ack R ecom m ended Loacation
44U R ack Recom m ended Loacation
4 nodes (1DAC+32DEx4set)
4 nodes (1DAC+32DEx4set)
0
5
10
15
20
25
30
35
40
NODE #0 NODE #1 NODE #2 NODE #3
空き(7 U )
空き(12U )
DE(2U)#0F
D E(2U )#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#0
空き(7 U )
空き(12U )
D E(2U )#0F
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
D E(2U )#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#1
空き(1 2 U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
空き(1 2 U )
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
空き(7 U )
D E(2U )#0F
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#2
空き(7 U )
D E(2U )#0F
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
DE(2U)#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#2
空き(7 U )
空き(12U )
DE(2U)#0F
DE(2U)#1F
DE(2U)#1B
DE(2U)#17
DE(2U)#13
DE(2U)#1E
DE(2U)#1A
DE(2U)#16
DE(2U)#12
DE(2U)#1D
DE(2U)#19
DE(2U)#15
DE(2U)#11
DE(2U)#1C
DE(2U)#18
DE(2U)#14
DE(2U)#10
DE(2U)#0B
DE(2U)#07
DE(2U)#03
DE(2U)#0E
DE(2U)#0A
DE(2U)#06
DE(2U)#02
D E(2U )#0D
DE(2U)#09
DE(2U)#05
DE(2U)#01
DE(2U)#0C
DE(2U)#08
DE(2U)#04
DE(2U)#00
DAC(5U)#3
45
44U R ack R ecom m ended Loacation
44U R ack Recom m ended Loacation
Vacant(12U Vacant(7U) Vacant(12U Vacant(7U) Vacant(12U Vacant(7U) Vacant(7U) Vacant(12U

17
(5) Selection of Cache Memory
Minimum capacity of cache memory per node is 8GB and the performance of disk array unit
improves by adding the cache memory. You can expand the cache memory from 8GB to 16GB and 32GB.
8GB cache memory consists of 2 cache memory modules, and 8GB or more cache memory consists of 4
cache memory modules.
In case the cache memory module is configured with 2 modules, it operates as a duplicated cache, and
in the event of the failure of cache memory module, Write Cache operation changes to Write through
like conventional mid-sized machine, and Write performance significantly deteriorates. However, in
case of the cache memory modules are configure by 4 modules, they operate as two pairs of duplicated
cache and in the event of the failure of cache memory module, as redundancy is
kept by the other pair, Write Cache operation can continue. Therefore, you can minimize the
performance deterioration.this unit.
By adding cache, due to the effect of cache hit, you can improve Read/Write performance of the unit.
According to the performance cache hit you expect, you need to add the cache memory but in general,
mount the cache in proportion to the disk capacity you mount into the unit. The followings are
our recommendable figures to mount cache for disk capacity:
Meanwhile, the cache memory works as the disk cache of the disk drives of the mounted node.
In addition, in case of multiple nodes, you can expand the capacity individually.
Target of cache capacity per node
Logical disk
capacity
(GB)
Cache capacity
(GB)
- 4,000 8GB
4,001 - 8,000 16GB
8,001 - 32GB
Product model
number
Product name Product outline
NF5183-SC21E Extended cache module
(CHE) (8GB)
For NF5183-SB401E
Extended node chassis (NF5183-SB03E)
Cache memory 8GB: (4GB/module)x2
+ Battery backup unit x2 (for 2 modules)
NF5183-SC22E Extended cache module
(CHE) (16GB Æ32GB)
For NF5183-SB401E
Extended node chassis (NF5183-SB03E)
Additional cache memory from 16GB to 32GB
# Logical disk capacity is user’s capacity of Disk
Array Unit.
(Example: capacity equivalent to “D” configured by
RAID-5(4D+P) )
Beside, the left column is the minimum requirement,
mere target and we recommend to mount as much as
possible.

18
(Cache memory expansion scheme)
（Cache module selection matrix）
Product Number Product Name
NF5183-SB401E NF5183-SB03E
Cache capacity Cache capacity
8GB 16GB 32GB 8GB 16GB 32GB
NF5183-SC21E Cache module(CHE) (8GB) 0 1 1 1 2 2
NF5183-SC22E Extended cache module(CHE)
(16GB→32GB)
00 1 00 1
Extended node chassis (NF-5183-SB03E) does not include cache module. If you use extended node
chassis for node expansion, you need to arrange at least one Cache module(CHE)(8 GB) .
②Standard(8G B)⇒Extended(1 6G B)
Cache Module
(CHE)(8GB)
NF5183-
SC21E
Cache Module
(CHE)(8GB)
Standard
CHE(4GB)×4
CHE
16GB CHE00 CHE01
BBU BBU CHE02 CHE03
BBU BBU
2GB 2GB 2GB 2GB2GB 2GB 2GB 2GB
CHE00 CHE01
BBU BBU
2GB 2GB 2GB 2GB
CHE02 CHE03
BBU BBU
2GB 2GB 2GB 2GB
Cache Module
(CHE)(8GB)
NF5183-
SC21E
Cache Module
(CHE)(8GB)
Standard
CHE(4GB)×4
CHE
16GB CHE00 CHE01
BBU BBU CHE02 CHE03
BBU BBU
2GB 2GB 2GB 2GB2GB 2GB 2GB 2GB
CHE00 CHE01
BBU BBU
2GB 2GB 2GB 2GB
CHE02 CHE03
BBU BBU
2GB 2GB 2GB 2GB
Extended Cache
Module
(16GB→32GB)
NF5183-SC22E
Cache Module
(CHE)(4GB)×4
Standard+
NF5183-SC21E
CHE(8GB)×4CHE 32GB
CHE00 CHE01
BBU BBU CHE02 CHE03BBU BBU
2GB 2GB 2GB 2GB
2GB 2GB 2GB 2GB2GB 2GB 2GB 2GB
2GB 2GB 2GB 2GB
CHE00 CHE01
BBU BBU CHE02 CHE03
BBU BBU
2GB 2GB 2GB 2GB2GB 2GB 2GB 2GB
2GB 2GB 2GB 2GB
2GB 2GB 2GB 2GB
③Extended(16G B)⇒Extended(32G B)
Cache Module
(CHE)(8GB)
Standard CHE00 CHE01
BBU BBU
2GB 2GB 2GB 2GB
Cache Module
(CHE)(8GB)
Standard CHE00 CHE01
BBU BBU
2GB 2GB 2GB 2GB
①Standard(8 G B)
Note : Extended node chassis (NF5183-SB03E) does not include Cache memory.
You need to order NF-5183-SC21E as a standard cache module.

19
(Notes on using Data Replication Function)
In case you use data replication function (without snapshot) with D8 Series, select the minimum
size of cache memory from the following table according to the total HDD capacity and the total
replication volume (RV):
Total HDD
Physical capacity
Other than RAID-6 configuration: up to maximum capacity, in RAID-6 configuration:
up to 270,000GB
Cache capacity *1 4GB 8GB -16GB -24GB -32GB -40GB -48GB -56GB -128GB
RV total capacity
(When not using
RDR/DR)
40TB 40TB 80TB 120TB 160TB 200TB 240TB 280TB 500TB
RV total capacity
(When using
RDR/DR )
- 20TB 60TB 80TB 120TB 180TB 220TB 260TB 500TB
Total HDD
Physical capacity
In RAID-6 configuration: 270,001-530,000GB
Cache capacity *1 4GB 8GB -16GB -24GB -32GB -40GB -48GB -56GB -128GB
RV total capacity
(When not using
RDR/DR)
35TB 35TB 75TB 115TB 155TB 195TB 235TB 275TB 500TB
RV total capacity
(When using
RDR/DR )
- 15TB 55TB 95TB 135TB 175TB 215TB 255TB 500GB
Total HDD
Physical capacity
In RAID-6 configuration: 530,001-790,000GB
Cache capacity *1 4GB 8GB -16GB -24GB -32GB -40GB -48GB -56GB -128GB
RV total capacity
(When using
RDR/DR)
30TB 30TB 70TB 110TB 150TB 190TB 230T0B 270TB 500TB
RV total capacity
(When using
RDR/DR )
- 10TB 50TB 90TB 130TB 170TB 210TB 250TB 500TB
Total HDD
Physical capacity
In RAID-6 configuration: 790,001GB-maximum capacity
Cache capacity *1 4GB 8GB -16GB -24GB -32GB -40GB -48GB -56GB -128GB
RV total capacity
(When not using
RDR/DR)
25TB 25TB 65TB 105TB 145TB 185TB 225TB 265TB 500TB
RV total capacity
(When using
RDR/DR )
- 5TB 45TB 85TB 125TB 165TB 205TB 245TB 500TB
Note) The above “RV total capacity (when using RDR/DR)” is the capacity in case the buffer area of
semi-synchronous sequence is 256MB
*1 128GB is with 4 nodes configuration.