Cache Specifications - Hitachi AMS 2100 Hardware Manual

•
Works with switches that comply to
the following standards:
Cable Type

Cache specifications

The cache specifications are shown in
s
Capacity
(MB per controller)
Control method
Battery backup
Backup duration (h)
Capacity
(MB per controller)
Control method
Battery backup
Backup duration (h)
1.LRU = Least Recently Used. It is an algorithm where new items are placed at
the top of the cache and items at the bottom of the cache are discarded when
the cache grows past its size limit. Whenever an item is accessed, it is pulled
back to the top of the cache.
2.Backup time in hours with two full charged cache backup batteries.
Table A-5: Ethernet Specifications
Parameter
Table A-6: Cache Specifications
Item
2,048, 4,096
Read LRU / Write After
Provided
2
48 hrs when cache is 8,192 MB (4,096 MB per controller)
72 hrs when cache is 4,096 MB (2,048 MB per controller)
4,096, 8,192 MB
Read LRU / Write After
Provided
2
24 hrs when cache is 16,384 MB (8,192 MB per controller
36 hrs when cache is 8192 MB (4,096 MB per controller)
Specifications
Hitachi AMS 2100/2300 Storage System Hardware Guide
Specification
IEEE 802.1D STP
IEEE 802.1w RSTP
IEEE 802.3 CSMA/CD
IEEE 802.3u Fast Ethernet
IEEE 802.3z 1000BaseX
IEEE 802.1Q Virtual LANs
IEEE 802.3ad Dynamic LACP
RFC Channel 768 UDP
RFC Channel 783 TFTP
RFC Channel 791 IP
RFC Channel 793 TCP
RFC Channel 1157 SNMP v1
RFC Channel 1213 MIB II
RFC Channel 1757 RMON
RFC Channel 1901 SNMP v2
RJ-45 1000BASE-TX UTP or STP (STP is
recommended)
Table A-6.
Base Unit
AMS 2100
1
AMS 2300
1
A–4