Fujitsu ETERNUS DX80 S2 Overview page 21

Chapter 2 Specifications
2.2 Function Specifications
Advanced Copy
*1: Use of RAID0 is not recommended because it is not redundant. For RAID0 configurations, data may be lost due to the
failure of a single drive.
*2: The maximum number of RAID groups that can be registered (for RAID1).
*3: The maximum number of host information (HBAs) that can be registered. A WWN is registered as the host
information when the HBA of the connected server is FC/FCoE. A SAS address is registered for a SAS HBA and the iSCSI
name and IP address are registered as a set for an iSCSI HBA.
When there are two host interface ports for each ETERNUS DX Disk storage system, the maximum number of
connectable hosts is 512. Since the maximum number of connectable hosts for each port is 256, the maximum
number of connectable hosts for each ETERNUS DX Disk storage system is 256 × the number of ports when the
number of host interface ports is 4 ports or less.
*4: To use this function, the additional license is required (optional function). For the RAID configurations that can be
registered for the Thin Provisioning function or the Flexible Tier function, refer to
can be registered in a Thin Provisioning Pool or a Flexible Tier Pool" (page
*5: For details on the types of Advanced Copy, refer to
*6: When the Consistency mode is used, the maximum number of REC buffers is the same as the maximum number of
connectable storage systems.
*7: For details on the maximum number of copy sessions for a single area, refer to the multiple copy section in
Available Advanced Copy Combinations" (page
*8: This value is the total capacity of data that can be copied simultaneously. The copy capacity differs depending on the
settings and the copy conditions.
The following formula can be used to calculate the copy capacity:
Executable copy capacity [GB] = (S[MB] × 1024 ÷ 8[KB] − N) × M ÷ 2 (round down the result)
S: copy table size, N: the number of sessions, M: bitmap ratio
For details about the setting, refer to "ETERNUS Web GUI User's Guide".
*9: This value was calculated when:
-
The maximum copy table size was set for the ETERNUS DX Disk storage system.
-
The maximum bitmap ratio was set for the ETERNUS DX Disk storage system.
-
The maximum number of the sessions was set for the ETERNUS DX Disk storage system.
-
Restore OPC was not used.
*10: For details on REC buffers and REC disk buffers, refer to the Consistency mode section in
83).
*11: Four (2+2) or eight (4+4) drives are required as configuration drives.
Item
*4
Copy capacity (max.)
SDP capacity (max.)
Number of REC buffers (max.)
Size per REC buffer (max.)
REC buffer size per storage system
*10
(max.)
Number of REC disk buffer RAID
groups per REC buffer
Supported RAID levels for REC disk
*10
buffers
ETERNUS DX80 S2/DX90 S2 Disk storage system Overview
Copyright 2013 FUJITSU LIMITED
ETERNUS DX80 S2
*8 *9
248TB
128TB
*10
—
*10
—
—
—
*10
—
"6.2 Backup (Advanced Copy)" (page
85).
21
ETERNUS DX90 S2
*9
240TB
4
512MB
512MB
1, 2
*11
1+0
"Table 4.3 RAID configurations that
38).
79).
"6.2.2 Remote Copy" (page
P3AM-4812-11ENZ0
"6.2.3