ATTO Technology 4500R Uživatelský manuál Strana 65
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- Tabulka s obsahem
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Hodnocené. / 5. Na základě hodnocení zákazníků
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2. For performance and future rollback, system saves snapshot with
names in sequences. For example, three snapshots has been taken
and named “SnapVD-01”(first), “SnapVD-02” and “SnapVD-03”(last).
When deleting “SnapVD-02”, both of “SnapVD-02” and “SnapVD-03”
will be deleted because “SnapVD-03” is related to “SnapVD-02”.
3. For resource management, maximum number of snapshots in VD is 32.
4. If the snapshot space is full, system will send a warning message of
space full and the new taken snapshot will replace the oldest snapshot
in rotational sequence by executing auto snapshot, but new snapshot
can not be taken by manual because system does not know which
snapshot VDs can be deleted.
z No. of Snapshot: There are three constraints related to snapshot volume.
1. Up to 16 VD could be taken snapshot volume.
2. Each VD supports up to 32 snapshot volumes.
3. i8500 supports up to 256 logical volumes.
i8500 allows 256 VD/snapshot volume. It depends when the logical volumes (VD
number + snapshot config + snapshot number) reaches the max number of the
controller. In i8500, it is 256. We leave the flexibility to users, so users can have
their own RG/VD/Snapshot plan.
Let take 2 examples to describe it.
Example 1.
We assume user wants to create 32 snapshots for each VD. By all the
constraints, i8500 could support 7 VD to take 32 snapshots. The formula listed as
below:
256/(1+1+32) (VD itself+ Snapshot config+ 32 Snapshots)=7.52
Example 2.
We assume user want to have 16 VD with snapshot. By all the constraints, i8500
could support each VD to take 14 snapshots. The formula listed as below:
256/16=16 (Each VD could consumes 16 logical volumes, one is for VD itself and
one is for Snapshot config. There remains 14 logical volumes for snapshot).
4.4.2 Auto snapshot
The snapshot copies can be taken manually or by schedule such as hourly or
daily. Please follow the procedures.
1. There are two methods to set auto snapshot. In “/ Volume
configuration / Virtual disk”, mouse moves to the gray button next to
the VD number; click “Auto snapshot”. Or in “/ Volume
configuration / Snapshot”, click “
”.
2. The auto snapshot can be set monthly, weekly, daily, or hourly.
- Thecus i8500 1
- Preface 2
- Table of Contents 3
- -(Optional) .. 85 4
- 1.1 Features 5
- 1.2 Terminology 6
- 1.3 RAID levels 8
- Figure 1.4.1 9
- Chapter 2 Getting started 10
- Figure 2.2.1 11
- 2.3 Management methods 12
- 2.4 Enclosure 13
- 2.4.2 System buzzer 16
- 2.4.3 LED 16
- Chapter 3 Web GUI guideline 17
- 3.2 Login 18
- 3.3 Volume creation wizard 19
- 3.4 System configuration 20
- 3.4.2 IP address 21
- 3.4.3 Login setting 22
- 3.4.4 Mail setting 22
- 3.4.5 Notification setting 23
- Figure 3.4.5.1 24
- 3.5 iSCSI configuration 25
- 3.5.2 NIC 26
- 3.5.3 Node 27
- 3.5.4 Session 28
- 3.5.5 CHAP account 28
- 3.6 Volume configuration 29
- Figure 3.6.1.1 30
- 3.6.2 Physical disk 32
- Figure 3.6.2.3 33
- • PD column description: 33
- 3.6.3 RAID group 35
- Figure 3.6.3.2 36
- • RG column description: 36
- 3.6.4 Virtual disk 38
- Figure 3.6.4.2 39
- • VD column description: 39
- 3.6.5 Snapshot 42
- 3.6.6 Logical unit 44
- 3.6.7 Example 45
- Figure 3.6.7.1 46
- Figure 3.6.7.2 46
- Figure 3.6.7.5 48
- 3.7 Enclosure management 50
- 3.7.2 Hardware monitor 51
- Figure 3.7.3.1 52
- 3.7.4 UPS 53
- 3.8 System maintenance 54
- Figure 3.8.2.1 55
- Figure 3.8.2.2 55
- Figure 3.8.3.1 55
- 3.8.4 Import and export 56
- 3.8.5 Event log 56
- 3.9 Logout 57
- Chapter 4 Advanced operation 58
- 4.2 RG migration 60
- Figure 4.2.2 61
- Figure 4.2.3 61
- 4.3 VD Extension 62
- 4.4 Snapshot / Rollback 62
- 4.4.2 Auto snapshot 65
- 4.4.3 Rollback 66
- 4.5 Disk roaming 67
- Appendix 69
- Event notifications 71
- EMS events 72
- RMS events 72
- LVM3 events 72
- Snapshot events 74
- Battery backup events 74
- JBOD events 75
- System maintenance events 75
- C. Known issues 76
- D. Microsoft iSCSI Initiator 77
- Figure D.4 78
- Figure D.5 78
- Figure E.1: 79
- Figure E.2 80
- Figure E.3 80
- Figure E.4 81
- Figure E.5 81
- Figure E.6 81
- Figure E.7 82
- Figure E.8 82
- Figure F.1 83
- BBM inspect steps 85
- H■ M/B Diagram 86
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